-40%
Fossil Echinoid Sea Urchin, "Mepygurus depressus" Lit de la Lomaka, Madagascar.
$ 13.2
- Description
- Size Guide
Description
Echinoid Sea Urchin Callovian age, Middle Jurassic Lit de la Lomaka, MadagascarThis type of Sea Urchin, "Mepygurus depressus", like a (sand dollar), is an extremely flat form of echinoid. They are a slow moving creature, feeding primarily upon algae, as they burrow through the soft sand in our oceans. Sea Urchins have a rigid skeletal system, known as a test, which is comprised of several interlocking plates. On the top of their bodies are fiv
e visually paired rows of perforations of their endoskeleton, which are formed in a perfect star shaped pattern. These perforations act as a gas exchange system for the Sea Urchin.
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