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Un aegialodontid molar superior y la evolución de la dentición de los mamíferos
Alexey V Lopatin1, Alexander O Averianov
1Paleontological Institute, Russian Academy of Sciences, Profsojuznaya ul. 123, Moscow 117997, Russia. alopat@paleo.ru
Science (New York, N.Y.)
|August 26, 2006
Resumen
El descubrimiento de un molar superior de Kielantherium, un mamífero aegialodontid, arroja luz sobre la evolución temprana de los mamíferos terianos. Este fósil proporciona información crucial sobre el desarrollo de los molares tribosfénicos, clave para las adaptaciones dietéticas de los mamíferos.
Área de la Ciencia:
- Paleontología Paleontología.
- Evolución de los mamíferos Evolución de los mamíferos
- Período Cretácico Período Cretácico
Sus antecedentes:
- El patrón molar tribosfénico es una característica definidora de los mamíferos terianos, lo que permite un procesamiento eficiente de los alimentos y dietas diversas.
- La tribosfenia funcional evolucionó varias veces, pero solo tuvo éxito en el linaje Boreosphenida.
- Las primeras etapas de la boreosphenidan tribospheny son poco conocidas, con evidencia principalmente de los molares inferiores.
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