This paleontological restoration is inaccurate, or its accuracy is disputed.
Reason: Non Peer-reviewed interpretation: antennae, setation, annulation (in H. sparsa) and tuberculation are original research (see Wikipedia:No original research).
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.