| 词条 | Eocardiidae |
| 释义 |
| fossil_range = Early-Mid Miocene (Colhuehuapian-Friasian) ~{{Fossil range|21.0|15.5}} | image = Eocardia.jpg | image_caption = Skeletal restoration of Eocardia | taxon = Eocardiidae | authority = Ameghino 1891 | subdivision_ranks = Subfamilies and Genera | subdivision = †Eocardiinae
†Luantinae
}} The Eocardiidae are an extinct family of caviomorph rodents from South America. The family is probably ancestral to the living family Caviidae,[1] which includes cavies, maras, and capybaras and their relatives. McKenna and Bell (1997) divided eocardiids into two subfamilies, Luantinae for two of the oldest genera (Asteromys and Luantus) and Eocardiinae for remaining genera. Kramarz (2006) has recommended the abandonment of these subfamilies, as the genera placed in Luantinae appear to represent basal eocardiids, rather than a specialized side branch. The latter hypothesis had been proposed by Wood and Patterson (1959).[2] Fossils of the family were found in the Colhuehuapian to Friasian Pinturas, Sarmiento, Santa Cruz, Río Jeinemeiní and Collón Curá Formations and the Colhué Huapí Member of Argentina and the Cura-Mallín Group of Chile.[3] References{{portal|Neogene|Prehistoric mammals|Prehistory of South America}}1. ^Kramarz, 2006 2. ^Wood & Patterson, 1959 3. ^Eocardiidae at Fossilworks.org Bibliography
Further reading
9 : Hystricognath rodents|Prehistoric rodent families|Miocene mammals of South America|Colhuehuapian|Santacrucian|Friasian|Miocene first appearances|Miocene extinctions|Taxa named by Florentino Ameghino |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。