#orthozanclus

[newlabdakos]

Orthozanclus

(size: 6 to 11 mm / 0.24 to 0.43 "; temporal range: 505 mio. years ago)

[text from the Wikipedia article, see also link above]

Orthrozanclus (from Greek ὄρθρος + ζᾰ́γκλος (órthros + zánklos), "dawn scythe") is a genus of sea creatures known from two species, O. reburrus from the Middle Cambrian (~505 million years ago) Burgess shale and O. elongata from Early Cambrian (~518 million years ago) Maotianshan Shales. Animals in this genus were one to two centimeters long, with spikes protruding from their armored bodies. The placement of this genus into a specific family is not universally accepted.