Upper Cretaceous Crustacea from Mexico and Colombia: similar faunas and environments during Turonian times
Nine taxa represent the crustacean component of the Turonian fauna from the Eagle Ford Grouplimestones and marls that crop out in several quarries, northwest of Múzquiz, Coahuila, Mexico. Threecrustacean taxa are found in common with deposits of similar age and paleoenvironment of the San RafaelForm...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2007 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57224309 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57224309 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias de la Tierra Mexico Turonian Colombia Crustacea Cretaceous |
| Sumario: | Nine taxa represent the crustacean component of the Turonian fauna from the Eagle Ford Grouplimestones and marls that crop out in several quarries, northwest of Múzquiz, Coahuila, Mexico. Threecrustacean taxa are found in common with deposits of similar age and paleoenvironment of the San RafaelFormation of Colombia. Planktic foraminifera, ammonoids, inoceramid bivalves, fi shes, marine reptiles,a pterosaur and plant remains were preserved in the Múzquiz quarries, in what has been interpreted as ananoxic, low energy bottom at a water depth of no less than 50 m. The cirriped Stramentum preserved onthe ammonite Forresteria is described. Stomatopod remains of the family Pseudosculdidae are described,their incompleteness and poor preservation prevent their detailed identifi cation. One species of scyllaridlobster is included. An indeterminant species of nephropid lobster is also part of this assemblage. Presenceof Gourretia aquilae (Rathbun) new combination, confi rms correlation with the Eagle Ford Group inTexas. A systematic and morphologic review is provided for Cenomanocarcinus vanstraeleni Stenzel, aspecies widely distributed during Turonian times, and based on morphologic features of the abdomen andits relationship with coxae, it is assigned to the Podotremata. Also, preservation of soft tissue is reportedfrom C. vanstraeleni and the scyllarid lobster. The raninid Cretacoranina sp. cf. C. dichrous (Stenzel) isalso reported. In addition, two raninid taxa are described, their poor preservation prevents more detailedidentifi cation. The fl attened appendages of C. vanstraeleni and of the raninid species suggest a burrowinghabit and/or active swimming. |
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