Appendix 1 in Crayfishes from the Jehol biota

Appendix 1. — Continuation.
Description Observed on specimensCephalothoracic Epistomeplaced between the insertion of antenna NIGP-DYH-3, NIGP-Shen-4, NIGP-sternitesand oral area, thick, comprising anShen-14, NIGP-Shen-16, NIGP-arched main part and a subpentagonalShen-19, NIGP-Shen-22-23,cephalic lobe (anterior), dorsal sideNIGP-Shen-38, NIGP-(toward body cavity) of main partShen-40, NIGP-Shen-71, NIGP-with many holes, a ventral side ofShen-RT145, NIGPAS-126337,main part with a large median pit andNIGPAS-126342-126343, sp5, sp7-10,a tuberculated carina on each side,sp25, Tohoku-U-57254extending from the median pit to thelateral margin, subpentagonal cephaliclobe wide (about 30% of epistomewidth); forming three spines (onepointing forward and two pointingfoward and slightly outward), anteriormargin slightly oblique, lateral marginspoorly preserved and posterior margin(zygomal arch) slightly concaveTh4-8 sternitesnot visible between thoracopods 4 NIGP-Shen-4, NIGP-Shen-14, NIGP-(P1), wider posteriorly, each sterniteshen-71, NIGPAS-126342, sp2,separated from other by a groovesp10, sp14, sp23, sp30, sp31,Tohoku-U-57254Annuluspossibly on th7-8 (P4-5) sternites: NIGP-Shen-16?, NIGPAS-Shen-38,ventralisappears in the fossil as an inverted Y,NIGPAS-Shen-66?, NIGPAS-126342possibly where the sternite is foldedPleonProportionsLenghtcephalothorax about 1.3 longer than pleon All specimens except NIGP-Shen-5,Width Heightcephalothorax about 1.4 wider than pleon; Pleon about 1.4 times longer than wide pleon about 2 times longer than high6, 11, 20, 26, 29, 53, 55, 67, GM1, NIGPAS-126338-126339, 126341- 126344, 126346-126347, RT141, sp3- 4, 6, sp12-14, 15-19, 21-22, 28, 29,Tohoku-U-57267, Tohoku-U-57272