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Boletín de la Sociedad Geológica Mexicana Volumen 74, núm. 1, A051021, 2022 http://dx.doi.org/10.18268/BSGM2022v74n1a051021
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New record of mollusks from the El Molino mammoth site, Parras, Coahuila, Mexico
Nuevo registro de moluscos del yacimiento mamuts El Molino, Parras, Coahuila, México
Perla Guadalupe Butrón Xancopinca1,*, Alexander Czaja2, Martha Carolina Aguillón3, Rosario Gómez Núñez3, Ignacio Vallejo González3, José Luis Estrada Rodríguez2
1 Universidad Michoacana de San Nicolás de Hidalgo, Instituto de Investigaciones en Ciencias de la Tierra, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico.
2 Facultad de Ciencias Biológicas, Universidad Juárez del Estado de Durango, 35010, Gómez Palacio, Durango, Mexico.
3 Laboratorio de Paleontología, Museo del Desierto, Boulevard Carlos Abedrop Dávila #3745, 25022, Saltillo, Coahuila, Mexico.
* Corresponding author: (P.G. Butrón Xancopinca) This email address is being protected from spambots. You need JavaScript enabled to view it.
How to cite this article:
Butrón Xancopinca, P.G., Czaja, A., Carolina Aguillón, M., Gómez Núñez, R., Vallejo González, I., Estrada Rodríguez, J.L., 2022, New record of mollusks from the El Molino mammoth site, Parras, Coahuila, Mexico: Boletín de la Sociedad Geológica Mexicana, 74 (1), A051021. http://dx.doi.org/10.18268/BSGM2022v74n1a051021
ABSTRACT
We present new Late Pleistocene and Holocene records of a land and freshwater malacofauna assemblage from the mammoth bearing site El Molino in Parras, Coahuila, northern Mexico. We identified 19 mollusk taxa, 14 species were found within the Late Pleistocene sediments and 10 species in the different strata belonging to the Holocene. The gastropods Gastrocopta tappaniana, Pupilla hebes and Habroconus sp. are new Late Pleistocene records for Mexico, the first two being previously recorded for United States Pleistocene deposits. New Mexican Holocene fossil records include Euglesa casertana, Galba humilis, Gastrocopta cristata, Zonitoides arboreus, Hawaiia minuscula, and Deroceras laeve. The habitat requirements of the El Molino site malacofauna assemblage provides additional information on the environmental changes that occurred during the Pleistocene-Holocene transition. Woodland associated, hygrophilic and hydrophilic malacofauna suggest a humid forested and grassland habitat during the Late Pleistocene, which subsequently changed to xeric conditions with the colonization of xerophytic and aridity-tolerant aquatic species during and after the Pleistocene-Holocene transition at the study area.
Keywords: Late Pleistocene, Holocene, freshwater mollusks, terrestrial mollusks, paleoreconstruction.
