Class Asteroidea - By turning the crinoid upside down and joining the arms together in pairs, you approximate a seastar. - the arms are usually in multiples of 5. - the mouth is ventral. - there are ...

THE early stages in the life-history of recent crinoids have always been regarded with interest, because it was hoped that they would throw light on the evolution of this class, so rich and ...

QUESTION: Echinoderms are represented by five living classes. The crinoids are considered to be most similar to ancestral echinoderms. Although the fossil record is inconclusive, it appears that the ...

#25 Stalked Crinoids (Phylum Echiondermata, Class Crinoidea, Sub Class Articulata) Sure we call them sea lilies but they're no pansies. While most people have nightmares about giant squid or shark, ...

Christian VOICULESCU-HOLVAD, Brett CLARK & Timothy A. M. EWIN., 2023: The internal anatomy of Middle Jurassic comatulid cups (Comatulida, Articulata, Crinoidea), as revealed by X-ray microtomography, ...

Belonging to class Crinoidea, meaning "a lily form" in Greek, they can be occasionally found in shallow waters, though they are usually seen beyond depths of 200 m. to as deep as 6,000 m.