EOCENE ECHINODERMATA. 



Class GKINOIDEA. 



Subclass DICYCLICA. 



Order FLEXIBILIA. 



Suborder FINN ATA. 



Family ANTEDONIDiE. 



Genus ZENOMETRA A. H. Clark. 



Zenometra (?) conoideus (Emmons). 



Microcrinus conoideus Epunons, 185S, Agriculture Eastern Counties: North Carolina Geol. Survey Rept., p. 311, figs. 246, 



247. 

 Microcrinus conoideus Conrad, 1866, Check list, Eocene and Oligocene, p. 31. 



Description. — The descriptions and figures of this form by Emmons are very inadequate. 

 Springer, who kindly examined them for the author, says : 



Emmons's figures represent the centro-dorsal of a comatulid, broken away from the radials, preserving the "rosette " 

 filled with matrix, and the " basal rays." The latter indicate noncontiguous basals — a character which removes it from 

 Atelocrinus. The regular arrangement of cirrus sockets in columns, combined with the large central cavity of the cen- 

 trodorsal, places it in the family Antedonidse, as restricted by Mr. A. H. Clark, and it might belong to a form like his 

 genus Zenometra, recent species of which occur in the Atlantic and Caribbean from the Carolinas to St. Lucia. Without 

 the superior parts of the calyx it is impossible to make closer comparison, and it must remain among the imperfectly 

 known. 



No specimens have been secured in recent collecting and no material representing this spe- 

 cies has been found in any museum. 



Locality. — Craven County, N. C. (Emmons). 

 Geologic horizon. — Trent marl, middle Eocene. 

 Collection. — Unknown. 



Class STELLEEOIDEA. 



Subclass ASTEROIDEA. 



Order CRYPTOZONIA. 



Family ASTERIIDJE. 



Genus ASTERIAS Iiinne. 

 ASTEEIAS (?) Sp. 

 Asterias Morton, 1834, Synopsis Organic Remains Cretaceous, p. 74. 



Description. — Morton says: "I have seen but a few obscure fragments of this genus, from 

 the calcareous strata of South Carolina." It is quite impossible without authentic specimens to 

 determine whether the material in Morton's hands belongs to this genus or not. 



Locality. — South Carolina. 



Geologic horizon. — Eocene. 



Collection. — Unknown. 

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