New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)

Autores
Di Pietro, Diego Omar; Alcalde, Leandro; Williams, Jorge Daniel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We here describe the skull in four species of the three genera of the tribe Hydropsini (Serpentes: Dipsadidae: Xenodontinae): Helicops infrataeniatus, H. leopardinus, Hydrops caesurus and Pseudoeryx plicatilis. We compare them with several genera of Dipsadidae. We found that the unpaired foramen on the parabasisphenoid with anterior position is the only skull feature shared by all Hydropsini genera. This feature also occurs in semi-aquatic (Erythrolamphrus semiaureus) and fully-aquatic (Farancia abacura) dipsadids. All species of Hydrops with available skull descriptions and Pseudoeryx plicatilis share four features: (1) The anterior border of the angular is higher than the posterior border of the splenial, (2) the vomerine processes of the premaxilla are long, (3) the ascending process of the premaxilla overlaps the horizontal lamina of the nasals, and (4) an anterior projection of the prefrontal is present. All species of Helicops with available skull descriptions and Pseudoeryx plicatilis share three features: (1) A vertical lamina of the nasal with a notch, (2) a single foramen rotundum, and (3) the presence of a ventral projection of the transverse crista of the basioccipital. Finally, we found small, paired parietal foramina in most of the dipsadids studied here, which are filled with a Sudan-Black-positive tissue of possible nervous origin.
Facultad de Ciencias Naturales y Museo
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Materia
Ciencias Naturales
Cranial osteology
Serpentes
Hydropsini
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/102831

id SEDICI_7ee285a088588847c71d507d2350a2d3
oai_identifier_str oai:sedici.unlp.edu.ar:10915/102831
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)Di Pietro, Diego OmarAlcalde, LeandroWilliams, Jorge DanielCiencias NaturalesCranial osteologySerpentesHydropsiniWe here describe the skull in four species of the three genera of the tribe Hydropsini (Serpentes: Dipsadidae: Xenodontinae): Helicops infrataeniatus, H. leopardinus, Hydrops caesurus and Pseudoeryx plicatilis. We compare them with several genera of Dipsadidae. We found that the unpaired foramen on the parabasisphenoid with anterior position is the only skull feature shared by all Hydropsini genera. This feature also occurs in semi-aquatic (Erythrolamphrus semiaureus) and fully-aquatic (Farancia abacura) dipsadids. All species of Hydrops with available skull descriptions and Pseudoeryx plicatilis share four features: (1) The anterior border of the angular is higher than the posterior border of the splenial, (2) the vomerine processes of the premaxilla are long, (3) the ascending process of the premaxilla overlaps the horizontal lamina of the nasals, and (4) an anterior projection of the prefrontal is present. All species of Helicops with available skull descriptions and Pseudoeryx plicatilis share three features: (1) A vertical lamina of the nasal with a notch, (2) a single foramen rotundum, and (3) the presence of a ventral projection of the transverse crista of the basioccipital. Finally, we found small, paired parietal foramina in most of the dipsadids studied here, which are filled with a Sudan-Black-positive tissue of possible nervous origin.Facultad de Ciencias Naturales y MuseoInstituto de Limnología "Dr. Raúl A. Ringuelet"2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1-14http://sedici.unlp.edu.ar/handle/10915/102831enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/22227info:eu-repo/semantics/altIdentifier/issn/1827-9643info:eu-repo/semantics/altIdentifier/doi/10.13128/Acta_Herpetol-12988info:eu-repo/semantics/altIdentifier/hdl/11336/22227info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:52:11Zoai:sedici.unlp.edu.ar:10915/102831Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:52:11.433SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
title New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
spellingShingle New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
Di Pietro, Diego Omar
Ciencias Naturales
Cranial osteology
Serpentes
Hydropsini
title_short New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
title_full New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
title_fullStr New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
title_full_unstemmed New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
title_sort New cranial characters in the tribe <i>Hydropsini</i> (Serpentes: Dipsadidae: Xenodontinae)
dc.creator.none.fl_str_mv Di Pietro, Diego Omar
Alcalde, Leandro
Williams, Jorge Daniel
author Di Pietro, Diego Omar
author_facet Di Pietro, Diego Omar
Alcalde, Leandro
Williams, Jorge Daniel
author_role author
author2 Alcalde, Leandro
Williams, Jorge Daniel
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Cranial osteology
Serpentes
Hydropsini
topic Ciencias Naturales
Cranial osteology
Serpentes
Hydropsini
dc.description.none.fl_txt_mv We here describe the skull in four species of the three genera of the tribe Hydropsini (Serpentes: Dipsadidae: Xenodontinae): Helicops infrataeniatus, H. leopardinus, Hydrops caesurus and Pseudoeryx plicatilis. We compare them with several genera of Dipsadidae. We found that the unpaired foramen on the parabasisphenoid with anterior position is the only skull feature shared by all Hydropsini genera. This feature also occurs in semi-aquatic (Erythrolamphrus semiaureus) and fully-aquatic (Farancia abacura) dipsadids. All species of Hydrops with available skull descriptions and Pseudoeryx plicatilis share four features: (1) The anterior border of the angular is higher than the posterior border of the splenial, (2) the vomerine processes of the premaxilla are long, (3) the ascending process of the premaxilla overlaps the horizontal lamina of the nasals, and (4) an anterior projection of the prefrontal is present. All species of Helicops with available skull descriptions and Pseudoeryx plicatilis share three features: (1) A vertical lamina of the nasal with a notch, (2) a single foramen rotundum, and (3) the presence of a ventral projection of the transverse crista of the basioccipital. Finally, we found small, paired parietal foramina in most of the dipsadids studied here, which are filled with a Sudan-Black-positive tissue of possible nervous origin.
Facultad de Ciencias Naturales y Museo
Instituto de Limnología "Dr. Raúl A. Ringuelet"
description We here describe the skull in four species of the three genera of the tribe Hydropsini (Serpentes: Dipsadidae: Xenodontinae): Helicops infrataeniatus, H. leopardinus, Hydrops caesurus and Pseudoeryx plicatilis. We compare them with several genera of Dipsadidae. We found that the unpaired foramen on the parabasisphenoid with anterior position is the only skull feature shared by all Hydropsini genera. This feature also occurs in semi-aquatic (Erythrolamphrus semiaureus) and fully-aquatic (Farancia abacura) dipsadids. All species of Hydrops with available skull descriptions and Pseudoeryx plicatilis share four features: (1) The anterior border of the angular is higher than the posterior border of the splenial, (2) the vomerine processes of the premaxilla are long, (3) the ascending process of the premaxilla overlaps the horizontal lamina of the nasals, and (4) an anterior projection of the prefrontal is present. All species of Helicops with available skull descriptions and Pseudoeryx plicatilis share three features: (1) A vertical lamina of the nasal with a notch, (2) a single foramen rotundum, and (3) the presence of a ventral projection of the transverse crista of the basioccipital. Finally, we found small, paired parietal foramina in most of the dipsadids studied here, which are filled with a Sudan-Black-positive tissue of possible nervous origin.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/102831
url http://sedici.unlp.edu.ar/handle/10915/102831
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/22227
info:eu-repo/semantics/altIdentifier/issn/1827-9643
info:eu-repo/semantics/altIdentifier/doi/10.13128/Acta_Herpetol-12988
info:eu-repo/semantics/altIdentifier/hdl/11336/22227
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1-14
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1842260403382386688
score 13.13397