New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina

Forasiepi, Analía M.; Cerdeño, Esperanza; Bond, Mariano; Schmidt, Gabriela I.; Naipauer, Maximiliano; Straehl, Fiona R.; Martinelli, Agustín G.; Garrido, Alberto C.; Schmitz, Mark D.; Crowley, James L.

doi:10.1007/s12542-014-0233-5

Cited by 29 publications

(44 citation statements)

References 48 publications

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“…2C, 6, 8A). We interpret these openings as conforming to foramina for rami temporales, seen in many other mammals (see Cerebral Endocast) and recently described for certain notoungulates (MacPhee, 2014;Forasiepi et al, 2015b; see also squamosal-parietal fenestration in García-López and Powell, 2011: fig. 1C).…”

Section: Vaultsupporting

confidence: 84%

“…14) is very similar to that of some notoungulates (e.g., Toxodontia; Gabbert, 2004;Forasiepi et al, 2015b). There are three main apertures, dorsally bordered by the orbital crest.…”

Section: Orbitsupporting

confidence: 53%

“…Because of their size and lateral disposition, the divisions of CN V are usually the only cranial nerves that can be separately identified in the middle cranial fossa, and this is the case in IANIGLA-PV 29. The casts of the tracks of CN V 1 and CN V 2 converge at the sphenoorbital fissure, while that for the mandibular nerve (CN V 3 ) passes through a distinct foramen ovale, as in other SANUs (Gabbert, 2004;Forasiepi et al, 2015b). As noted in the description of the skull, IANIGLA-PV 29 lacks a foramen rotundum providing an independent exit for the maxillary nerve (CN V 2 ).…”

Section: Cerebral Endocastmentioning

confidence: 85%

“…XVII]; Huayqueriana cristata holotype), this element in IANIGLA-PV 29 is only vaguely crescentic, lacking significant medial and lateral flanges and forming neither an enclosing bulla nor a well-defined external acoustic meatus. In this regard litopterns are quite different from notoungulates (Patterson, 1932(Patterson, , 1934Gabbert, 2004;MacPhee, 2014;Forasiepi et al, 2015b).…”

Section: Middle Earmentioning

confidence: 99%

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Exceptional Skull of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From the Late Miocene of Argentina: Anatomy, Systematics, and Paleobiological Implications

Forasiepi

MacPhee

Pino

et al. 2016

Bulletin of the American Museum of Natural History

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Section: Vaultsupporting

confidence: 84%

“…14) is very similar to that of some notoungulates (e.g., Toxodontia; Gabbert, 2004;Forasiepi et al, 2015b). There are three main apertures, dorsally bordered by the orbital crest.…”

Section: Orbitsupporting

confidence: 53%

Section: Cerebral Endocastmentioning

confidence: 85%

Section: Middle Earmentioning

confidence: 99%

See 2 more Smart Citations

Exceptional Skull of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From the Late Miocene of Argentina: Anatomy, Systematics, and Paleobiological Implications

Forasiepi

MacPhee

Pino

et al. 2016

Bulletin of the American Museum of Natural History

Self Cite

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“…Then, we carried out searches under implied weights (k3-k100) and from k6 the program provided two most parsimonious topologies, which better established the relationships of the Xotodon clade. These trees are discussed in the corresponding section and compared with previous results (Forasiepi et al, 2015).…”

Section: Methodsmentioning

confidence: 82%

First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene–early Pliocene of the southern central Andes, NW Argentina

Bonini¹,

Schmidt²,

Reguero³

et al. 2017

J. Paleontol.

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Abstract.-A new species of toxodontid notoungulate, Xotodon maimarensis n. sp., is described from the Maimará Formation (late Miocene-early Pliocene), Jujuy Province, northwestern Argentina. This is the first record of a toxodontid from the Eastern Cordillera. The specimen is housed at the Museo de Geología, Mineralogía y Paleontología, Instituto de Geología y Minería de la Universidad Nacional de Jujuy. It consists of an incomplete mandible preserving the right mandibular ramus with part of the dental series, partially preserved symphysis with all the incisors, and a small portion of the left ramus without teeth. The following characters distinguish it as a new taxon: symphysis long and narrow with slight divergence of its lateral borders; strong procumbence of lower incisors and deeply implanted i3; chin angle lower than in X. major and X. cristatus and bulging labial keel limiting strong lateral concavities. Comparative analysis in the context of the recently revised Neogene Toxodontidae indicates that the Maimará specimen shares mandibular features and dental characters with Xotodon and Mixotoxodon, differing from the latter by the more upraised symphysis. The phylogenetic position of Xotodon maimarensis n. sp. supports the taxonomic interpretation of the studied specimen as a new species of Xotodon. This new Toxodontidae increases the knowledge of the diversity and radiation of this group of notoungulates in northwest Argentina.

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Hyperspecialization in Some South American Endemic Ungulates Revealed by Long Bone Microstructure

2015

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New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina

Abstract: We describe a new toxodontid species, Nesodon taweretus sp. nov.

Cited by 29 publications

References 48 publications

Exceptional Skull of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From the Late Miocene of Argentina: Anatomy, Systematics, and Paleobiological Implications

Exceptional Skull of Huayqueriana (Mammalia, Litopterna, Macraucheniidae) From the Late Miocene of Argentina: Anatomy, Systematics, and Paleobiological Implications

First record of Toxodontidae (Mammalia, Notoungulata) from the late Miocene–early Pliocene of the southern central Andes, NW Argentina

Hyperspecialization in Some South American Endemic Ungulates Revealed by Long Bone Microstructure

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