Cramauchenia is an extinct genus of litoptern South American ungulate. Cramauchenia was named by Florentino Ameghino. The name has no literal translation. Instead, it is an anagram of the name of a related genus Macrauchenia. This genus was initially discovered in the Sarmiento Formation in the Chubut Province, in Argentina, and later it was found in the Chichinales Formation in the Río Negro Province and the Cerro Bandera Formation in Neuquén, also in Argentina, in sediments assigned to the SALMA Colhuehuapian (in the Early Miocene), as well as the Agua de la Piedra Formation in Mendoza, in s
Cramauchenia is an extinct genus of litoptern South American ungulate. Cramauchenia was named by Florentino Ameghino. The name has no literal translation. Instead, it is an anagram of the name of a related genus Macrauchenia. This genus was initially discovered in the Sarmiento Formation in the Chubut Province, in Argentina, and later it was found in the Chichinales Formation in the Río Negro Province and the Cerro Bandera Formation in Neuquén, also in Argentina, in sediments assigned to the SALMA Colhuehuapian (in the Early Miocene), as well as the Agua de la Piedra Formation in Mendoza, in sediments dated to the Deseadan (during the Late Oligocene). In 1981 Soria made C. insolita a junior synonym of C. normalis. A specimen of C. normalis was described in 2010 from Cabeza Blanca (Chubut, Argentina) in the Sarmiento Formation, in sediments assigned to the Deseadan SALMA (Upper Oligocene). ==Description== This animal had an appearance vaguely similar to that of a small llama or perhaps that of a stocky antelope. The skull of this animal was relatively elongated and provided with a slightly recessed nasal opening, which would indicate the presence of a strong, muscular lip, likely prehensile. In similar but larger and more recent forms, such as Theosodon and Scalabrinitherium, this lip gradually developed, eventually giving rise to a possibly proboscis-like structure with Macrauchenia. ==Taxonomy== Cramauchenia was first described by Florentino Ameghino in 1902, based on fossils found in the Sarmiento Formation of Argentina. It is a primitive representative of the Macraucheniidae, a group of South American mammals belonging to the Litopterna, with forms similar to those of camelids, despite not being closely related. Cramauchenia is known for the sole species C. normalis. Another species, C. insolita, was initially described as a separate species, but following a study by Soria 1981 it has since been attributed to the type species. Furthermore, Cramauchenia has been assigned to the Cramaucheniinae, a subfamily including the most basal macraucheniids, however, many recent studies tend to indicate that the subfamily is paraphyletic, with Cramauchenia being most closely related to Pternoconius.
The following position of the Macraucheniidae is based on McGrath et al. 2018, showing the position of Cramauchenia.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).