Facts about Yohoia, an extinct prehistoric animal

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Dinosaur Jungle   >   Other Prehistoric Animals   >   Yohoia



Scientific Classification
  Kingdom Animalia
  Superphylum Ecdysozoa
  (unranked) Panarthropoda
  Phylum Arthropoda
  (unranked) Arachnomorpha
  Family Yohoiiidae
  Genus Yohoia
Yohoia is a small animal that lived during the Cambrian period. Its fossils were found in the Burgess Shale in the Canadian Rockies in British Columbia, Canada.

Yohoia was about ¼ inch to just under 1 inch (0.7 to 2.3 centimeters) long. It is believed to have been a bottom dweller, was an Arthropod, and is placed in the Arachnomorph group with Arthropoda (Arachnomorpha includes the Chelicerates such as horseshoe crab, spiders and scorpions, as well as the Trilobites).

Yohoia had a head-shield with two large jointed appendages, each ending in 4 long spines, as well as 3 pairs of downward hanging appendages which may have supported the creature on the sea-bottom. To the rear of the head-shield were 13 plated segments ("tergites"). The first 10 tergites each had backward facing projections, and the last 3 completed encircled the body, beneath the body were additional appendages which may have been used for swimming and/or respiration. At the end of the body was a paddle-like tail.

Yohoia Timeline:

Yohoia was a strange marine animal that lived during the Cambrian period

Yohoia was a strange marine animal that lived during the Cambrian period

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