A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons
Antarctoboenus carlinii nov. gen. nov. sp. is a large-sized falconiform bird from the La Meseta Formation (Lower Eocene) at Seymour (Marambio) Island, West Antarctica. The holotypical tarsometatarsus was originally assigned to Falconidae and its affinities to Polyborinae were pointed out. Detailed o...
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Online Access: | http://hdl.handle.net/11336/54190 |
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ftconicet:oai:ri.conicet.gov.ar:11336/54190 2023-10-09T21:46:11+02:00 A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons Ein der Stammgruppe Falconidae angehörender Vogel aus dem Untereozän der Antarktis und die frühe südliche Radiation der Falken Cenizo, Marcos Noriega, Jorge Ignacio Reguero, Marcelo Alfredo application/pdf http://hdl.handle.net/11336/54190 eng eng Wiley Blackwell Publishing, Inc info:eu-repo/semantics/altIdentifier/doi/10.1007/s10336-015-1316-0 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10336-015-1316-0 http://hdl.handle.net/11336/54190 Cenizo, Marcos; Noriega, Jorge Ignacio; Reguero, Marcelo Alfredo; A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons; Wiley Blackwell Publishing, Inc; Journal Fur Ornithologie; 157; 3; 7-2016; 885-894 1519-888X CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTOBOENUS CARLINII FALCONIFORMES FOSSIL BIRD PALEOGENE SEYMOUR ISLAND STEM LINEAGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s10336-015-1316-0 2023-09-24T18:50:32Z Antarctoboenus carlinii nov. gen. nov. sp. is a large-sized falconiform bird from the La Meseta Formation (Lower Eocene) at Seymour (Marambio) Island, West Antarctica. The holotypical tarsometatarsus was originally assigned to Falconidae and its affinities to Polyborinae were pointed out. Detailed osteological and comparative analyses of the Antarctic specimen allowed recognition of the new taxon as a member of stem group Falconidae, i.e. it is supposed to belong to the early radiation of the falconiform lineage. Antarctoboenus carlinii is distinguished from members of crown group Falconidae by having a very shallow sulcus extensorius, a large foramen vasculare distale, an undistinguishable tendinal attachment for the m. adductor digiti II, and short trochlea metatarsi II, among its main diagnostic characters. Purported phylogenetic relationships between A. carlinii and Polyborinae are based on plesiomorphic characters retained in the tarsometatarsus of the latter clade. Our conclusions reinforce the hypothesis about the Neotropical or Austral origin of Falconidae supported by previous molecular phylogenies. Antarctoboenus carlinii nov. gen. nov. sp. ist ein großer falkenartiger Vogel aus der La Meseta Formation (Untereozän) auf der Seymour-Insel (Isla Marambio) in der Westantarktis. Der Holotyp-Tarsometatarsus wurde ursprünglich den Falconidae (Falkenartigen) zugeordnet, und seine Ähnlichkeiten mit den Polyborinae (Geierfalken) wurden hervorgehoben. Detaillierte osteologische und vergleichende Analysen des Antarktis-Exemplars ermöglichten es, das neue Taxon als ein Mitglied der Stammgruppe Falconidae anzuerkennen, d.h. es gehört vermutlich der frühen Radiation der Falconiformes-Abstammungslinie an. Antarctoboenus carlinii unterscheidet sich von den Mitgliedern der Kronengruppe Falconidae durch mehrere diagnostische Merkmale, u.a. einen sehr flachen sulcus extensorius, ein großes foramen vasculare distale, einen undeutlichen Sehnenansatz für den m. adductor digiti II und kurze trochlea metatarsi II. Angebliche ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Antarktis* Seymour Island West Antarctica CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic The Antarctic Austral West Antarctica Seymour ENVELOPE(-56.767,-56.767,-64.283,-64.283) Seymour Island ENVELOPE(-56.750,-56.750,-64.283,-64.283) Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) isla Marambio ENVELOPE(-56.635,-56.635,-64.239,-64.239) Falken ENVELOPE(14.519,14.519,67.154,67.154) Seymour-Insel ENVELOPE(-56.750,-56.750,-64.283,-64.283) Journal of Ornithology 157 3 885 894 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTOBOENUS CARLINII FALCONIFORMES FOSSIL BIRD PALEOGENE SEYMOUR ISLAND STEM LINEAGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTOBOENUS CARLINII FALCONIFORMES FOSSIL BIRD PALEOGENE SEYMOUR ISLAND STEM LINEAGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Cenizo, Marcos Noriega, Jorge Ignacio Reguero, Marcelo Alfredo A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons |
topic_facet |
ANTARCTOBOENUS CARLINII FALCONIFORMES FOSSIL BIRD PALEOGENE SEYMOUR ISLAND STEM LINEAGE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Antarctoboenus carlinii nov. gen. nov. sp. is a large-sized falconiform bird from the La Meseta Formation (Lower Eocene) at Seymour (Marambio) Island, West Antarctica. The holotypical tarsometatarsus was originally assigned to Falconidae and its affinities to Polyborinae were pointed out. Detailed osteological and comparative analyses of the Antarctic specimen allowed recognition of the new taxon as a member of stem group Falconidae, i.e. it is supposed to belong to the early radiation of the falconiform lineage. Antarctoboenus carlinii is distinguished from members of crown group Falconidae by having a very shallow sulcus extensorius, a large foramen vasculare distale, an undistinguishable tendinal attachment for the m. adductor digiti II, and short trochlea metatarsi II, among its main diagnostic characters. Purported phylogenetic relationships between A. carlinii and Polyborinae are based on plesiomorphic characters retained in the tarsometatarsus of the latter clade. Our conclusions reinforce the hypothesis about the Neotropical or Austral origin of Falconidae supported by previous molecular phylogenies. Antarctoboenus carlinii nov. gen. nov. sp. ist ein großer falkenartiger Vogel aus der La Meseta Formation (Untereozän) auf der Seymour-Insel (Isla Marambio) in der Westantarktis. Der Holotyp-Tarsometatarsus wurde ursprünglich den Falconidae (Falkenartigen) zugeordnet, und seine Ähnlichkeiten mit den Polyborinae (Geierfalken) wurden hervorgehoben. Detaillierte osteologische und vergleichende Analysen des Antarktis-Exemplars ermöglichten es, das neue Taxon als ein Mitglied der Stammgruppe Falconidae anzuerkennen, d.h. es gehört vermutlich der frühen Radiation der Falconiformes-Abstammungslinie an. Antarctoboenus carlinii unterscheidet sich von den Mitgliedern der Kronengruppe Falconidae durch mehrere diagnostische Merkmale, u.a. einen sehr flachen sulcus extensorius, ein großes foramen vasculare distale, einen undeutlichen Sehnenansatz für den m. adductor digiti II und kurze trochlea metatarsi II. Angebliche ... |
format |
Article in Journal/Newspaper |
author |
Cenizo, Marcos Noriega, Jorge Ignacio Reguero, Marcelo Alfredo |
author_facet |
Cenizo, Marcos Noriega, Jorge Ignacio Reguero, Marcelo Alfredo |
author_sort |
Cenizo, Marcos |
title |
A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons |
title_short |
A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons |
title_full |
A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons |
title_fullStr |
A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons |
title_full_unstemmed |
A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons |
title_sort |
stem falconid bird from the lower eocene of antarctica and the early southern radiation of the falcons |
publisher |
Wiley Blackwell Publishing, Inc |
url |
http://hdl.handle.net/11336/54190 |
long_lat |
ENVELOPE(-56.767,-56.767,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-56.635,-56.635,-64.239,-64.239) ENVELOPE(14.519,14.519,67.154,67.154) ENVELOPE(-56.750,-56.750,-64.283,-64.283) |
geographic |
Antarctic The Antarctic Austral West Antarctica Seymour Seymour Island Marambio isla Marambio Falken Seymour-Insel |
geographic_facet |
Antarctic The Antarctic Austral West Antarctica Seymour Seymour Island Marambio isla Marambio Falken Seymour-Insel |
genre |
Antarc* Antarctic Antarctica Antarktis* Seymour Island West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Antarktis* Seymour Island West Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10336-015-1316-0 info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10336-015-1316-0 http://hdl.handle.net/11336/54190 Cenizo, Marcos; Noriega, Jorge Ignacio; Reguero, Marcelo Alfredo; A stem falconid bird from the Lower Eocene of Antarctica and the early southern radiation of the falcons; Wiley Blackwell Publishing, Inc; Journal Fur Ornithologie; 157; 3; 7-2016; 885-894 1519-888X CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s10336-015-1316-0 |
container_title |
Journal of Ornithology |
container_volume |
157 |
container_issue |
3 |
container_start_page |
885 |
op_container_end_page |
894 |
_version_ |
1779321827512811520 |