Ooedigera instance of fossil taxon
Etymology
The genus name Ooedigera derives from Ancient Greek ooedis "egg-shaped/oval" and geros "old". The species name peeli is in honour of Professor John S. Peel from the Geological Survey of Greenland, who especially researched the locality Ooedigera was discovered in.Taxonomy
The type specimen MGUH 29279 was discovered in the Early Cambrian Sirius Passet Lagerstätte of the North Greenlandic Buen Formation. The area corresponds to the early Cambrian Stage 3 about 519–516.5 million years ago. The specimen is a flat compression fossil preserved in fissile mudstone, with an odd, thin lamination, and several small splotches which represent the remains of various other creatures, such as sponges and trilobites.Ooedigera is classified in the extinct Cambrian subphylum Vetulicolia in the family Vetulicolidae along with Vetulicola. Ooedigera is the third vetulicolid found outside the Chinese Maotianshan Shales (the others are an undescribed specimen from Mural Formation, Canada and Nesonektris from Emu Bay Shale, Australia).
Vetulicolia is a subphylum of primitive Deuterostomia, a large group of animals whose first opening in fetal development becomes the anus as opposed to the mouth as in protostomes. The subphylum was originally classified in Arthropoda, but had been reassigned several times. It was suggested to represent primitive chordates or an invalid grouping of primitive tunicates. The subphylum was also suggested to be more closely related to protostomes, as an ecdysozoan (which includes arthropods, nematodes, and related taxa), specifically kinorhynchans (segmented worm-like creatures).
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