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- Koilamasuchus abstract "Koilamasuchus is an extinct genus of Early Triassic archosauriform. Remains have been found from the Quebrada de los Fósiles Formation of the Puesto Viejo Group in Argentina. The holotype specimen of Koilamasuchus gonzalezdiazi, the type species, is the most well preserved and best known specimen of a basal archosauriform in South America. The fossil has been known since 1981 when it was first described by paleontologist José Bonaparte, but it was not described as a new genus and species until 2010.The holotype specimen is an external mold of various parts of the postcranial skeleton, including dorsal vertebrae and ribs, osteoderms, an ilium, a humerus, an ungual, a chevron, a possible gastralium, and two metapodials (either metacarpals or metatarsals). The mold has several diagnostic features, such as an elongated illiac blade that is convex along its upper margin, that indicate that it is an archosauriform.A phylogenetic analysis was conducted along with the naming of the genus. Koilamasuchus was found to be closely related to Archosauria, a crown group that includes living crocodilians and birds. It was placed as the sister taxon to a clade containing Archosauria and Erythrosuchidae, a family of large basal archosauriforms. According to the resulting phylogenetic tree, Koilamasuchus is more derived than Osmolskina, Sarmatosuchus, Fugusuchus (commonly thought to be an erythrosuchid), and proterosuchids (which were found to be paraphyletic). Being more derived than these other taxa, Koilamasuchus is closer to the crown group Archosauria.Koilamasuchus is considered more derived than proterosuchids and other early archosauriforms because it possesses an iliac preacetabular process, or a bony projection near the acetabulum (part of the hip joint). The pubic peduncle, a projection on the ilium that connects it to the pubis and forms part of the front edge of the acetabulum, is angled less than 45° from the bone's vertical axis. This is a derived feature not seen in more basal archosauriforms. Koilamasuchus had dorsal osteoderms covering its back, which are also present in erythrosuchids and some archosaurs, but not in more basal archosauriforms such as proterosuchids.".
- Koilamasuchus wikiPageID "28835664".
- Koilamasuchus wikiPageRevisionID "566900839".
- Koilamasuchus authority "Ezcurra et al., 2010".
- Koilamasuchus fossilRange Early_Triassic.
- Koilamasuchus hasPhotoCollection Koilamasuchus.
- Koilamasuchus subdivision "* K. gonzalezdiazi (Ezcurra et al., 2010 )".
- Koilamasuchus subdivisionRanks "Species".
- Koilamasuchus subject Category:Archosaurs.
- Koilamasuchus subject Category:Prehistoric_reptiles_of_South_America.
- Koilamasuchus subject Category:Triassic_reptiles.
- Koilamasuchus type Animal100015388.
- Koilamasuchus type Archosaur101695681.
- Koilamasuchus type Archosaurs.
- Koilamasuchus type Chordate101466257.
- Koilamasuchus type Diapsid101661818.
- Koilamasuchus type LivingThing100004258.
- Koilamasuchus type Object100002684.
- Koilamasuchus type Organism100004475.
- Koilamasuchus type PhysicalEntity100001930.
- Koilamasuchus type PrehistoricReptilesOfSouthAmerica.
- Koilamasuchus type Reptile101661091.
- Koilamasuchus type TriassicReptiles.
- Koilamasuchus type Vertebrate101471682.
- Koilamasuchus type Whole100003553.
- Koilamasuchus comment "Koilamasuchus is an extinct genus of Early Triassic archosauriform. Remains have been found from the Quebrada de los Fósiles Formation of the Puesto Viejo Group in Argentina. The holotype specimen of Koilamasuchus gonzalezdiazi, the type species, is the most well preserved and best known specimen of a basal archosauriform in South America.".
- Koilamasuchus label "Koilamasuchus".
- Koilamasuchus label "Koilamasuchus".
- Koilamasuchus sameAs Koilamasuchus.
- Koilamasuchus sameAs m.0dd9zw8.
- Koilamasuchus sameAs Q6426285.
- Koilamasuchus sameAs Q6426285.
- Koilamasuchus sameAs Koilamasuchus.
- Koilamasuchus wasDerivedFrom Koilamasuchus?oldid=566900839.
- Koilamasuchus isPrimaryTopicOf Koilamasuchus.