DOI: 10.5281/zenodo.15135544
title: Appendix 1 in Crayfishes from the Jehol biota

description: Appendix 1. — Continuation.
Description Observed on specimensGroovesBranchiocardiacextending from the cervical groove, NIGP-DYH-5-6, NIGP-Shen-1, NIGP-(a)subparallel to median lineShen-3, NIGP-Shen-5-6, NIGP-Shen-11, NIGP-Shen-15, NIGP-Shen-17, NIGP- Shen-32-33, NIGP-Shen-39-40, NIGP-Shen-51, NIGP-Shen-53, NIGP-Shen-58, NIGP-Shen-62, NIGPAS-126338, NIGPAS-126344, NIGPAS-126347, NIGPAS-126353, NIGPAS-126366, NIGP-Shen-a, NIGP- Shen-b-c, NIGP-Shen-GM1, sp3, sp8, sp15-17, sp20, sp22, sp24, sp27, Tohoku-U-57254, Tohoku-U-57272Antennal (b)oblique, forming an angle of around 40° compared to dorsal median line, joined posteriorly to the cervical grooveHepatic (b1)not visible / not presentPostcervical (c)not visible / not presentCardiac (ca)extending from the branchiocardiac groove, parallel to the cervical groove, fading just before reaching median lineGastro-orbital (d)extending anteriorly from the mid-heightof the cervical groove, covering halft thedistance toward the anterior marginCervical (e1e)deep, curved, crossing median line aroundthe mid-lenght of shield in medium tolarge specimens, slightly behind the mid-length of the shield in small specimens (=cephalic region proportionally bigger insmall specimens than in larger ones)Spines andSubdorsalparallel to median line, ending in the NIGP-Shen-1, NIGP-Shen-3,carinaespine of the proximal part of rostrum,NIGPAS-126346, NIGPAS-126347,anteriorly, ending posteriorly a shortNIGP-Shen-GM1, Tohoku-U-57272distance posterior to the level of ocularincisionPostorbitalpaired, dorsal part very close to thesubdorsal carina, formed of two spineseach continued posteriorly by a shortcarina fading posteriorly; ventral partformed of at least four spines forminga slightly sinuous line (second spineplaced a little higher than the threeothers) posterior to the ocular incisionPostrostralover median line, with at least four spines, NIGPAS-Shen-68,located posterior to the rostrum, on theNIGPAS-126346-126347, NIGP-anterior half of cephalic regionShen-GM1, sp2, sp19OrnamentationCephalic areafine granulation NIGP-Shen-1-3, NIGP-Shen-5, NIGP-Branchial areafine granulationShen-11, NIGP-Shen-19, NIGP- Shen-32-33, NIGP-Shen-35, NIGP-Above branchial areafine granulation, slightly coarser than elsewhereShen-39, NIGP-Shen-52, NIGP- Shen-58, NIGP-Shen-62, NIGP-Shen-68, NIGP-Shen-a, NIGP-Shen-GM1, NIGP-Shen-RT132,NIGPAS-126339, NIGPAS-126347,NIGPAS-126366, sp2, sp4, sp8, sp11,sp20, sp23, Tohoku-U-57272Gastrolithscircular in outline, relatively flat, one NIGP-Shen-2-4, NIGP-Shen-12-13,side convex and rounded, other sideNIGP-Shen-19, NIGP-Shen-26, NIGP-with a thick rim and a depression inShen-32-34, NIGP-Shen-38, NIGP-the middle, generally massive, someShen-52, NIGP-Shen-54, NIGP-Shen-a,smaller, probably depending on theNIGPAS-126338, NIGPAS-126346,growth stageNIGPAS-126353, NIGPAS-126366,sp18
description: Published as part of Audo, Denis, Kawai, Tadashi, Letenneur, Charlène & Huang, Diying, 2023, Crayfishes from the Jehol biota, pp. 711 in Geodiversitas 45 (24) on page 711, DOI: 10.5252/geodiversitas2023v45a24, http://zenodo.org/record/10376394