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First record of Procariama simplex Rovereto, 1914 (Phorusrhacidae, Psilopterinae) in the Cerro Azul Formation (upper Miocene) of La Pampa Province; remarks on its anatomy, palaeogeography and chronological range

2012; Taylor & Francis; Volume: 36; Issue: 2 Linguagem: Inglês

10.1080/03115518.2011.597657

1752-0754

Raúl I. Vezzosi,

Plant and animal studies

Abstract Vezzosi, R.I., June 2012. First record of Procariama simplex Rovereto, 1914 (Phorusrhacidae, Psilopterinae) in the Cerro Azul Formation (upper Miocene) of La Pampa Province; remarks on its anatomy, palaeogeography and chronological range. Alcheringa, 157–169. ISSN 0311-5518. New records of Procariama simplex in central and northwestern Argentina are reported. The fossil material includes mandibular bones, cervical vertebrae and several elements of the fore and hindlimbs. After an exhaustive comparison of anatomical characters and morphometric analysis, the fossil specimens are assigned to the psilopterine Procariama simplex. The specimen from La Pampa Province represents the first record of a psilopterine in this central region of Argentina and derives from upper Miocene sediments of the Cerro Azul Formation. Lithological features and biostratigraphical data allow the host bed to be assigned to the Huayquerian faunal stage (late Miocene). The La Pampa record broadens the geographical distribution of Procariama simplex, which was previously restricted to northwestern Argentina. Raúl Ignacio Vezzosi [vezzosiraul@gmail.com], Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción CICYTTP-CONICET, Materi y España s/n (3105), Diamante, Entre Ríos, Argentina. Received 1.4.2011, revised 28.5.2011, accepted 14.6.2011. Key words: Procariama simplex phorusrhacid birdpredatorgroundbirdlate MioceneHuayquerianLa PampaArgentina Acknowledgements The author thanks Alejandro Dondas who collected the Pampean specimen and permitted its study, and provided additional information. Curatorial personnel of the following institutions granted access to specimens: MLP, MACN, MUCyFA, MNHN, FMNH, IGMJ, MPM, PVL. Andrés Rinderknecht and Washington Jones are thanked for sending photographs of the Uruguayan specimens. Jorge Noriega critically reviewed a preliminary version and greatly improved this paper. Finally, the author thanks the reviewers H. Alvarenga and R. Chandler for special discussions on phorusrhacids and psilopterines.