Header

UZH-Logo

Maintenance Infos

A new species of Neosclerocalyptus Paula Couto, 1957 (Xenarthra, Glyptodontidae, Hoplophorinae) from the middle Pleistocene of the Pampean region, Argentina


Zurita, A E; Carlini, A A; Scillato-Yané, G J (2008). A new species of Neosclerocalyptus Paula Couto, 1957 (Xenarthra, Glyptodontidae, Hoplophorinae) from the middle Pleistocene of the Pampean region, Argentina. Geodiversitas, 30(4):779-791.

Abstract

A new species of the genus Neosclerocalyptus Paula Couto, 1957 (= Sclerocalyptus Ameghino, 1891), N. gouldi n. sp.(Cingulata, Glyptodontidae, Hoplophorini) is described. Th is new taxon, comes from the Bonaerian Stage (middle Pleistocene; c. 0.4-0.13 Ma) of San Andrés de Giles, Buenos Aires province, Argentina. Th e type consists mainly of an associated skull, mandible and cephalic shield in an excellent state of preservation. Morphological characters that distinguish the species include:
a) lesser pneumatization and lateral expansion of fronto-nasal sinuses compared to N. paskoensis; b) descending processes of maxillaries and zygomatic arches very robust and with marked ridges; c) lower third of descending processes markedly inclined toward the sagittal plane; d) inclination of the parieto-occipital skull region intermediate between those of Ensenadan and Lujanian forms; e) infraorbital fora mina larger than in N. paskoensis, similar in size to those of N. ornatus; and f) occipital
area less expanded laterally than in N. paskoensis. Th is new taxon completes the chronological distribution of genus Neosclerocalyptus which, until now, included two well-characterized species for the Ensenadan (early Pleistocene: N. pseudornatus and N. ornatus) and one Lujanian (late Pleistocene-early Holocene: N. paskoensis). The Bonaerian species, N. migoyanus, recognized by Ameghino, should be considered as a nomen dubium, due to the lack of diagnostic characters.

Abstract

A new species of the genus Neosclerocalyptus Paula Couto, 1957 (= Sclerocalyptus Ameghino, 1891), N. gouldi n. sp.(Cingulata, Glyptodontidae, Hoplophorini) is described. Th is new taxon, comes from the Bonaerian Stage (middle Pleistocene; c. 0.4-0.13 Ma) of San Andrés de Giles, Buenos Aires province, Argentina. Th e type consists mainly of an associated skull, mandible and cephalic shield in an excellent state of preservation. Morphological characters that distinguish the species include:
a) lesser pneumatization and lateral expansion of fronto-nasal sinuses compared to N. paskoensis; b) descending processes of maxillaries and zygomatic arches very robust and with marked ridges; c) lower third of descending processes markedly inclined toward the sagittal plane; d) inclination of the parieto-occipital skull region intermediate between those of Ensenadan and Lujanian forms; e) infraorbital fora mina larger than in N. paskoensis, similar in size to those of N. ornatus; and f) occipital
area less expanded laterally than in N. paskoensis. Th is new taxon completes the chronological distribution of genus Neosclerocalyptus which, until now, included two well-characterized species for the Ensenadan (early Pleistocene: N. pseudornatus and N. ornatus) and one Lujanian (late Pleistocene-early Holocene: N. paskoensis). The Bonaerian species, N. migoyanus, recognized by Ameghino, should be considered as a nomen dubium, due to the lack of diagnostic characters.

Statistics

Citations

6 citations in Web of Science®
6 citations in Scopus®
Google Scholar™

Downloads

245 downloads since deposited on 29 Jan 2009
24 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Language:English
Date:2008
Deposited On:29 Jan 2009 09:07
Last Modified:06 Dec 2017 16:33
Publisher:Muséum national d'Histoire naturelle, Paris
ISSN:1280-9659
Official URL:http://www.mnhn.fr/museum/front/medias/publication/16895_g08n4a6.pdf

Download

Download PDF  'A new species of Neosclerocalyptus Paula Couto, 1957 (Xenarthra, Glyptodontidae, Hoplophorinae) from the middle Pleistocene of the Pampean region, Argentina'.
Preview
Filetype: PDF
Size: 374kB