Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian)
The Pseudofavrella angulatiformis Zone (upper Valanginian) of the Agrio Formation in the Neuquén Basin, Argentina, is characterized exclusively by a complex sequence of neocomitid faunas that are sandwiched between the olcostephanids of the underlying Viluceras permolestus Subzone beneath and the ho...
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2010
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v31_n3_p321_AguirreUrreta http://hdl.handle.net/20.500.12110/paper_01956671_v31_n3_p321_AguirreUrreta |
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paper:paper_01956671_v31_n3_p321_AguirreUrreta2023-06-08T15:20:14Z Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) Aguirre-Urreta, Maria Beatriz Ammonites Argentina Lower Cretaceous Neocomitidae Neuquén Basin Upper Valanginian ammonite Cretaceous fauna fossil record new taxon paleontology sedimentary sequence taxonomy Valanginian Argentina Neuquen Basin Chacantuceras Holcodiscidae Holcoptychites neuquensis Neocomitidae Pseudofavrella angulatiformis The Pseudofavrella angulatiformis Zone (upper Valanginian) of the Agrio Formation in the Neuquén Basin, Argentina, is characterized exclusively by a complex sequence of neocomitid faunas that are sandwiched between the olcostephanids of the underlying Viluceras permolestus Subzone beneath and the holcodiscid faunas of the Holcoptychites neuquensis Zone above (lowermost Hauterivian). Three successive neocomitid genera, Pseudofavrella, Chacantuceras and Decliveites gen. nov., characterize three subzones. Over half the taxa are new: Pseudofavrella robusta, P. sp. nov. 1 and 2, Chacantuceras casanuestraense, Chacantuceras coniunctum, Decliveites crassicostatus, and Decliveites agrioensis. © 2010 Elsevier Ltd. Fil:Aguirre-Urreta, M.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v31_n3_p321_AguirreUrreta http://hdl.handle.net/20.500.12110/paper_01956671_v31_n3_p321_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 |
Ammonites Argentina Lower Cretaceous Neocomitidae Neuquén Basin Upper Valanginian ammonite Cretaceous fauna fossil record new taxon paleontology sedimentary sequence taxonomy Valanginian Argentina Neuquen Basin Chacantuceras Holcodiscidae Holcoptychites neuquensis Neocomitidae Pseudofavrella angulatiformis |
| spellingShingle |
Ammonites Argentina Lower Cretaceous Neocomitidae Neuquén Basin Upper Valanginian ammonite Cretaceous fauna fossil record new taxon paleontology sedimentary sequence taxonomy Valanginian Argentina Neuquen Basin Chacantuceras Holcodiscidae Holcoptychites neuquensis Neocomitidae Pseudofavrella angulatiformis Aguirre-Urreta, Maria Beatriz Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) |
| topic_facet |
Ammonites Argentina Lower Cretaceous Neocomitidae Neuquén Basin Upper Valanginian ammonite Cretaceous fauna fossil record new taxon paleontology sedimentary sequence taxonomy Valanginian Argentina Neuquen Basin Chacantuceras Holcodiscidae Holcoptychites neuquensis Neocomitidae Pseudofavrella angulatiformis |
| description |
The Pseudofavrella angulatiformis Zone (upper Valanginian) of the Agrio Formation in the Neuquén Basin, Argentina, is characterized exclusively by a complex sequence of neocomitid faunas that are sandwiched between the olcostephanids of the underlying Viluceras permolestus Subzone beneath and the holcodiscid faunas of the Holcoptychites neuquensis Zone above (lowermost Hauterivian). Three successive neocomitid genera, Pseudofavrella, Chacantuceras and Decliveites gen. nov., characterize three subzones. Over half the taxa are new: Pseudofavrella robusta, P. sp. nov. 1 and 2, Chacantuceras casanuestraense, Chacantuceras coniunctum, Decliveites crassicostatus, and Decliveites agrioensis. © 2010 Elsevier Ltd. |
| author |
Aguirre-Urreta, Maria Beatriz |
| author_facet |
Aguirre-Urreta, Maria Beatriz |
| author_sort |
Aguirre-Urreta, Maria Beatriz |
| title |
Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) |
| title_short |
Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) |
| title_full |
Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) |
| title_fullStr |
Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) |
| title_full_unstemmed |
Lower Cretaceous ammonites from the Neuquén Basin, Argentina: The neocomitids of the Pseudofavrella angulatiformis Zone (upper Valanginian) |
| title_sort |
lower cretaceous ammonites from the neuquén basin, argentina: the neocomitids of the pseudofavrella angulatiformis zone (upper valanginian) |
| publishDate |
2010 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01956671_v31_n3_p321_AguirreUrreta http://hdl.handle.net/20.500.12110/paper_01956671_v31_n3_p321_AguirreUrreta |
| work_keys_str_mv |
AT aguirreurretamariabeatriz lowercretaceousammonitesfromtheneuquenbasinargentinatheneocomitidsofthepseudofavrellaangulatiformiszoneuppervalanginian |
| _version_ |
1768542549879816192 |