Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina

The penguin skeleton studied here constitutes the fourth partial skeleton found in Patagonia, and the third one with an associated humerus and tarsometatarsus. The finding of this partial skeleton identified with certainty as Palaeospheniscus patagonicus Moreno and Mercerat, 1891 (Aves, Spheniscifor...

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Autores principales:	Castro, Liliana Norma, Scasso, Roberto Adrian
Publicado:	2008
Materias:	abundance fossil fossil record Miocene new record sandstone seabird skeletal remains taxonomy Argentina Chubut Patagonia South America Aves Chondrichthyes Mollusca Ostreidae Spheniscidae Sphenisciformes Vertebrata
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223360_v82_n3_p565_Hospitaleche http://hdl.handle.net/20.500.12110/paper_00223360_v82_n3_p565_Hospitaleche
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00223360_v82_n3_p565_Hospitaleche
record_format	dspace
spelling	paper:paper_00223360_v82_n3_p565_Hospitaleche2023-06-08T14:49:48Z Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina Castro, Liliana Norma Scasso, Roberto Adrian abundance fossil fossil record Miocene new record sandstone seabird skeletal remains taxonomy Argentina Chubut Patagonia South America Aves Chondrichthyes Mollusca Ostreidae Spheniscidae Sphenisciformes Vertebrata The penguin skeleton studied here constitutes the fourth partial skeleton found in Patagonia, and the third one with an associated humerus and tarsometatarsus. The finding of this partial skeleton identified with certainty as Palaeospheniscus patagonicus Moreno and Mercerat, 1891 (Aves, Sphenisciformes) allows the first description of elements other than the tarsometatarsus. The material comes from the basal sector of the Gaiman Formation (Early Miocene), located along the Atlantic coast of Chubut Province, south of Rawson city. This unit comprises a succession of shales, fine tuffs, sandstones, tuffaceous sandstones, and coquinas deposited in a shallow marine environment. These beds contain abundant marine vertebrates (sharks, dolphins, rays, birds), mollusk casts, and oyster beds. The skeleton includes: rostrum, two thoracic vertebrae, right coracoid without the distal end, left humerus, right femur, right tarsometatarsus, left fragmentary scapula, left coracoid, left radius without the distal end, proximal portion of left ulna, proximal end of left femur, and preacetabular part of the synsacrum. P. patagonicus would have been a medium-sized penguin weighing about 5 kg that inhabited the breeding colonies established in the nearby Bryn Gwyn area during the early Miocene. Despite the abundance of penguin remains known for Argentina, and the fact that they are among the birds with a better fossil record, this skeleton is an exceptional case. This finding allows a readjustment of the taxonomic criteria applicable to fossil and living species. Copyright © 2008, The Paleontological Society. Fil:Castro, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Scasso, R.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223360_v82_n3_p565_Hospitaleche http://hdl.handle.net/20.500.12110/paper_00223360_v82_n3_p565_Hospitaleche
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	abundance fossil fossil record Miocene new record sandstone seabird skeletal remains taxonomy Argentina Chubut Patagonia South America Aves Chondrichthyes Mollusca Ostreidae Spheniscidae Sphenisciformes Vertebrata
spellingShingle	abundance fossil fossil record Miocene new record sandstone seabird skeletal remains taxonomy Argentina Chubut Patagonia South America Aves Chondrichthyes Mollusca Ostreidae Spheniscidae Sphenisciformes Vertebrata Castro, Liliana Norma Scasso, Roberto Adrian Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina
topic_facet	abundance fossil fossil record Miocene new record sandstone seabird skeletal remains taxonomy Argentina Chubut Patagonia South America Aves Chondrichthyes Mollusca Ostreidae Spheniscidae Sphenisciformes Vertebrata
description	The penguin skeleton studied here constitutes the fourth partial skeleton found in Patagonia, and the third one with an associated humerus and tarsometatarsus. The finding of this partial skeleton identified with certainty as Palaeospheniscus patagonicus Moreno and Mercerat, 1891 (Aves, Sphenisciformes) allows the first description of elements other than the tarsometatarsus. The material comes from the basal sector of the Gaiman Formation (Early Miocene), located along the Atlantic coast of Chubut Province, south of Rawson city. This unit comprises a succession of shales, fine tuffs, sandstones, tuffaceous sandstones, and coquinas deposited in a shallow marine environment. These beds contain abundant marine vertebrates (sharks, dolphins, rays, birds), mollusk casts, and oyster beds. The skeleton includes: rostrum, two thoracic vertebrae, right coracoid without the distal end, left humerus, right femur, right tarsometatarsus, left fragmentary scapula, left coracoid, left radius without the distal end, proximal portion of left ulna, proximal end of left femur, and preacetabular part of the synsacrum. P. patagonicus would have been a medium-sized penguin weighing about 5 kg that inhabited the breeding colonies established in the nearby Bryn Gwyn area during the early Miocene. Despite the abundance of penguin remains known for Argentina, and the fact that they are among the birds with a better fossil record, this skeleton is an exceptional case. This finding allows a readjustment of the taxonomic criteria applicable to fossil and living species. Copyright © 2008, The Paleontological Society.
author	Castro, Liliana Norma Scasso, Roberto Adrian
author_facet	Castro, Liliana Norma Scasso, Roberto Adrian
author_sort	Castro, Liliana Norma
title	Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina
title_short	Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina
title_full	Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina
title_fullStr	Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina
title_full_unstemmed	Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina
title_sort	palaeospheniscus patagonicus (aves, sphenisciformes): new discoveries from the early miocene of argentina
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223360_v82_n3_p565_Hospitaleche http://hdl.handle.net/20.500.12110/paper_00223360_v82_n3_p565_Hospitaleche
work_keys_str_mv	AT castroliliananorma palaeospheniscuspatagonicusavessphenisciformesnewdiscoveriesfromtheearlymioceneofargentina AT scassorobertoadrian palaeospheniscuspatagonicusavessphenisciformesnewdiscoveriesfromtheearlymioceneofargentina
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Palaeospheniscus patagonicus (Aves, Sphenisciformes): New discoveries from the early miocene of Argentina

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