An Elaphrocnemus-like landbird and other avian remains from the late Paleocene of Brazil

• Autorzy: Mayr G. , Alvarenga H. , Clarke J. A.
• Języki publikacji: EN

Abstrakty

EN

We describe a new avian taxon, Itaboravis elaphrocnemoides, gen. et sp. nov., from the late Paleocene fissure fillings of São José de Itaboraí in Brazil. The species is represented by a coracoid and two humeri, which most closely resemble the corresponding elements of the taxon Elaphrocnemus, a proposed stem group representative of the Cariamae from the late Eocene and Oligocene of the Quercy fissure fillings in France. I. elaphrocnemoides is only the second species of small landbird known from the Paleocene of the Southern Hemisphere. It is tentatively classified in the Cariamae, but we also note morphological similarities of the humerus to that of the palaeognathous Tinamidae. We further describe a carpometacarpus, which exhibits a peculiar morphology not found in any other avian taxon. This bone also shares some features with tinamous and is of a size corresponding to that of I. elaphrocnemoides, but cannot be referred to this taxon with confidence. We finally report four morphologically different distal tibiotarsi, one of which may belong to Eutreptodactylus itaboraiensis, the only other small bird described from Itaboraí.

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 2011
• Tom: 56
• Numer: 4
• Opis fizyczny: p.679-684,fig.,ref.

Twórcy

autor

Mayr G.

• Forschungsinstitut Senckenberg, Sektion Ornithologie, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany

autor

Alvarenga H.

• Museu de Historia Natural de Taubate, Rua Juvenal Dias de Carvalho 111, CEP 12070-640, Taubate, SP, Brasil

autor

Clarke J. A.

• Department of Geological Sciences, University of Texas at Austin, Austin, TX 78712, USA

Bibliografia

• Alvarenga, H.M.F. 1983. Uma ave ratitae do Paleoceno Brasileiro: bacia calcária de Itaboraí, Estado do Rio de Janeiro, Brasil. Boletim do Museu Nacional, Nova Série, Geologia 41: 1–8.
• Alvarenga, H.M.F. 1985. Um novo Psilopteridae (Aves: Gruiformes) dos sedimentos Terciários de Itaboraí, Rio de Janeiro, Brasil. In: D.A. Campos, C.S. Ferreira, I.M. Brito, and C.F. Viana, (eds.), Anais do VIII Congresso Brasileiro de Paleontologia. MME−DNPM, Série Geologia 27, Paleontologia, Estratigrafia 2: 17–20.
• Baird, R.F. and Vickers−Rich, P. 1997. Eutreptodactylus itaboraiensis gen. et. sp. nov., an early cuckoo (Aves: Cuculiformes) from the Late Paleocene of Brazil. Alcheringa 21: 123–127.
• Ballmann, P. 1969. Die Vögel aus der altburdigalen Spaltenfüllung von Wintershof (West) bei Eichstätt in Bayern. Zitteliana 1: 5–60.
• Baumel, J.J. and Witmer, L.M. 1993. Osteologia. In: J.J. Baumel, A.S. King, J.E. Breazile, H.E. Evans, and J.C. Vanden Berge (eds.), Handbook of Avian Anatomy: Nomina Anatomica Avium. Publications of the Nuttall Ornithological Club 23: 45–132.
• Clarke, J.A. 2004. Morphology, phylogenetic taxonomy, and systematics of Ichthyornis and Apatornis(Avialae: Ornithurae). Bulletin of the American Museum of Natural History 286: 1–179.
• Ladevèze, S. 2004. Metatherian petrosals from the late Paleocene of Itaboraí, Brazil, and their phylogenetic implications. Journal of Vertebrate Paleontology 24: 202–213.
• Mayr, G. 2007. The birds from the Paleocene fissure filling of Walbeck (Germany). Journal of Vertebrate Paleontology 27: 394–408.
• Mayr, G. 2009. Paleogene Fossil Birds. 262 pp. Springer, Heidelberg.
• Mayr, G. and Clarke, J. 2003. The deep divergences of neornithine birds: a phylogenetic analysis of morphological characters. Cladistics 19: 527–553.
• Mayr, G. and Mourer−Chauviré, C. 2006. Three−dimensionally preserved cranial remains of Elaphrocnemus (Aves, Cariamae) from the Paleogene Quercy fissure fillings in France. Neues Jahrbuch für Geologie und Paläontologie, Monatshefte 2006 (1): 15–27.
• Mayr, G. and Mourer−Chauviré, C. 2008. The peculiar scapula of the late Eocene Elaphrocnemus phasianus Milne−Edwards, 1892 (Aves, Cariamae). Senckenbergiana lethaea 88: 195–198.
• Meyers, R.A. 1996. Morphology of the antebrachial musculature of the American kestrel, Falco sparverius (Aves). Annals of Anatomy 178: 49–60.
• Mourer−Chauviré, C. 1983. Les Gruiformes (Aves) des Phosphorites du Quercy (France). 1. Sous−ordre Cariamae (Cariamidae et Phorusrhacidae). Systématique et biostratigraphie. Palaeovertebrata 13: 83–143.
• Mourer−Chauviré, C. 1989. Les Caprimulgiformes et les Coraciiformes de l’Éocène et de l’Oligocène des Phosphorites du Quercy et description de deux genres nouveaux de Podargidae et Nyctibiidae. In: H. Ouellet (ed.), Acta XIX Congressus Internationalis Ornithologici, 2047–2055. University of Ottawa Press, Ottawa.
• Mourer−Chauviré, C. 1999. Les relations entre les avifaunes du Tertiaire inférieur d’Europe et d’Amérique du Sud. Bulletin de la Société géologique de France 170: 85–90.
• Paula−Couto, C. 1952a. Fossil mammals from the beginning of the Cenozoic in Brazil. Marsupialia: Polydolopidae and Borhyaenidae. American Museum Novitates 1559: 1–27.
• Paula−Couto, C. 1952b. Fossil mammals from the beginning of the Cenozoic in Brazil. Marsupialia: Didelphidae. American Museum Novitates 1567: 1–26.
• Sant’Anna, L.G., Riccomini, C., Rodrigues−Francisco, B.H., Sial, A.N., Carvalho, M.D., and Moura, C.A.V. 2004. The Paleocene travertine system of the Itaboraí basin, Southeastern Brazil. Journal of South American Earth Sciences 18: 11–25.]
• Stegmann, B. 1965. Funktionell bedingte Eigenheiten am Metacarpus des Vogelflügels. Journal für Ornithologie 106: 179–189.