A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.

Macrostomatan snakes, one of the most diverse extant clades of squamates, display an impressive arsenal of cranial features to consume a vast array of preys. In the absence of indisputable fossil representatives of this clade with well-preserved skulls, the mode and timing of these extraordinary mor...

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Autores principales:	Agustín Scanferla, Hussam Zaher, Fernando E Novas, Christian de Muizon, Ricardo Céspedes
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/702ec25ba1de4dcfb788c02beb240db9
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spelling	oai:doaj.org-article:702ec25ba1de4dcfb788c02beb240db92021-11-18T07:55:14ZA new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.1932-620310.1371/journal.pone.0057583https://doaj.org/article/702ec25ba1de4dcfb788c02beb240db92013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23469206/?tool=EBIhttps://doaj.org/toc/1932-6203Macrostomatan snakes, one of the most diverse extant clades of squamates, display an impressive arsenal of cranial features to consume a vast array of preys. In the absence of indisputable fossil representatives of this clade with well-preserved skulls, the mode and timing of these extraordinary morphological novelties remain obscure. Here, we report the discovery of Kataria anisodonta n. gen. n. sp., a macrostomatan snake recovered in the Early Palaeocene locality of Tiupampa, Bolivia. The holotype consists of a partial, minute skull that exhibits a combination of booid and caenophidian characters, being the presence of an anisodont dentition and diastema in the maxilla the most distinctive trait. Phylogenetic analysis places Kataria basal to the Caenophidia+Tropidophiidae, and represents along with bolyeriids a distinctive clade of derived macrostomatans. The discovery of Kataria highlights the morphological diversity in the maxilla among derived macrostomatans, demonstrating the relevance of maxillary transformations in the evolution of this clade. Kataria represents the oldest macrostomatan skull recovered, revealing that the diversification of macrostomatans was well under way in early Tertiary times. This record also reinforces the importance of Gondwanan territories in the history of snakes, not only in the origin of the entire group but also in the evolution of ingroup clades.Agustín ScanferlaHussam ZaherFernando E NovasChristian de MuizonRicardo CéspedesPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 3, p e57583 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Agustín Scanferla Hussam Zaher Fernando E Novas Christian de Muizon Ricardo Céspedes A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.
description	Macrostomatan snakes, one of the most diverse extant clades of squamates, display an impressive arsenal of cranial features to consume a vast array of preys. In the absence of indisputable fossil representatives of this clade with well-preserved skulls, the mode and timing of these extraordinary morphological novelties remain obscure. Here, we report the discovery of Kataria anisodonta n. gen. n. sp., a macrostomatan snake recovered in the Early Palaeocene locality of Tiupampa, Bolivia. The holotype consists of a partial, minute skull that exhibits a combination of booid and caenophidian characters, being the presence of an anisodont dentition and diastema in the maxilla the most distinctive trait. Phylogenetic analysis places Kataria basal to the Caenophidia+Tropidophiidae, and represents along with bolyeriids a distinctive clade of derived macrostomatans. The discovery of Kataria highlights the morphological diversity in the maxilla among derived macrostomatans, demonstrating the relevance of maxillary transformations in the evolution of this clade. Kataria represents the oldest macrostomatan skull recovered, revealing that the diversification of macrostomatans was well under way in early Tertiary times. This record also reinforces the importance of Gondwanan territories in the history of snakes, not only in the origin of the entire group but also in the evolution of ingroup clades.
format	article
author	Agustín Scanferla Hussam Zaher Fernando E Novas Christian de Muizon Ricardo Céspedes
author_facet	Agustín Scanferla Hussam Zaher Fernando E Novas Christian de Muizon Ricardo Céspedes
author_sort	Agustín Scanferla
title	A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.
title_short	A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.
title_full	A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.
title_fullStr	A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.
title_full_unstemmed	A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.
title_sort	new snake skull from the paleocene of bolivia sheds light on the evolution of macrostomatans.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/702ec25ba1de4dcfb788c02beb240db9
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A new snake skull from the Paleocene of Bolivia sheds light on the evolution of macrostomatans.

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