Echinodermata Klein, 1734 Crinoidea
Miller, 1821 Isselicrinus sp.
Treatise on Invertebrate Paleontology, Part T pars, Echinodermata 4, Crinoidea
La seccion de equinodermos de la Coleccion de Referencia de Bentos Costero de El Colegio de la Frontera Sur (ECOSUR) contiene 924 organismos agrupados en cinco clases: Crinoidea
(5), Asteroidea (18), Ophiuroidea (664), Echinoidea (184) y Holothuroidea (53) distribuidos en 15 ordenes, 22 familias, 30 generos y 56 especies.
Discussion--Suprageneric classification of the Crinoidea
follow Moore and Teichert (1978) with the modifications of Ausich (1998a,b).
The Echinodermata are represented by a number of groups: Crinoidea
, represented by articulated calyxes and disarticulated columnals and brachials; Blastoidea, represented by columnals and calyxes, especially those of Pentremites conoideus; Echinoidea, represented by disarticulated interambulacral plates as well as several largely intact specimens; and Asteroidea, represented by one nearly complete specimen, as well as disarticulated dorsal plates from the same species.