A primitive tube-bearing antillocaprinid rudist bivalve,Parasarcolites sohli sp. nov,from Jamaica and Puerto Rico,West Indies |
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| Institution: | 1. School of Geosciences, University of South Florida, 4202 East Fowler Ave., NES 107, Tampa, FL, 33620, United States;2. Department of Marine, Earth, and Atmospheric Sciences, Campus Box 8208, North Carolina State University, Raleigh, NC 27695-8208, United States;3. Tampa, FL, 33613, United States;1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;2. College of Earth Science and Key Laboratory of Tectonic Controls on Mineralization and Hydrocarbon Accumulation, Chengdu University of Technology, Chengdu, China;3. Department of Earth & Environmental Sciences, University of Kentucky, Lexington, KY 40506-0053, USA;4. Institute of Earth Surface Dynamics (IDYST), University of Lausanne, 1015 Lausanne, Switzerland |
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| Abstract: | The new antillocaprinid rudist bivalve Parasarcolites sohli sp. nov. is described from the Maastrichtian rocks of Puerto Rico (El Rayo Formation) and Jamaica (Sunderland Inlier). The species shows that all tubes, one of the diagnostic features of the genus, arise by the development of flanges on costae to roof over the intercostal space between adjacent costae. This is the first time that this feature has been unequivocally shown in an antillocaprinid rudist and suggests that tubes in other antillocaprinid rudists arose in a similar way. The species occurs in early Maastrichtian deposits of Puerto Rico and Jamaica, and represents a potential marker species in future biostratigraphic studies. |
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