Contributed by Dinesh Srivastava, June 2009
Diagnostic Features |
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Distribution | Middle Miocene Gaj Formation, Gujarat, India |
Type | Holotype: GSI Type No. 21425; Paratypes: GSI Type Nos. 21426, 21427, 21428, 20771, 20773 Museum of the Geological Survey of India, Kolkata, India. |
Classification and/or Status | Clypeasteroida; Laganiformes; Fibulariidae A species of Echinocyamus van Phelsum, 1774 |
Remarks | This species resembles to some extent Echinocyamus chipolanus Cooke, 1942 described from the sediments of the Chipola Formation (Miocene) of Florida (Cooke, 1942). However, E. lowraliensis lacks an arched aboral surface, has shorter petaloids, and the periproct is closer to the posterior ambitus. Moreover, E. lowraliensis specimens appear to reach a larger test size than E. chipolanus. Cooke, C. W. 1942. Cenozoic irregular echinoids of eastern United States. Journal of Palaeontology 16. 29-30. Srivastava, D. K., Mooi, R. & Jain, R. L. 2009. The clypeasteroid echinoid genus Echinocyamus from the Gaj Formation (middle Miocene) of Kathiawar, Gujarat, India. Journal of the Palaeontological Society of India 54, 97-102. |