Figure 18. Other stalked animals from the Burgess Shale. A, Herpetogaster collinsi, primitive ambulacrarian (ROM 58037). B–D, Dinomischus isolatus, problematica. B, holotype (USNM 198735), C, paratype, showing a flatter base of the calyx (MCZ 1083), D, paratype showing long narrow stem and bracts pulled together at the top of the calyx (ROM 32573). E, Priscansermarinus barnetti, an enigmatic stalked animal with a thick stem (ROM 36064). F, Lyracystis radiata, a basal echinoderm with a long stem, cup shaped calyx (here surrounded by a halo of pyrite) and branchlets (ROM 57229). Scale bars: A–E = 5 mm, F = 30 mm. Abbreviations: Br - Bract, Bt - Branchlet, Ca - Calyx, Cp - Chitinous plate, Ph - Pharynx, Seg - Segment, St - Stem, Stom - Stomach, Ta - theca, Te - Tentacle, Td - Terminal disc.
<a rel="nofollow" class="external free" href="https://doi.org/10.1371/journal.pone.0029233.g018">https://doi.org/10.1371/journal.pone.0029233.g018</a>
Lorna J. O'Brien, Jean-Bernard Caron
CC BY 4.0
<a rel="nofollow" class="external free" href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0029233">https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0029233</a>