Results 111 to 120 of about 380 (140)
Geodiversitas, 2023 ABSTRACT Litopterna is one the most diverse and long–lived clades of South American native ungulates. Megadolodus and Neodolodus are bunodont litoptern genera recorded in the middle Miocene tropical faunistic assemblage of La Venta (Colombia).
Juan D Carrillo +2 more
exaly +6 more sources
A new dentition-based phylogeny of Litopterna (Mammalia: Placentalia) and ‘archaic’ South American ungulates [PDF]
Zoological Journal of the Linnean SocietyAbstract Ever since the discovery of Macrauchenia patachonica by Charles Darwin in 1834, the affinities of litopterns—a group of extinct South American Native Ungulates (SANUs)—have been elusive. In particular, the interfamilial relationships and timing of the familial diversification within the order Litopterna have not been addressed ...
Hans P Püschel +2 more
exaly +5 more sources
A new ‘South American ungulate’ (Mammalia: Litopterna) from the Eocene of the Antarctic Peninsula [PDF]
Geological Society Special Publication, 2006 Abstract Notolophus arquinotiensis , a new genus and species of the family Sparnotheriodontidae (Mammalia, Litopterna), is represented by several isolated teeth from the shallow-marine sediments of the La Meseta Formation (late Early-Late Eocene) of Seymour Island, Antarctic Peninsula, which have also yielded the ...
Bond, Mariano +3 more
exaly +4 more sources
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A new genus of Proterotheriinae (Mammalia, Litopterna) from the Pleistocene of Uruguay
Journal of Vertebrate Paleontology, 2019ABSTRACTWe describe a new genus and species of Proterotheriinae from the Pleistocene of Uruguay.
Andrea Corona +2 more
exaly +2 more sources
Paleoneurology of Litopterna: Digital and Natural Endocranial Casts of Macraucheniidae
2022The digital endocasts of Cramauchenia normalis, Theosodon cf. T. gracilis, and Macrauchenia patachonica described herein provide an interesting perspective to begin understanding litoptern brain evolution, particularly to improve our under¬standing of evolution within the Macraucheniidae.The endocasts of Cramauchenia normalis and Theosodon cf.
Dozo, Maria Teresa +2 more
openaire +2 more sources
Petrosal and inner ear anatomy and allometry amongst specimens referred to Litopterna (Placentalia) [PDF]
Zoological Journal of the Linnean Society, 2015 New isolated petrosals from the Itaboraí beds of Brazil (late Palaeocene or early Eocene) are here described and referred to the early diverging litoptern Miguelsoria parayirunhor, based on phylogenetic, size, and abundance arguments. Both the external and internal anatomy of these specimens were investigated, which for the first time document many ...
Guillaume Billet +2 more
exaly +4 more sources
A new Cramaucheniinae (Litopterna, Macraucheniidae) from the early Miocene of Patagonia, Argentina
Journal of Vertebrate Paleontology, 2016ABSTRACTA new litoptern Cramaucheniinae species, Pternoconius bondi, sp. nov., from Colhuehuapian levels of the Sarmiento Formation in Bajada del Diablo (Chubut, Argentina) is described herein. The specimen belongs to an adult animal and preserves the anterior portion of the skull with the maxillary region, some fragments of nasal bones, a small ...
Javier N Gelfo
exaly +3 more sources
Journal of South American Earth Sciences, 2008
Abstract This paper deals with the new mammal remains from the Rio Quinto Formation, found at the Arroyo La Petra locality (San Luis, Argentina). They consist of an incomplete skull and two mandibular fragments of a macraucheniid, both with milk dentition and M1/m1 erupting, corresponding to a very young individual.
Esperanza Cerdeno
exaly +2 more sources
Abstract This paper deals with the new mammal remains from the Rio Quinto Formation, found at the Arroyo La Petra locality (San Luis, Argentina). They consist of an incomplete skull and two mandibular fragments of a macraucheniid, both with milk dentition and M1/m1 erupting, corresponding to a very young individual.
Esperanza Cerdeno
exaly +2 more sources
Postcranial osteology and functional morphology of the Litopterna of Salla, Bolivia (Late Oligocene)
Journal of Vertebrate Paleontology, 1999ABSTRACT Postcranial remains of litopterns of Salla, Bolivia are described and discussed in terms of their functional morphology. These elements are not associated with dental remains, but can be confidently referred to the family Macraucheniidae or Proterotheriidae. The macraucheniids (cf. Coniopternium spp.) have transversely stable joints indicating
Bruce J Shockey
exaly +2 more sources