Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin

Paleobiogeographic affinities of Cretaceous marine invertebrates of the Neuquén Basin are analyzed based on a recent systematic revision. Two different marine intervals are considered. The first one corresponds to the Berriasian-Early Barremian when the basin was connected to the Pacific Ocean throu...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Aguirre-Urreta, M.B., Casadío, S., Cichowolski, M., Lazo, D.G., Rodríguez, D.L.
Formato: JOUR
Materias:
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00027014_v45_n3_p591_AguirreUrreta
Aporte de:
id todo:paper_00027014_v45_n3_p591_AguirreUrreta
record_format dspace
spelling todo:paper_00027014_v45_n3_p591_AguirreUrreta2023-10-03T13:53:04Z Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin Aguirre-Urreta, M.B. Casadío, S. Cichowolski, M. Lazo, D.G. Rodríguez, D.L. Andean Decapod crustaceans Echinoids Endemic Mollusks Tethyan Wedellian Berriasian bivalve Cretaceous echinoderm endemic species global warming island arc paleobiogeography paleotemperature replacement taxonomy Tethys Andes Argentina Neuquen Basin South America Ammonoidea Bivalvia Crustacea Echinoida Invertebrata Mollusca Nautilida Weddellia Paleobiogeographic affinities of Cretaceous marine invertebrates of the Neuquén Basin are analyzed based on a recent systematic revision. Two different marine intervals are considered. The first one corresponds to the Berriasian-Early Barremian when the basin was connected to the Pacific Ocean through a volcanic arc. The second is restricted to the Maastrichtian, when the basin was open to the Atlantic Ocean. During the first, the nautilids are monospecific showing Andean affinities. The ammonoids are represented by six families of tethyan affinities. Twenty genera and subgenera are replaced in time through immigration events, alternating between Andean and pandemic forms. The bivalve fauna has tethyan affinities, although a significant number of taxa are endemic. The decapods show similarities with others from England and Germany. The echinoids are represented by seven genera of different paleogeographic distribution, including endemic or Andean forms and others with a nearly cosmopolitan distribution. Maastrichtian mollusk faunas show affinities with the Weddellian Province. Near the K/P boundary and during the Danian the weddellian forms were replaced by warm-waters taxa from northern Brazil, the Caribbean and northern Africa. It is proposed that during the Early Cretaceous, paleotemperatures in the Neuquén Basin were similar to those in the Tethys, but probably not so high, whereas for the Maastrichtian, a global cooling would have caused the northern expansion of Weddellian forms. Finally, around the K/P boundary, a new global warming probably enhances the replacement of these faunas by other typical from low latitudes. © Asociación Paleontológica Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00027014_v45_n3_p591_AguirreUrreta
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Andean
Decapod crustaceans
Echinoids
Endemic
Mollusks
Tethyan
Wedellian
Berriasian
bivalve
Cretaceous
echinoderm
endemic species
global warming
island arc
paleobiogeography
paleotemperature
replacement
taxonomy
Tethys
Andes
Argentina
Neuquen Basin
South America
Ammonoidea
Bivalvia
Crustacea
Echinoida
Invertebrata
Mollusca
Nautilida
Weddellia
spellingShingle Andean
Decapod crustaceans
Echinoids
Endemic
Mollusks
Tethyan
Wedellian
Berriasian
bivalve
Cretaceous
echinoderm
endemic species
global warming
island arc
paleobiogeography
paleotemperature
replacement
taxonomy
Tethys
Andes
Argentina
Neuquen Basin
South America
Ammonoidea
Bivalvia
Crustacea
Echinoida
Invertebrata
Mollusca
Nautilida
Weddellia
Aguirre-Urreta, M.B.
Casadío, S.
Cichowolski, M.
Lazo, D.G.
Rodríguez, D.L.
Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin
topic_facet Andean
Decapod crustaceans
Echinoids
Endemic
Mollusks
Tethyan
Wedellian
Berriasian
bivalve
Cretaceous
echinoderm
endemic species
global warming
island arc
paleobiogeography
paleotemperature
replacement
taxonomy
Tethys
Andes
Argentina
Neuquen Basin
South America
Ammonoidea
Bivalvia
Crustacea
Echinoida
Invertebrata
Mollusca
Nautilida
Weddellia
description Paleobiogeographic affinities of Cretaceous marine invertebrates of the Neuquén Basin are analyzed based on a recent systematic revision. Two different marine intervals are considered. The first one corresponds to the Berriasian-Early Barremian when the basin was connected to the Pacific Ocean through a volcanic arc. The second is restricted to the Maastrichtian, when the basin was open to the Atlantic Ocean. During the first, the nautilids are monospecific showing Andean affinities. The ammonoids are represented by six families of tethyan affinities. Twenty genera and subgenera are replaced in time through immigration events, alternating between Andean and pandemic forms. The bivalve fauna has tethyan affinities, although a significant number of taxa are endemic. The decapods show similarities with others from England and Germany. The echinoids are represented by seven genera of different paleogeographic distribution, including endemic or Andean forms and others with a nearly cosmopolitan distribution. Maastrichtian mollusk faunas show affinities with the Weddellian Province. Near the K/P boundary and during the Danian the weddellian forms were replaced by warm-waters taxa from northern Brazil, the Caribbean and northern Africa. It is proposed that during the Early Cretaceous, paleotemperatures in the Neuquén Basin were similar to those in the Tethys, but probably not so high, whereas for the Maastrichtian, a global cooling would have caused the northern expansion of Weddellian forms. Finally, around the K/P boundary, a new global warming probably enhances the replacement of these faunas by other typical from low latitudes. © Asociación Paleontológica Argentina.
format JOUR
author Aguirre-Urreta, M.B.
Casadío, S.
Cichowolski, M.
Lazo, D.G.
Rodríguez, D.L.
author_facet Aguirre-Urreta, M.B.
Casadío, S.
Cichowolski, M.
Lazo, D.G.
Rodríguez, D.L.
author_sort Aguirre-Urreta, M.B.
title Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin
title_short Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin
title_full Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin
title_fullStr Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin
title_full_unstemmed Paleobiogeographic affinities of the cretaceous invertebrates of the NeuquéN Basin
title_sort paleobiogeographic affinities of the cretaceous invertebrates of the neuquén basin
url http://hdl.handle.net/20.500.12110/paper_00027014_v45_n3_p591_AguirreUrreta
work_keys_str_mv AT aguirreurretamb paleobiogeographicaffinitiesofthecretaceousinvertebratesoftheneuquenbasin
AT casadios paleobiogeographicaffinitiesofthecretaceousinvertebratesoftheneuquenbasin
AT cichowolskim paleobiogeographicaffinitiesofthecretaceousinvertebratesoftheneuquenbasin
AT lazodg paleobiogeographicaffinitiesofthecretaceousinvertebratesoftheneuquenbasin
AT rodriguezdl paleobiogeographicaffinitiesofthecretaceousinvertebratesoftheneuquenbasin
_version_ 1807320700407513088