Note: This historical image is not a factually accurate paleontological restoration.
Reason: According to Caron & Moysiuk 2021 (see File:Rsos210664f06.jpg for details), the "five subequal endites" of KUMIP 314089 represent gill blades, "shaft reagion" represent the whole frontal appendage.
You may ask further questions about the accuracy of this image at the image review page of Wikiproject Palaeontology on the English Wikipedia. Note that this image may be appropriate to illustrate obsolete paleontological views.
摘要
描述Hurdiid frontal appendages.webp
English: Fig. 3 Hurdiid frontal appendages bearing setae (only most prominent setae drawn). a and b Pahvantia hastata from the Wheeler Formation, Utah, USA, KUMIP 314089. c and d Aegirocassis benmoulae from the Fezouata Formation, Morocco, YPM 527123. Abbreviations: ds, dorsal spines; five en, five subequal endites on first five podomeres of distal articulated region; s, shaft; sen, shaft endite. Scale bars: a, b = 2 mm; c, d = 10 mm
Uploaded a work by Stephen Pates, Allison C. Daley & Nicholas J. Butterfield from https://link.springer.com/article/10.1186/s40851-019-0132-4 with UploadWizard