Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina

Here we describe Diuqin lechiguanae gen. et sp. nov., a new unenlagiine taxon from the Upper Cretaceous (Santonian) Bajo de la Carpa Formation of the Neuquén Basin of Neuquén Province in northern Patagonia, Argentina that fills a substantial stratigraphic gap in the fossil record of these theropods....

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Autores principales: Porfiri, Juan D, Baiano, Mattia Antonio, Diniz Dos Santos, Domenica, Gianechini, Federico Abel, Pittman, Michael, Lamanna, Matthew C.
Formato: Articulo article acceptedVersion
Lenguaje:Inglés
Publicado: Springer 2024
Materias:
Unenlagiinae
Dromaeosauridae
Cretaceous
Bajo de la Carpa Formation
Patagonia
South America
Biostratigraphy
Phylogeny
Paleoecology
Megaraptoridae
Ciencias de la Tierra y Medio Ambiente
Acceso en línea:https://rdi.uncoma.edu.ar/handle/uncomaid/18958
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Repositorio Institucional UNCo de Universidad Nacional del Comahue
id I22-R178-uncomaid-18958
record_format dspace
spelling I22-R178-uncomaid-189582025-09-03T16:00:19Z Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina Porfiri, Juan D Baiano, Mattia Antonio Diniz Dos Santos, Domenica Gianechini, Federico Abel Pittman, Michael Lamanna, Matthew C. Unenlagiinae Dromaeosauridae Cretaceous Bajo de la Carpa Formation Patagonia South America Biostratigraphy Phylogeny Paleoecology Megaraptoridae Ciencias de la Tierra y Medio Ambiente Here we describe Diuqin lechiguanae gen. et sp. nov., a new unenlagiine taxon from the Upper Cretaceous (Santonian) Bajo de la Carpa Formation of the Neuquén Basin of Neuquén Province in northern Patagonia, Argentina that fills a substantial stratigraphic gap in the fossil record of these theropods. Although known only from a very incomplete postcranial skeleton, the preserved bones of Diuqin differ from corresponding elements in other unenlagiines, justifying the erection of the new taxon. Moreover, in several morphological aspects, the humerus of Diuqin appears intermediate between those of geologically older unenlagiines from the Neuquén Basin (e.g., Unenlagia spp. from the Turonian–Coniacian Portezuelo Formation) and that of the stratigraphically younger, larger-bodied Austroraptor cabazai from the Campanian–Maastrichtian Allen Formation. Consequently, the morphology of the new taxon appears to indicate a transitional stage in unenlagiine evolution. Phylogenetic analysis recovers Diuqin as a paravian with multiple plausible systematic positions, but the strongest affinity is with Unenlagiinae. The humerus of the new form exhibits subcircular punctures near its distal end that are interpreted as feeding traces most likely left by a conical-toothed crocodyliform, mammal, or theropod, the latter potentially corresponding to a megaraptorid or another unenlagiine individual. Thus, in addition to filling important morphological and temporal gaps in unenlagiine evolutionary history, the new taxon also offers information relating to the paleoecology of these theropods. Fil: Porfiri, Juan D. Universidad Nacional del Comahue. Centro Paleontologico Lago Barreales; Argentina. Fil: Baiano, Mattia Antonio. Provincia del Neuquén. Municipalidad de Villa El Chocón. Museo Paleontológico "Ernesto Bachmann"; Argentina. Fil: Baiano, Mattia Antonio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Diniz Dos Santos, Domenica. Universidad Nacional del Comahue. Museo de Geología y Paleontología; Argentina. Fil: Gianechini, Federico Abel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico. San Luis; Argentina. Fil: Gianechini, Federico Abel. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales; Argentina. Fil: Pittman, Michael. The Chinese University of Hong Kong; China. Fil: Lamanna, Matthew C.. Carnegie Museum of Natural History; Estados Unidos. 2024 2025-08-27T15:47:10Z 2025-08-27T15:47:10Z Articulo article acceptedVersion 2730-7182 https://rdi.uncoma.edu.ar/handle/uncomaid/18958 eng https://doi.org/10.1186/s12862-024-02247-w Atribución-NoComercial-CompartirIgual 4.0 https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf pp. 2-22 application/pdf Springer BMC Ecology and Evolution
institution Universidad Nacional del Comahue
institution_str I-22
repository_str R-178
collection Repositorio Institucional UNCo
language Inglés
topic Unenlagiinae
Dromaeosauridae
Cretaceous
Bajo de la Carpa Formation
Patagonia
South America
Biostratigraphy
Phylogeny
Paleoecology
Megaraptoridae
Ciencias de la Tierra y Medio Ambiente
spellingShingle Unenlagiinae
Dromaeosauridae
Cretaceous
Bajo de la Carpa Formation
Patagonia
South America
Biostratigraphy
Phylogeny
Paleoecology
Megaraptoridae
Ciencias de la Tierra y Medio Ambiente
Porfiri, Juan D
Baiano, Mattia Antonio
Diniz Dos Santos, Domenica
Gianechini, Federico Abel
Pittman, Michael
Lamanna, Matthew C.
Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina
topic_facet Unenlagiinae
Dromaeosauridae
Cretaceous
Bajo de la Carpa Formation
Patagonia
South America
Biostratigraphy
Phylogeny
Paleoecology
Megaraptoridae
Ciencias de la Tierra y Medio Ambiente
description Here we describe Diuqin lechiguanae gen. et sp. nov., a new unenlagiine taxon from the Upper Cretaceous (Santonian) Bajo de la Carpa Formation of the Neuquén Basin of Neuquén Province in northern Patagonia, Argentina that fills a substantial stratigraphic gap in the fossil record of these theropods. Although known only from a very incomplete postcranial skeleton, the preserved bones of Diuqin differ from corresponding elements in other unenlagiines, justifying the erection of the new taxon. Moreover, in several morphological aspects, the humerus of Diuqin appears intermediate between those of geologically older unenlagiines from the Neuquén Basin (e.g., Unenlagia spp. from the Turonian–Coniacian Portezuelo Formation) and that of the stratigraphically younger, larger-bodied Austroraptor cabazai from the Campanian–Maastrichtian Allen Formation. Consequently, the morphology of the new taxon appears to indicate a transitional stage in unenlagiine evolution. Phylogenetic analysis recovers Diuqin as a paravian with multiple plausible systematic positions, but the strongest affinity is with Unenlagiinae. The humerus of the new form exhibits subcircular punctures near its distal end that are interpreted as feeding traces most likely left by a conical-toothed crocodyliform, mammal, or theropod, the latter potentially corresponding to a megaraptorid or another unenlagiine individual. Thus, in addition to filling important morphological and temporal gaps in unenlagiine evolutionary history, the new taxon also offers information relating to the paleoecology of these theropods.
format Articulo
article
acceptedVersion
author Porfiri, Juan D
Baiano, Mattia Antonio
Diniz Dos Santos, Domenica
Gianechini, Federico Abel
Pittman, Michael
Lamanna, Matthew C.
author_facet Porfiri, Juan D
Baiano, Mattia Antonio
Diniz Dos Santos, Domenica
Gianechini, Federico Abel
Pittman, Michael
Lamanna, Matthew C.
author_sort Porfiri, Juan D
title Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina
title_short Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina
title_full Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina
title_fullStr Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina
title_full_unstemmed Diuqin lechiguanae gen. et sp. nov., a new unenlagiine (Theropoda: Paraves) from the Bajo de la Carpa Formation (Neuquén Group, Upper Cretaceous) of Neuquén Province, Patagonia, Argentina
title_sort diuqin lechiguanae gen. et sp. nov., a new unenlagiine (theropoda: paraves) from the bajo de la carpa formation (neuquén group, upper cretaceous) of neuquén province, patagonia, argentina
publisher Springer
publishDate 2024
url https://rdi.uncoma.edu.ar/handle/uncomaid/18958
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