New genera and higher groups of unstalked crinoids
By: By Austin Hobart Clark ...
Series: Proceedings of the Biological society of Washington -- vol. xxii...Sept. 14, 1909; [Geological pamphlets. Paleontology -- 255-292]; [Geological pamphlets -- 255-292]; Proceedings of the Biological Society of Washington -- v. 22
Published: n. d.
Place of publication: n. p
Language: eng
Number of pages: 177
Subjects: Crinoidea; Fossil Echinodermata
Notes: A separate.

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