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2018 | 63 | 4 |

Tytuł artykułu

Feeding habits and habitat of herbivorous mammals from the Early–Late Hemphillian (Miocene) of Costa Rica

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Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
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 C₃ 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 C₄ 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.

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Tom

63

Numer

4

Opis fizyczny

p.645-652,fig.,ref.

Twórcy

  • Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Circuito de la Investigacion Cientifica S/N, Ciudad Universitaria, Del. Coyoacan, 04150, Mexico
autor
  • Instituto Nacional de Aprendizaje, La Uruca, San Jose, Costa Rica
  • Departamento de Historia Natural, Museo Nacional de Costa Rica, 749-1000, San Jose, Costa Rica
  • Laboratorio de Arqueozoología “M. en C. Ticul Alvarez Solorzano”, Subdireccion de Laboratorios y Apoyo Academico, INAH, Moneda 16 Col. Centro, 06060, Mexico
autor
  • Departamento de Historia Natural, Museo Nacional de Costa Rica, 749-1000, San Jose, Costa Rica
  • Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Circuito de la Investigacion Cientifica S/N, Ciudad Universitaria, Del. Coyoacan, 04150, Mexico
  • Laboratorio de Isotopos Estables, Laboratorio Nacional de Geoquimica y Mineralogia, LANGEM-UNAM, Ciudad Universitaria, Coyoacan, 04150, Mexico
  • Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Circuito de la Investigacion Cientifica S/N, Ciudad Universitaria, Del. Coyoacan, 04150, Mexico
  • Laboratorio de Isotopos Estables, Laboratorio Nacional de Geoquimica y Mineralogia, LANGEM-UNAM, Ciudad Universitaria, Coyoacan, 04150, Mexico
autor
  • Instituto de Geologia, Universidad Nacional Autonoma de Mexico, Circuito de la Investigacion Cientifica S/N, Ciudad Universitaria, Del. Coyoacan, 04150, Mexico
  • Laboratorio de Isotopos Estables, Laboratorio Nacional de Geoquimica y Mineralogia, LANGEM-UNAM, Ciudad Universitaria, Coyoacan, 04150, Mexico

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