Classification of Clark 1904

Ph. Echinodermata Klein 1754
show all | hide all
Cl. Echinoidea Leske 1778 [sea urchin]
hide
Or. Clypeasteroida Agassiz 1836 [sand dollar]
hide
Fm. Scutellidae Gray 1825
hide
G. †Scutella Lamarck 1816
+
Scutella aberti Conrad 1842
Or. Spatangoidea Agassiz 1840 [heart urchin]
hide
Fm. Spatangidae Gray 1825
hide
G. Echinocardium Gray 1825
+
Echinocardium orthonotus Conrad 1843
Cl. Ophiuroidea Gray 1840 [brittle star]
hide
Fm. Ophiureae Müller and Troschel 1840
hide
G. Ophioderma Müller and Troschel 1840