1) Burgess Shale fossil
Found on
https://www.crosswordclues.com/clue/orthrozanclus
Orthrozanclus reburrus (`Dawn scythe with bristling hair`) is a sea creature known from the Middle Cambrian (~{Ma|505}) Burgess shale, about one centimeter long, with long spikes protruding from its armored body The describers of this fossil animal, Simon Conway Morris and Jean-Bernard Caron, say Orthrozanclus may have formed a link between the .....
Found on
http://en.wikipedia.org/wiki/Orthrozanclus
No exact match found.
