A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe

Abstract A characteristic fauna of dinosaurs and other vertebrates inhabited the end-Cretaceous European archipelago, some of which were dwarves or had other unusual features likely related to their insular habitats. Little is known, however, about the contemporary theropod dinosaurs, as they are re...

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Autores principales: Albert G. Sellés, Bernat Vila, Stephen L. Brusatte, Philip J. Currie, Àngel Galobart
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/7bf2e5b52fbb49378fa0448013343ea1
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spelling oai:doaj.org-article:7bf2e5b52fbb49378fa0448013343ea12021-12-02T13:20:02ZA fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe10.1038/s41598-021-83745-52045-2322https://doaj.org/article/7bf2e5b52fbb49378fa0448013343ea12021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83745-5https://doaj.org/toc/2045-2322Abstract A characteristic fauna of dinosaurs and other vertebrates inhabited the end-Cretaceous European archipelago, some of which were dwarves or had other unusual features likely related to their insular habitats. Little is known, however, about the contemporary theropod dinosaurs, as they are represented mostly by teeth or other fragmentary fossils. A new isolated theropod metatarsal II, from the latest Maastrichtian of Spain (within 200,000 years of the mass extinction) may represent a jinfengopterygine troodontid, the first reported from Europe. Comparisons with other theropods and phylogenetic analyses reveal an autapomorphic foramen that distinguishes it from all other troodontids, supporting its identification as a new genus and species, Tamarro insperatus. Bone histology shows that it was an actively growing subadult when it died but may have had a growth pattern in which it grew rapidly in early ontogeny and attained a subadult size quickly. We hypothesize that it could have migrated from Asia to reach the Ibero-Armorican island no later than Cenomanian or during the Maastrichtian dispersal events.Albert G. SellésBernat VilaStephen L. BrusattePhilip J. CurrieÀngel GalobartNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Albert G. Sellés
Bernat Vila
Stephen L. Brusatte
Philip J. Currie
Àngel Galobart
A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe
description Abstract A characteristic fauna of dinosaurs and other vertebrates inhabited the end-Cretaceous European archipelago, some of which were dwarves or had other unusual features likely related to their insular habitats. Little is known, however, about the contemporary theropod dinosaurs, as they are represented mostly by teeth or other fragmentary fossils. A new isolated theropod metatarsal II, from the latest Maastrichtian of Spain (within 200,000 years of the mass extinction) may represent a jinfengopterygine troodontid, the first reported from Europe. Comparisons with other theropods and phylogenetic analyses reveal an autapomorphic foramen that distinguishes it from all other troodontids, supporting its identification as a new genus and species, Tamarro insperatus. Bone histology shows that it was an actively growing subadult when it died but may have had a growth pattern in which it grew rapidly in early ontogeny and attained a subadult size quickly. We hypothesize that it could have migrated from Asia to reach the Ibero-Armorican island no later than Cenomanian or during the Maastrichtian dispersal events.
format article
author Albert G. Sellés
Bernat Vila
Stephen L. Brusatte
Philip J. Currie
Àngel Galobart
author_facet Albert G. Sellés
Bernat Vila
Stephen L. Brusatte
Philip J. Currie
Àngel Galobart
author_sort Albert G. Sellés
title A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe
title_short A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe
title_full A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe
title_fullStr A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe
title_full_unstemmed A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe
title_sort fast-growing basal troodontid (dinosauria: theropoda) from the latest cretaceous of europe
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/7bf2e5b52fbb49378fa0448013343ea1
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