Mostrar el registro sencillo del ítem

dc.contributor.author
Olivero, Eduardo Bernardo  
dc.contributor.author
Medina, Francisco Alberto  
dc.date.available
2020-01-16T20:37:16Z  
dc.date.issued
2000-01  
dc.identifier.citation
Olivero, Eduardo Bernardo; Medina, Francisco Alberto; Patterns of Late Cretaceous ammonite biogeography in southern high latitudes: The family Kossmaticeratidae in Antarctica; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 21; 2-3; 1-2000; 269-279  
dc.identifier.issn
0195-6671  
dc.identifier.uri
http://hdl.handle.net/11336/94988  
dc.description.abstract
A refined biostratigraphy of the Antarctic kossmaticeratids from the James Ross Basin is contrasted against other Upper Cretaceous sections around southern Gondwana to inspect for possible biogeographic patterns. In the 3-km-thick Marambio Group two major unconformities are recognized at the base of the upper Campanian and Maastrichtian, respectively. The unconformities divide the succession into a Santonian-lower Campanian Sequence (NS); an upper Campanian-lower Maastrichtian Sequence (NGS); and a Maastrichtian-Danian Sequence (MGS). Natalites in the NS; Neograhamites-Gunnarites in the NGS; and Maorites-Grossouvrites in the MGS are the most abundant kossmaticeratid ammonites, represented in parts by hundreds or thousands of specimens. Comparison of the Antarctic fauna with that of eastern South Africa, Madagascar, southern India, Australia, New Zealand and southern South America suggests three diversification phases for the Kossmaticeratinae and Brahmaitinae, occurring in different places at different times in southern Gondwana. Early diversification of the Kossmaticeratinae started in the Santonian of eastern Gondwana and continued into the early Campanian of southern high latitudes. Five kossmaticeratid genera, including the relatively long-ranging Maorites and Grossouvrites, and a low-endemic ammonite fauna are recorded. The NS/NGS unconformity marks a major faunal change and the early disappearance in Antarctica of several mollusc groups that are known to range into the Maastrichtian in lower latitudes. Within the NGS, a new late Campanian-early Maastrichtian diversification phase took place in southern high latitudes and five Kossmaticeratinae, mostly endemic to the Weddellian Province, were added. Finally, the Maastrichtian NGS/MGS unconformity marks a drastic reduction of Weddellian Kossmaticeratinae, with only Grossouvrites and Maorites reaching the topmost Maastrichtian in Antarctica. By contrast, the Maastrichtian of eastern Gondwana saw a final diversification phase, with three new Brahmaitinae (present also in the Northern Hemisphere) and the persistence of five Campanian-early Maastrichtian Weddellian Kossmaticeratinae. The pattern of successive low endemism in the early Campanian NS, earlier exclusion of lower latitude Maastrichtian groups and higher endemism in the late Campanian-Maastrichtian NGS, and drastic diversity decrease in the Maastrichtian MGS, is consistent with known calcareous microfossil biogeography and long-term cooling in southern high latitudes. During the final Maastrichtian diversification, the kossmaticeratids spread toward lower latitudes as a stenothermal group of ammonites moving toward their preferred seawater temperature.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Academic Press Ltd - Elsevier Science Ltd  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
AMMONITES  
dc.subject
ANTARCTICA  
dc.subject
BIOGEOG RAPHY  
dc.subject
BIOSTRATIGRAPHY  
dc.subject
CAMPANIAN  
dc.subject
JAMES ROSS BASIN  
dc.subject
KOSSMATICERATIDAE  
dc.subject
LATE CRETACEOUS  
dc.subject
MAASTRICHTIAN  
dc.subject
SANTONIAN  
dc.subject
SOUTHERN GONDWANA  
dc.subject.classification
Geología  
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Patterns of Late Cretaceous ammonite biogeography in southern high latitudes: The family Kossmaticeratidae in Antarctica  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-01-15T19:20:32Z  
dc.journal.volume
21  
dc.journal.number
2-3  
dc.journal.pagination
269-279  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Olivero, Eduardo Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina  
dc.description.fil
Fil: Medina, Francisco Alberto. Centro de Investigaciones En Recursos Geológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.journal.title
Cretaceous Research  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0195667199901921  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1006/cres.1999.0192