DOI: 10.5061/dryad.km109
title: Data from: The macro- and microfossil record of the middle Cambrian priapulid Ottoia

description: The stem-group priapulid Ottoia Walcott, 1911, is the most abundant worm
 in the mid-Cambrian Burgess Shale, but has not been unambiguously
 demonstrated elsewhere. High-resolution electron and optical microscopy of
 macroscopic Burgess Shale specimens reveals the detailed anatomy of its
 robust hooks, spines and pharyngeal teeth, establishing the presence of
 two species: Ottoia prolifica Walcott, 1911, and Ottoia tricuspida sp.
 nov. Direct comparison of these sclerotized elements with a suite of
 shale-hosted mid-to-late Cambrian microfossils extends the range of
 ottoiid priapulids throughout the middle to upper Cambrian strata of the
 Western Canada Sedimentary Basin. Ottoiid priapulids represented an
 important component of Cambrian ecosystems: they occur in a range of
 lithologies and thrived in shallow water as well as in the deep-water
 setting of the Burgess Shale. A wider survey of Burgess Shale macrofossils
 reveals specific characters that diagnose priapulid sclerites more
 generally, establishing the affinity of a wide range of Small Carbonaceous
 Fossils and demonstrating the prominent role of priapulids in Cambrian
 seas.
description: NMNH 196328 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida NMNH 196328 complete.tif, Ottoia
 tricuspida NMNH 196328 teeth.tif. Low-resolution thumbnails of the
 included files are available in the associated
 README.pdfROM 63057 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63057A (holotype) BSE
 coronal spines a.tif, Ottoia tricuspida ROM 63057A (holotype) BSE coronal
 spines b.tif, Ottoia tricuspida ROM 63057A (holotype) BSE coronal spines
 c.tif, Ottoia tricuspida ROM 63057A (holotype) BSE introvert hooks a.tif,
 Ottoia tricuspida ROM 63057A (holotype) BSE introvert hooks b.tif, Ottoia
 tricuspida ROM 63057A (holotype) BSE introvert hooks c.tif, Ottoia
 tricuspida ROM 63057A (holotype) BSE introvert hooks d.tif, Ottoia
 tricuspida ROM 63057A (holotype) BSE introvert hooks e.tif, Ottoia
 tricuspida ROM 63057A (holotype) BSE teeth a.tif, Ottoia tricuspida ROM
 63057A (holotype) BSE teeth b.tif, Ottoia tricuspida ROM 63057A (holotype)
 BSE teeth c.tif, Ottoia tricuspida ROM 63057A (holotype) complete
 nonpolarized.jpg, Ottoia tricuspida ROM 63057A (holotype) complete
 polarized.jpg, Ottoia tricuspida ROM 63057A (holotype) proboscis
 nonpolarized.jpg, Ottoia tricuspida ROM 63057A (holotype) proboscis
 polarized.jpg. Low-resolution thumbnails of the included files are
 available in the associated README.pdfROM 63058 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63058B coronal spines a -
 VPSE.tif Ottoia tricuspida ROM 63058B coronal spines b - VPSE.tif Ottoia
 tricuspida ROM 63058B coronal spines c - VPSE.tif Ottoia tricuspida ROM
 63058B introvert a - BSE.tif Ottoia tricuspida ROM 63058B introvert b -
 BSE.tif Ottoia tricuspida ROM 63058B introvert c - VPSE.tif Ottoia
 tricuspida ROM 63058B introvert d - VPSE.tif Ottoia tricuspida ROM 63058B
 introvert e - VPSE.tif Ottoia tricuspida ROM 63058B introvert f - VPSE.tif
 Ottoia tricuspida ROM 63058B Pharynx cross-section a - VPSE.tif Ottoia
 tricuspida ROM 63058B Pharynx cross-section b - VPSE.tif Ottoia tricuspida
 ROM 63058B Pharynx cross-section c - BSE.tif Ottoia tricuspida ROM 63058B
 proboscis hooks a - BSE.tif Ottoia tricuspida ROM 63058B proboscis hooks b
 - VPSE.tif Ottoia tricuspida ROM 63058B proboscis hooks c - VPSE.tif
 Ottoia tricuspida ROM 63058B proboscis hooks d - VPSE.tif Ottoia
 tricuspida ROM 63058B proboscis hooks e - VPSE.tif Ottoia tricuspida ROM
 63058B proboscis hooks f - VPSE.tif Ottoia tricuspida ROM 63058B proboscis
 hooks g - VPSE.tif Ottoia tricuspida ROM 63058B proboscis hooks h -
 VPSE.tif Ottoia tricuspida ROM 63058B proboscis hooks i - VPSE.tif Ottoia
 tricuspida ROM 63058B tail hooks a - BSE.tif Ottoia tricuspida ROM 63058B
 tail hooks b - BSE.tif Ottoia tricuspida ROM 63058B tail hooks c - BSE.tif
 Ottoia tricuspida ROM 63058B tail hooks d - VPSE.tif Ottoia tricuspida ROM
 63058B tail hooks e - VPSE.tif Ottoia tricuspida ROM 63058B tail hooks f -
 VPSE.tif Ottoia tricuspida ROM 63058B Type B teeth a - BSE.tif Ottoia
 tricuspida ROM 63058B Type B teeth b - BSE.tif Ottoia tricuspida ROM
 63058B Type B teeth c - BSE.tif Ottoia tricuspida ROM 63058B Type B-C
 teeth - BSE.tif Ottoia tricuspida ROM 63058B Type B-C teeth - VPSE.tif
 Ottoia tricuspida ROM 63058B Type C teeth a - BSE.tif Ottoia tricuspida
 ROM 63058B Type C teeth b - VPSE.tif Ottoia tricuspida ROM 63058B Type C
 teeth c - BSE.tif Ottoia tricuspida ROM 63058B Type C teeth d - BSE.tif
 Ottoia tricuspida ROM 63058B Type C teeth e - VPSE.tif Ottoia tricuspida
 ROM 63058B Type C teeth f - VPSE.tif Ottoia tricuspida ROM 63058B Type C
 teeth g - VPSE.tif Ottoia tricuspida ROM 63058B Type C teeth h - VPSE.tif
 Ottoia tricuspida ROM 63058B Type C teeth i - VPSE.tif Ottoia tricuspida
 ROM 63058B Type C teeth j - VPSE.tif Ottoia tricuspida ROM 63058B Type D
 teeth - VPSE 035.tif Ottoia tricuspida ROM 63058B Type D teeth - VPSE
 037.tif Low-resolution thumbnails of the included files are available in
 the associated README.pdfROM 63059 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63059 introvert hooks BSE
 a.tif Ottoia tricuspida ROM 63059 introvert hooks BSE b.tif Ottoia
 tricuspida ROM 63059 introvert hooks BSE c.tif Ottoia tricuspida ROM 63059
 introvert hooks BSE d.tif Ottoia tricuspida ROM 63059 introvert hooks BSE
 e.tif Ottoia tricuspida ROM 63059 introvert hooks BSE f.tif Ottoia
 tricuspida ROM 63059 introvert hooks VPSE a.tif Ottoia tricuspida ROM
 63059 introvert hooks VPSE b.tif Ottoia tricuspida ROM 63059 introvert
 VPSE.tif Ottoia tricuspida ROM 63059 nonpolarized.jpg Ottoia tricuspida
 ROM 63059 polarized.jpg Ottoia tricuspida ROM 63059 Type B teeth BSE
 4kV.tif Ottoia tricuspida ROM 63059 Type B teeth BSE 7kV.tif
 Low-resolution thumbnails of the included files are available in the
 associated README.pdfROM 63060 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63060 introvert nonpolarized
 a.JPG Ottoia tricuspida ROM 63060 introvert nonpolarized b.JPG Ottoia
 tricuspida ROM 63060 introvert polarized a.JPG Ottoia tricuspida ROM 63060
 introvert polarized b.JPG Ottoia tricuspida ROM 63060 Map - Narrow -
 Al.png Ottoia tricuspida ROM 63060 Map - Narrow - BSE.png Ottoia
 tricuspida ROM 63060 Map - Narrow - C.png Ottoia tricuspida ROM 63060 Map
 - Narrow - Ca.png Ottoia tricuspida ROM 63060 Map - Narrow - Fe.png Ottoia
 tricuspida ROM 63060 Map - Narrow - K.png Ottoia tricuspida ROM 63060 Map
 - Narrow - Mg.png Ottoia tricuspida ROM 63060 Map - Narrow - Na.png Ottoia
 tricuspida ROM 63060 Map - Narrow - O.png Ottoia tricuspida ROM 63060 Map
 - Narrow - P.png Ottoia tricuspida ROM 63060 Map - Narrow - S.png Ottoia
 tricuspida ROM 63060 Map - Narrow - Si.png Ottoia tricuspida ROM 63060 Map
 - Narrow - Sum spectrum.png Ottoia tricuspida ROM 63060 Map - Narrow -
 Ti.png Ottoia tricuspida ROM 63060 Map - Wide - Al.png Ottoia tricuspida
 ROM 63060 Map - Wide - BSE.png Ottoia tricuspida ROM 63060 Map - Wide -
 C.png Ottoia tricuspida ROM 63060 Map - Wide - Ca.png Ottoia tricuspida
 ROM 63060 Map - Wide - Cl.png Ottoia tricuspida ROM 63060 Map - Wide -
 F.png Ottoia tricuspida ROM 63060 Map - Wide - Fe.png Ottoia tricuspida
 ROM 63060 Map - Wide - K.png Ottoia tricuspida ROM 63060 Map - Wide -
 Mg.png Ottoia tricuspida ROM 63060 Map - Wide - Na.png Ottoia tricuspida
 ROM 63060 Map - Wide - O.png Ottoia tricuspida ROM 63060 Map - Wide -
 P.png Ottoia tricuspida ROM 63060 Map - Wide - S.png Ottoia tricuspida ROM
 63060 Map - Wide - Si.bmp Ottoia tricuspida ROM 63060 Map - Wide - Si.png
 Ottoia tricuspida ROM 63060 Map - Wide - Sum spectrum.png Ottoia
 tricuspida ROM 63060B introvert hooks BSE a.tif Ottoia tricuspida ROM
 63060B introvert hooks BSE b.tif Ottoia tricuspida ROM 63060B introvert
 hooks BSE c.tif Ottoia tricuspida ROM 63060B introvert hooks BSE d.tif
 Ottoia tricuspida ROM 63060B introvert hooks BSE e.tif Ottoia tricuspida
 ROM 63060B introvert hooks BSE f.tif Ottoia tricuspida ROM 63060B
 introvert hooks BSE g.tif Ottoia tricuspida ROM 63060B introvert hooks
 VPSE a.tif Ottoia tricuspida ROM 63060B introvert hooks VPSE b.tif Ottoia
 tricuspida ROM 63060B introvert hooks VPSE c.tif Ottoia tricuspida ROM
 63060B introvert hooks VPSE d.tif Ottoia tricuspida ROM 63060B Type A-B
 teeth BSE a.tif Ottoia tricuspida ROM 63060B Type A-B teeth BSE b.tif
 Ottoia tricuspida ROM 63060B Type A-B teeth BSE c.tif Ottoia tricuspida
 ROM 63060B Type A-B teeth BSE d.tif Ottoia tricuspida ROM 63060B Type A-B
 teeth BSE e.tif Ottoia tricuspida ROM 63060B Type A-B teeth BSE f.tif
 Ottoia tricuspida ROM 63060B Type A-B teeth VPSE a.tif Ottoia tricuspida
 ROM 63060B Type A-B teeth VPSE b.tif Ottoia tricuspida ROM 63060B Type B
 teeth BSE a.tif Ottoia tricuspida ROM 63060B Type B teeth BSE b.tif Ottoia
 tricuspida ROM 63060B Type B teeth BSE c.tif Ottoia tricuspida ROM 63060B
 Type B teeth BSE d.tif Ottoia tricuspida ROM 63060B Type B teeth BSE e.tif
 Ottoia tricuspida ROM 63060B Type B teeth BSE f.tif Ottoia tricuspida ROM
 63060B Type B teeth BSE g.tif Ottoia tricuspida ROM 63060B Type B teeth
 BSE h.tif Ottoia tricuspida ROM 63060B Type B teeth BSE
 i.tifROM 63061 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63061B coronal spines
 BSE.tif Ottoia tricuspida ROM 63061B coronal spines VPSE a.tif Ottoia
 tricuspida ROM 63061B coronal spines VPSE b.tif Ottoia tricuspida ROM
 63061B coronal spines VPSE c.tif Ottoia tricuspida ROM 63061B introvert
 spines VPSE.tif Ottoia tricuspida ROM 63061B introvert VPSE a.tif Ottoia
 tricuspida ROM 63061B introvert VPSE b.tif Ottoia tricuspida ROM 63061B
 introvert VPSE c.tif Ottoia tricuspida ROM 63061B introvert VPSE d.tif
 Ottoia tricuspida ROM 63061B introvert VPSE e.tif Ottoia tricuspida ROM
 63061B introvert VPSE f.tif Ottoia tricuspida ROM 63061B introvert VPSE
 g.tif Ottoia tricuspida ROM 63061B introvert VPSE h.tif Ottoia tricuspida
 ROM 63061B pharynx nonpolarized.JPG Ottoia tricuspida ROM 63061B pharynx
 polarized.JPG Ottoia tricuspida ROM 63061B Type A-B teeth BSE a.tif Ottoia
 tricuspida ROM 63061B Type A-B teeth BSE b.tif Ottoia tricuspida ROM
 63061B Type A-B teeth BSE c.tif Ottoia tricuspida ROM 63061B Type A-B
 teeth BSE d.tif Ottoia tricuspida ROM 63061B Type A-B teeth BSE e.tif
 Ottoia tricuspida ROM 63061B Type A-B teeth BSE f.tif Ottoia tricuspida
 ROM 63061B Type A-B teeth BSE g.tif Ottoia tricuspida ROM 63061B Type A-B
 teeth BSE h.tif Ottoia tricuspida ROM 63061B Type A-B teeth BSE i.tif
 Ottoia tricuspida ROM 63061B Type A-B teeth BSE j.tif Ottoia tricuspida
 ROM 63061B Type A-B teeth BSE k.tif Ottoia tricuspida ROM 63061B Type A-B
 teeth BSE l.tif Ottoia tricuspida ROM 63061B Type A-B teeth VPSE a.tif
 Ottoia tricuspida ROM 63061B Type A-B teeth VPSE b.tif Ottoia tricuspida
 ROM 63061B Type A-B teeth VPSE c.tif Ottoia tricuspida ROM 63061B Type A-B
 teeth VPSE d.tif Ottoia tricuspida ROM 63061B Type B teeth BSE a.tif
 Ottoia tricuspida ROM 63061B Type B teeth BSE b.tif Ottoia tricuspida ROM
 63061B Type B teeth BSE c.tif Ottoia tricuspida ROM 63061B Type B teeth
 BSE d.tif Ottoia tricuspida ROM 63061B Type B teeth BSE e.tif Ottoia
 tricuspida ROM 63061B Type B teeth BSE f.tif Ottoia tricuspida ROM 63061B
 Type D teeth VPSE a.tif Ottoia tricuspida ROM 63061B Type D teeth VPSE
 b.tif Ottoia tricuspida ROM 63061B Type D teeth VPSE c.tif Ottoia
 tricuspida ROM 63061B Type D teeth VPSE d.tif Low-resolution thumbnails of
 the included files are available in the associated
 README.pdfROM 63063 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63063 map - Al.png Ottoia
 tricuspida ROM 63063 map - BSE.png Ottoia tricuspida ROM 63063 map - C.png
 Ottoia tricuspida ROM 63063 map - Ca.png Ottoia tricuspida ROM 63063 map -
 Fe.png Ottoia tricuspida ROM 63063 map - K.png Ottoia tricuspida ROM 63063
 map - Mg.png Ottoia tricuspida ROM 63063 map - Na.png Ottoia tricuspida
 ROM 63063 map - O.png Ottoia tricuspida ROM 63063 map - P.png Ottoia
 tricuspida ROM 63063 map - S.png Ottoia tricuspida ROM 63063 map - Si.png
 Ottoia tricuspida ROM 63063 map - Sum spectrum to 10kV.png Ottoia
 tricuspida ROM 63063 map - Sum spectrum to 20kV.png Ottoia tricuspida ROM
 63063 map - Ti.png Ottoia tricuspida ROM 63063 Maps.psd.zip Low-resolution
 thumbnails of the included files are available in the associated
 README.pdfROM 63064 - Ottoia
 tricuspidaOttoia tricuspida from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia tricuspida ROM 63064 Type B teeth x130 BSE
 a.tif Ottoia tricuspida ROM 63064 Type B teeth x130 BSE b.tif Ottoia
 tricuspida ROM 63064 Type B teeth x130 BSE c.tif Ottoia tricuspida ROM
 63064 Type B teeth x40 BSE a.tif Ottoia tricuspida ROM 63064 Type B teeth
 x40 BSE b.tif Ottoia tricuspida ROM 63064 Type B teeth x40 BSE c.tif
 Ottoia tricuspida ROM 63064 Type B teeth x40 BSE d.tif Low-resolution
 thumbnails of the included files are available in the associated
 README.pdfNMNH 57619 - Ottoia
 prolifica lectotypeOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica lectotype introvert NMNH 57619
 4x.tif Ottoia prolifica lectotype NMNH 57619 1x.tif Ottoia prolifica
 lectotype NMNH 57619 3x.tif Ottoia prolifica lectotype proboscis NMNH
 57619 3x.tif Low-resolution thumbnails of the included files are available
 in the associated README.pdfNMNH 57622 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 57622 x1.tif Ottoia
 prolifica NMNH 57622 x3.6.tif Low-resolution thumbnails of the included
 files are available in the associated README.pdfNMNH 172926 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 172926 x1.1.tif Ottoia
 prolifica NMNH 172926 x1.jpeg Ottoia prolifica NMNH 172926 x2.tif
 Low-resolution thumbnails of the included files are available in the
 associated README.pdfNMNH 172983 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica 172983 x1.tif Ottoia prolifica
 172983 x2.jpg Ottoia prolifica NMNH 172983 introvert hooks.jpg Ottoia
 prolifica NMNH 172983 SE 01.tif Ottoia prolifica NMNH 172983 SE 02.tif
 Ottoia prolifica NMNH 172983 SE 03.tif Ottoia prolifica NMNH 172983 SE
 04.tif Ottoia prolifica NMNH 172983 SE 05.tif Ottoia prolifica NMNH 172983
 SE 06.tif Ottoia prolifica NMNH 172983 SE 07.tif Ottoia prolifica NMNH
 172983 SE 08.tif Ottoia prolifica NMNH 172983 SE 09.tif Ottoia prolifica
 NMNH 172983 SE 10.tif Ottoia prolifica NMNH 172983 SE 11.tif Ottoia
 prolifica NMNH 172983 SE 12.tif Ottoia prolifica NMNH 172983 SE 13.tif
 Ottoia prolifica NMNH 172983 SE 14.tif Low-resolution thumbnails of the
 included files are available in the associated
 README.pdfNMNH 172984 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 172984 introvert BSE.tif
 Ottoia prolifica NMNH 172984 pharynx BSE Type B.tif Ottoia prolifica NMNH
 172984 pharynx BSE Type C-D.tif Ottoia prolifica NMNH 172984 pharynx
 VPSE.tif Ottoia prolifica NMNH 172984 teeth x10 a.jpeg Ottoia prolifica
 NMNH 172984 teeth x10 b.jpeg Ottoia prolifica NMNH 172984 teeth x10 c.tiff
 Ottoia prolifica NMNH 172984 teeth x10 d.tiff Ottoia prolifica NMNH 172984
 teeth x10 e.tiff Ottoia prolifica NMNH 172984 teeth x10 f.tiff Ottoia
 prolifica NMNH 172984 teeth x10 g.jpeg Ottoia prolifica NMNH 172984 teeth
 x10 h.tiff Ottoia prolifica NMNH 172984 teeth x10 i.tiff Ottoia prolifica
 NMNH 172984 Type B teeth BSE.tif Ottoia prolifica NMNH 172984 x1
 nonpolarized.jpeg Ottoia prolifica NMNH 172984 x1 polarized.jpeg Ottoia
 prolifica NMNH 172984 x2 0572.jpeg Ottoia prolifica NMNH 172984 x5 c.jpeg
 Ottoia prolifica NMNH 172984 x5a.jpeg Ottoia prolifica NMNH 172984
 x5b.tiff Low-resolution thumbnails of the included files are available in
 the associated README.pdfNMNH 188594 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 188594 Introvert hooks VPSE
 a.tif Ottoia prolifica NMNH 188594 Introvert hooks VPSE b.tif Ottoia
 prolifica NMNH 188594 nonpolarized 3 mm.tiff Ottoia prolifica NMNH 188594
 pharynx nonpolarized 1 mm a.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 1 mm b.jpeg Ottoia prolifica NMNH 188594 pharynx nonpolarized
 1 mm c.jpeg Ottoia prolifica NMNH 188594 pharynx nonpolarized 1 mm d.jpeg
 Ottoia prolifica NMNH 188594 pharynx nonpolarized 2 mm a.jpeg Ottoia
 prolifica NMNH 188594 pharynx nonpolarized 2 mm b.tiff Ottoia prolifica
 NMNH 188594 pharynx nonpolarized 2 mm c.tiff Ottoia prolifica NMNH 188594
 pharynx nonpolarized 2 mm d.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 200 æm a.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 200 æm b.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 200 æm c.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 200 æm d.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 200 æm e.jpeg Ottoia prolifica NMNH 188594 pharynx
 nonpolarized 400 æm.jpeg Ottoia prolifica NMNH 188594 pharynx nonpolarized
 500 æm a.jpeg Ottoia prolifica NMNH 188594 pharynx nonpolarized 500 æm
 b.jpeg Ottoia prolifica NMNH 188594 pharynx nonpolarized 500 æm c.tiff
 Ottoia prolifica NMNH 188594 pharynx nonpolarized 500 æm d.jpeg Ottoia
 prolifica NMNH 188594 pharynx nonpolarized 500 æm e.jpeg Ottoia prolifica
 NMNH 188594 pharynx nonpolarized 500 æm f.jpeg Ottoia prolifica NMNH
 188594 polarized 5 mm.jpeg Ottoia prolifica NMNH 188594 Type A teeth BSE
 x30 a.tif Ottoia prolifica NMNH 188594 Type A teeth BSE x30 b.tif Ottoia
 prolifica NMNH 188594 Type B teeth BSE x117.tif Ottoia prolifica NMNH
 188594 Type B teeth BSE x30 a.tif Ottoia prolifica NMNH 188594 Type B
 teeth BSE x30 b.tif Ottoia prolifica NMNH 188594 Type B teeth BSE x30
 c.tif Ottoia prolifica NMNH 188594 Type B teeth BSE x30 d.tif Ottoia
 prolifica NMNH 188594 Type B teeth BSE x30 e.tif Ottoia prolifica NMNH
 188594 Type B teeth BSE x30 f.tif Ottoia prolifica NMNH 188594 Type B
 teeth BSE x45 a.tif Low-resolution thumbnails of the included files are
 available in the associated README.pdfNMNH 188609 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 188609 introvert a.jpeg
 Ottoia prolifica NMNH 188609 introvert b.jpeg Ottoia prolifica NMNH 188609
 introvert c.jpeg Ottoia prolifica NMNH 188609 introvert hooks a.jpeg
 Ottoia prolifica NMNH 188609 introvert hooks b.jpeg Ottoia prolifica NMNH
 188609 introvert hooks c.jpeg Ottoia prolifica NMNH 188609 Type B-C teeth
 a.jpeg Ottoia prolifica NMNH 188609 Type B-C teeth b.jpeg Ottoia prolifica
 NMNH 188609 Type B-C teeth c.jpeg Low-resolution thumbnails of the
 included files are available in the associated
 README.pdfNMNH 196327 - Ottoia
 spComplete Ottoia specimen
 from the Upper Walcott Quarry showing distribution of tail
 hooksNMNH 198578 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica 198578 pharynx.jpg Ottoia
 prolifica 198578 Type A-B teeth a.jpg Ottoia prolifica 198578 Type A-B
 teeth b.jpg Ottoia prolifica 198578 Type B-C teeth a.jpg Ottoia prolifica
 198578 Type B-C teeth b.jpg Ottoia prolifica 198578 Type C teeth a.jpg
 Ottoia prolifica 198578 Type C teeth b.jpg Ottoia prolifica 198578 Type C
 teeth c.tif Ottoia prolifica 198578 Type C teeth d.jpg Ottoia prolifica
 198578 Type C teeth e.jpg Ottoia prolifica 198578 Type C teeth f.jpg
 Ottoia prolifica 198578 Type C teeth g.jpg Ottoia prolifica 198578 Type C
 teeth h.jpg Ottoia prolifica 198578 Type C-D teeth a.jpg Ottoia prolifica
 198578 Type C-D teeth b.jpg Ottoia prolifica 198578 Type D teeth a.jpg
 Ottoia prolifica 198578 Type D teeth b.jpg Ottoia prolifica 198578 Type D
 teeth c.jpg Ottoia prolifica 198578 Type D teeth d.jpg Ottoia prolifica
 198578 Type D teeth e.jpg Ottoia prolifica 198578 Type D teeth f.jpg
 Ottoia prolifica 198578 Type D teeth g.jpg Ottoia prolifica 198578 Type D
 teeth h.jpg Ottoia prolifica 198578 Type D teeth i.jpg Ottoia prolifica
 198578 Type D teeth j.jpg Ottoia prolifica 198578 Type D teeth k.jpg
 Ottoia prolifica 198578 Type D teeth l.jpg Ottoia prolifica 198579 Type
 A-B teeth a.jpg Ottoia prolifica NMNH 198578 complete .jpg Low-resolution
 thumbnails of the included files are available in the associated
 README.pdfNMNH 198591 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica 198591 introvert nonpolarized
 a.jpg Ottoia prolifica 198591 introvert nonpolarized b.jpg Ottoia
 prolifica 198591 introvert polarized a.tif Ottoia prolifica 198591
 introvert polarized b.jpg Ottoia prolifica 198591 Type A-B teeth a.jpg
 Ottoia prolifica 198591 Type A-B teeth b.jpg Ottoia prolifica 198591 Type
 A-B teeth c.jpg Ottoia prolifica 198591 Type A-B teeth d.jpg Ottoia
 prolifica 198591 Type A-B teeth e.tif Ottoia prolifica 198591 Type A-B
 teeth f.jpg Ottoia prolifica 198591 Type A-B teeth g.jpg Ottoia prolifica
 198591 Type A-B teeth h.jpg Low-resolution thumbnails of the included
 files are available in the associated README.pdfNMNH 198759 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 198759 pharynx.tif Ottoia
 prolifica NMNH 198759 Type A-B teeth a.jpg Ottoia prolifica NMNH 198759
 Type A-B teeth b.tif Ottoia prolifica NMNH 198759 Type A-B teeth c.jpg
 Ottoia prolifica NMNH 198759 type A-C teeth.tif Ottoia prolifica NMNH
 198759 Type B-C teeth.jpg Ottoia prolifica NMNH 198759 Type B-D teeth
 a.jpg Ottoia prolifica NMNH 198759 Type B-D teeth b.jpg Ottoia prolifica
 NMNH 198759 Type D teeth a.jpg Ottoia prolifica NMNH 198759 Type D teeth
 b.jpg Ottoia prolifica NMNH 198759 Type D teeth c.jpg Ottoia prolifica
 NMNH 198759 Type D teeth d.jpg Low-resolution thumbnails of the included
 files are available in the associated README.pdfNMNH 198818 - Ottoia
 prolificaOttoia prolifica from
 the Upper Walcott Quarry. Zipped archive containing the following
 high-resolution images: Ottoia prolifica NMNH 198818 introvert a.tif
 Ottoia prolifica NMNH 198818 introvert b.tif Ottoia prolifica NMNH 198818
 introvert hooks a.jpg Ottoia prolifica NMNH 198818 introvert hooks b.jpg
 Ottoia prolifica NMNH 198818 introvert hooks c.jpg Ottoia prolifica NMNH
 198818 introvert hooks d.jpg Ottoia prolifica NMNH 198818 Type B teeth
 a.jpg Ottoia prolifica NMNH 198818 Type B teeth b.jpg Ottoia prolifica
 NMNH 198818 Type B teeth c.jpg Low-resolution thumbnails of the included
 files are available in the associated README.pdfNMNH 199107 - Ottoia
 prolificaOttoia prolifica NMNH
 199107 from the Upper Walcott Quarry - optical micrograph of
 proboscisNMNH 83941a - Selkirkia
 columbiaSelkirkia columbia from
 the Walcott Quarry. Zipped archive containing the following
 high-resolution images: Selkirkia columbia NMNH 83941a nonpolarized a.tif
 Selkirkia columbia NMNH 83941a nonpolarized b.tif Selkirkia columbia NMNH
 83941a nonpolarized c.tif Selkirkia columbia NMNH 83941a nonpolarized
 d.tif Selkirkia columbia NMNH 83941a nonpolarized e.tif Selkirkia columbia
 NMNH 83941a nonpolarized f.tif Selkirkia columbia NMNH 83941a nonpolarized
 g.tif Selkirkia columbia NMNH 83941a VPSE a.tif Selkirkia columbia NMNH
 83941a VPSE b.tif Selkirkia columbia NMNH 83941a VPSE c.tif Selkirkia
 columbia NMNH 83941a VPSE d.tif Selkirkia columbia NMNH 83941a VPSE e.tif
 Selkirkia columbia NMNH 83941a.tif Low-resolution thumbnails of the
 included files are available in the associated
 README.pdfNMNH 198626 - Selkirkia
 columbiaSelkirkia columbia from
 the Walcott Quarry. Zipped archive containing the following
 high-resolution images: Selkirkia columbia NMNH 198626 polarized.jpg
 Selkirkia columbia NMNH 198626 unpolarized close.jpg Selkirkia columbia
 NMNH 198626 unpolarized.jpg Low-resolution thumbnails of the included
 files are available in the associated README.pdfROM 63130 - Selkirkia
 columbiaSelkirkia columbia from
 the Walcott Quarry. Zipped archive containing the following
 high-resolution image: Selkirkia columbia ROM 63130 VPSE.tif A
 low-resolution thumbnail of the included file is available in the
 associated README.pdfROM 63131 - Selkirkia
 columbiaSelkirkia columbia from
 the Walcott Quarry. Zipped archive containing the following
 high-resolution images: Selkirkia columbia ROM 63131A dry, polarized,
 bright field.JPG Selkirkia columbia ROM 63131A dry, polarized, dark
 field.JPG Selkirkia columbia ROM 63131A dry, polarized.JPG Selkirkia
 columbia ROM 63131A dry, unpolarized.JPG Selkirkia columbia ROM 63131A SEM
 a.tif Selkirkia columbia ROM 63131A SEM b.tif Selkirkia columbia ROM
 63131A SEM c.tif Selkirkia columbia ROM 63131A SEM.tif Selkirkia columbia
 ROM 63131B wet, polarized, dark field.JPG Low-resolution thumbnails of the
 included files are available in the associated
 README.pdfNMNH 198644 - Louisella
 pedunculataLouisella pedunculata
 from the Walcott Quarry. SEM images of entire proboscis. Zipped archive
 containing the following high-resolution images: Louisella pedunculata
 NMNH 198644a_371.tif Louisella pedunculata NMNH 198644a_372.tif Louisella
 pedunculata NMNH 198644a_373.tif Louisella pedunculata NMNH
 198644a_374.tif Louisella pedunculata NMNH 198644a_375.tif Louisella
 pedunculata NMNH 198644a_376.tif Louisella pedunculata NMNH
 198644a_377.tif Louisella pedunculata NMNH 198644a_378.tif Louisella
 pedunculata NMNH 198644a_379.tif Louisella pedunculata NMNH
 198644a_380.tif Louisella pedunculata NMNH 198644a_381.tif Louisella
 pedunculata NMNH 198644a_382.tif Louisella pedunculata NMNH
 198644a_383.tif Louisella pedunculata NMNH 198644a_384.tif Louisella
 pedunculata NMNH 198644a_385.tif Louisella pedunculata NMNH
 198644a_386.tif Louisella pedunculata NMNH 198644a_387.tif Louisella
 pedunculata NMNH 198644a_388.g.tif Louisella pedunculata NMNH
 198644a_388.tif Louisella pedunculata NMNH 198644a_389.tif Louisella
 pedunculata NMNH 198644a_390.tif Louisella pedunculata NMNH
 198644a_391.tif Louisella pedunculata NMNH 198644a_392.tif Louisella
 pedunculata NMNH 198644a_393.tif Louisella pedunculata NMNH
 198644a_394.tif Louisella pedunculata NMNH 198644a_395.tif Louisella
 pedunculata NMNH 198644a_396.g.tif Louisella pedunculata NMNH
 198644a_396.tif Louisella pedunculata NMNH 198644a_397.tif Louisella
 pedunculata NMNH 198644a_398.tif Louisella pedunculata NMNH
 198644b_399.tif Louisella pedunculata NMNH 198644b_400.tif Louisella
 pedunculata NMNH 198644b_401.tif Louisella pedunculata NMNH
 198644b_402.tif Louisella pedunculata NMNH 198644b_403.tif Louisella
 pedunculata NMNH 198644b_404.tif Louisella pedunculata NMNH
 198644b_405.tif Louisella pedunculata NMNH 198644b_406.tif Louisella
 pedunculata NMNH 198644b_407.tif Louisella pedunculata NMNH
 198644b_408.tif Louisella pedunculata NMNH 198644b_409.tif Louisella
 pedunculata NMNH 198644b_410.tif Louisella pedunculata NMNH
 198644b_411.tif Low-resolution thumbnails of the included files are
 available in the associated README.pdfNMNH 198645 - Louisella
 pedunculataLouisella pedunculata
 from the Walcott Quarry. SEM images of entire proboscis. Zipped archive
 containing the following high-resolution images: Louisella pedunculata
 NMNH 198645a_422.tif Louisella pedunculata NMNH 198645a_423.tif Louisella
 pedunculata NMNH 198645a_424.tif Louisella pedunculata NMNH
 198645a_425.tif Louisella pedunculata NMNH 198645a_426.tif Louisella
 pedunculata NMNH 198645a_427.g.tif Louisella pedunculata NMNH
 198645a_427.tif Louisella pedunculata NMNH 198645a_428.tif Louisella
 pedunculata NMNH 198645b_412.tif Louisella pedunculata NMNH
 198645b_413.tif Louisella pedunculata NMNH 198645b_414.g.tif Louisella
 pedunculata NMNH 198645b_414.tif Louisella pedunculata NMNH
 198645b_415.tif Louisella pedunculata NMNH 198645b_416.tif Louisella
 pedunculata NMNH 198645b_417.tif Louisella pedunculata NMNH
 198645b_418.tif Louisella pedunculata NMNH 198645b_419.tif Louisella
 pedunculata NMNH 198645b_420.tif Louisella pedunculata NMNH
 198645b_421.tif Low-resolution thumbnails of the included files are
 available in the associated README.pdfFieldia
 lanceolataFieldia lanceolata from
 the Walcott Quarry. Zipped archive containing the following
 high-resolution images: Fieldia lanceolata ROM 63137B nonpolarized.JPG
 Fieldia lanceolata ROM 63137B polarized.JPG Fieldia lanceolata ROM 63137B
 scale.JPG Fieldia lanceolata ROM 63138A nonpolarized.JPG Fieldia
 lanceolata ROM 63138A polarized.JPG Fieldia lanceolata ROM 63138A
 scale.JPG Fieldia lanceolata NMNH 198599 BSE.tif Fieldia lanceolata NMNH
 198600 BSE.tif Fieldia lanceolata NMNH 198601 BSE.tif Fieldia lanceolata
 NMNH 198601 VPSE.tif Fieldia lanceolata NMNH 198604 BSE a.tif Fieldia
 lanceolata NMNH 198604 BSE b.tif Fieldia lanceolata NMNH 198604 BSE c.tif
 Fieldia lanceolata NMNH 198604 polarized.jpeg Fieldia lanceolata NMNH
 198615A BSE a.tif Fieldia lanceolata NMNH 198615A BSE b.tif Fieldia
 lanceolata NMNH 198615A BSE c.tif Fieldia lanceolata NMNH 198615A VPSE.tif
 Fieldia lanceolata NMNH 198695b BSE.tif Fieldia lanceolata NMNH 83939c
 nonpolarized.tiff Fieldia lanceolata NMNH 83939c part-polarized.tiff
 Fieldia lanceolata NMNH 83939c polarized.tiff Low-resolution thumbnails of
 the included files are available in the associated
 README.pdfAncalagon
 minorAncalagon minor from the
 Walcott Quarry. Zipped archive containing the following high-resolution
 images: Ancalagon minor NMNH 188622 anterior BSE.tif Ancalagon minor NMNH
 188622 anterior VPSE.tif Ancalagon minor NMNH 198609 anterior VPSE.tif
 Ancalagon minor NMNH 198610a anterior tip VPSE.tif Ancalagon minor NMNH
 198610a anterior VPSE.tif Ancalagon minor NMNH 198610a lateral VPSE.tif
 Ancalagon minor NMNH 57646 (holotype) anterior a.tif Ancalagon minor NMNH
 57646 (holotype) anterior b.tif Ancalagon minor NMNH 57646 (holotype)
 complete.tif Ancalagon minor NMNH 57646 (holotype) posterior.tif
 Low-resolution thumbnails of the included files are available in the
 associated README.pdfNMNH 198579 - Ottoia
 prolificaOptical micrograph of
 Ottoia prolifica NMNH 198579, showing Type A–B teeth. Low-resolution
 preview available in the associated README.pdf.Ottoia prolifica - SEMs
 of Small Carbonaceous FossilsOttoia prolifica from
 the Lower Walcott Quarry. Zipped archive containing the following
 high-resolution images: Hook.png Introvert hook - lateral.png Scalid.png
 Tail hook.png Type B tooth - inner_a.png Type B tooth - inner_b.png Type B
 tooth - inner_c.png Type B tooth - inner_d.png Type B tooth - inner_e.png
 Type B tooth - outer_a.png Type B tooth - outer_b.png Type D tooth.png
 Low-resolution thumbnails of the included files are available in the
 associated README.pdfOttoia prolifica - SCF
 SEMs.zipSelkirkia - SEMs of
 Small Carbonaceous FossilsSmall Carbonaceous
 Fossils from the Pika Formation assigned to Selkirkia. Zipped archive
 containing the following high-resolution images: Selkirkia - Type A
 tooth.tif Selkirkia - Type B tooth_a.tif Selkirkia - Type B tooth_b.tif
 Selkirkia - Type B tooth_c.tif Low-resolution thumbnails of the included
 files are available in the associated README.pdfSelkirkia - SCF
 SEMs.zip