Feeding habits and habitat of herbivorous mammals from the Early-Late Hemphillian (Miocene) of Costa Rica
Por:
Pérez-Crespo V.A., Laurito C.A., Arroyo-Cabrales J., Valerio A.L., Morales-Puente P., Cienfuegos-Alvarado E., Otero F.J.
Publicada:
1 ene 2018
Categoría:
Paleontology
Resumen:
Carbon and oxygen stable isotope values in the dental enamel of fossils
were used to infer the diet and habitat of the extinct equids Calippus
hondurensis, Dinohippus mexicanus, and Protohippus gidleyi, the
gomphothere Gomphotherium hondurensis, and the llama Hemiauchenia vera
of the Early-Late Hemphillian (Hh2) from San Gerardo de Limoncito,
Puntarenas province, Costa Rica. The results suggest that these mammals
fed mainly on C-3 plants and lived in clearings of rainforests. This
contrasts with previous studies from North America that indicated that
the same species lived in forest savannas and fed mainly on C-4 plants,
but it is similar to the results obtained from the palynological record
of the area, as well as with several vegetation models suggesting the
presence of humid tropical forest during the Miocene in Central America.
Filiaciones:
Instituto de Geología, Universidad Nacional Autónoma de México, Circuito de la Investigación Científica S/N, Ciudad Universitaria, Del. Coyoacán, 04150, Mexico
Instituto Nacional de Aprendizaje, La Uruca, San José, Costa Rica
Departamento de Historia Natural, Museo Nacional de Costa Rica, San José, 749-1000, Costa Rica
Laboratorio de Arqueozoología “M. en C. Ticul Álvarez Solórza-no”, Subdirección de Laboratorios y Apoyo Académico, INAH, Moneda 16 Col., Centro, 06060, Mexico
Departamento de Historia Natural, Museo Nacional de Costa Rica., San José, 749-1000, Costa Rica
Laboratorio de Isótopos Estables, Laboratorio Nacional de Geoquímica y Mineralogía, LANGEM-UNAM, Ciudad Universitaria, Coyoacán, 04150, Mexico
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