Echinozoa

Ophiocistioidea

Helicoplacoidea

Echinoidea

Edrioasteroidea

Holothuroidea

Ophiocistioidea

Eucladia(?) beecheri Schuchert, YPM 13188

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Helicoplacoidea

Helicoplacus sp., YPM 37608

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Echinoidea

	"Cidaris" vesiculosa, YPM 37605
	Dendraster excentricus (Eschscholtz), YPM 150570
	Discoidea cylindrica Agassiz, YPM 8863
	Echinocorys vulgaris Breyn, YPM 150581
	Galeropygus agariciformis, YPM 150569
	Isomicraster sp., YPM 150580
	Paracidaris florigemma (Phillips), YPM 37604

Clypeasteroida

Clypeaster altus Luch, YPM 5876

Euechinoidea

	Clypeaster rogersi (Morton), YPM 33563
	Clypeaster rogersi (Morton), YPM 37167
	Dendraster excentricus, YPM 33575

Edrioasteroidea

	Agelocrinites cincinnatiensis Roemer, YPM 6520
	Anglidiscus? sp., YPM 37607

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Holothuroidea

Eldonia ludwigi Walcott, YPM 5824

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