Ophiacodon is an extinct genus of synapsids belonging to the family Ophiadocodontidae that lived from the Late Carboniferous to the Early Permian in North America and possibly Europe. The genus was named along with the type species Ophiacodon mirus by paleontologist Othniel Charles Marsh in 1878 and currently includes five other species. As an ophiacodontid, Ophiacodon is one of the most basal synapsids and is the close to the evolutionary line leading to mammals.
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| - Ophiacodon is an extinct genus of synapsids belonging to the family Ophiadocodontidae that lived from the Late Carboniferous to the Early Permian in North America and possibly Europe. The genus was named along with the type species Ophiacodon mirus by paleontologist Othniel Charles Marsh in 1878 and currently includes five other species. As an ophiacodontid, Ophiacodon is one of the most basal synapsids and is the close to the evolutionary line leading to mammals.
- Ophiacodon has a large skull with a deep snout. It has the longest skull of any early synapsid, reaching up to 50 centimetres (20 in) in one specimen.[3] The jaws are lined with many small teeth. It was larger than most other tetrapods (four-limbed vertebrates) of its time, ranging from 1.6 to 3 metres (5.2 to 9.8 ft) in length and 26 to 230 kilograms (57 to 507 lb) in weight.[1]
- thumb|250px|Ophiacodon con un anfibio en la bocaLos reptiles mamiferoides eran los amos del pérmico. Ophiacodon era un animal que vivía en pantanos y ríos en busca de peces o anfibios. Pesaba entre 35 y 50 kilos y podía medir 3,5 metros de largo. Contrariamente a Dimetrodon y Edaphosaurus, no tenía vela dorsal, aunque la carencia de esta era normal entre los pelicosaurios. Tenía otra manera de mantener la temperatura de su cuerpo, convertir rápidamente la comida en energía. Ophiacodon pudo ser el comienzo de los mamíferos. Su cráneo ya tenía forma alargada y los músculos de la mandíbula le ofrecían un gran poder de mordida. Los ojos se desplazaron un poco hacia el lado, de modo que su cráneo parecía aún mayor. En posición de espera en las orillas de los lagos, permanecía inmóvil durante ci
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| - Ophiacodon is an extinct genus of synapsids belonging to the family Ophiadocodontidae that lived from the Late Carboniferous to the Early Permian in North America and possibly Europe. The genus was named along with the type species Ophiacodon mirus by paleontologist Othniel Charles Marsh in 1878 and currently includes five other species. As an ophiacodontid, Ophiacodon is one of the most basal synapsids and is the close to the evolutionary line leading to mammals.
- thumb|250px|Ophiacodon con un anfibio en la bocaLos reptiles mamiferoides eran los amos del pérmico. Ophiacodon era un animal que vivía en pantanos y ríos en busca de peces o anfibios. Pesaba entre 35 y 50 kilos y podía medir 3,5 metros de largo. Contrariamente a Dimetrodon y Edaphosaurus, no tenía vela dorsal, aunque la carencia de esta era normal entre los pelicosaurios. Tenía otra manera de mantener la temperatura de su cuerpo, convertir rápidamente la comida en energía. Ophiacodon pudo ser el comienzo de los mamíferos. Su cráneo ya tenía forma alargada y los músculos de la mandíbula le ofrecían un gran poder de mordida. Los ojos se desplazaron un poco hacia el lado, de modo que su cráneo parecía aún mayor. En posición de espera en las orillas de los lagos, permanecía inmóvil durante cierto tiempo acechando a su presa. Metía cuidadosamente la cabeza en el agua y cúando pasaba un pez lo atrapaba a gran velocidad y luego se retiraba a devorarla tranquilamente. Sabía nadar aunque tambíen se deplazaba bien por tierra. Sus patas estaban debajo del cuerpo, así su movimiento reptante le permitía avanzar a gran velocidad. Categoría:Reptiles Categoría:Reptiles mamiferoides Categoría:Pelicosaurios Categoría:Fauna del Pérmico
- Ophiacodon has a large skull with a deep snout. It has the longest skull of any early synapsid, reaching up to 50 centimetres (20 in) in one specimen.[3] The jaws are lined with many small teeth. It was larger than most other tetrapods (four-limbed vertebrates) of its time, ranging from 1.6 to 3 metres (5.2 to 9.8 ft) in length and 26 to 230 kilograms (57 to 507 lb) in weight.[1] Specimens of Ophiacodon vary greatly in size. These differences in size were once used to distinguish species, but are now recognized as ontogenetic variations related to the ages of individuals. Smaller bones often have more poorly developed joint surfaces than larger bones, implying that they come from juvenile individuals while the larger bones come from adults.[4] Analysis of the histology or microscopic anatomy of bones suggests that differences in size represent different growth stages rather than different species.
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