Prehistroic Models: Echinodermata

Echinodermata means “spiny or hedgehog skin” consist of sea stars, sea urchins, sand dollars, sea cucumbers, and crinoids “sea lillyies”. Most animals have bilateral symmetry, adults echinoderms have pentameral (five-point) symmetry. The earliest members of this group appears during the Cambrian Perion over 500 million years ago.

Domain: Eukarya – Kingdom: Animalia – Phylum: Echinodermata – Superclass: Asterozoa – Class: Asteroidea

(sea  stars formally “starfish”)

Triassic to Present

Common name: Sea Star
Previous name: Formerly “Star Fish”
Time range: Triassic to Holocene
Common name: Sea Star
Previous name: Formerly “Star Fish”
Time range: Triassic to Holocene
Common name: Sea Star
Previous name: Formerly “Star Fish”
Time range: Triassic to Holocene
Common name: Sea Star
Previous name: Formerly “Star Fish”
Time range: Triassic to Holocene
Common name: Sea Star
Previous name: Formerly “Star Fish”
Time range: Triassic to Holocene

Domain: Eukarya – Kingdom: Animalia – Phylum: Echinodermata – Subphylum: Echinozoa – Class: Holothuroidea

(sea cucumber)

Ordovician to Present

Common name: Sea Cucumber
Time range: Ordovician to Holocene

The video below is from my YouTube Jurassic James 65:

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