Note on new pterosaur remains (Archosauria: Pterodactyloidea) from Cerro La Isla, Atacama region, northern Chile
DOI:
https://doi.org/10.54830/bmnhn.v71.n2.2022.213Keywords:
Pterosauria, Quebrada Monardes Formation, Lower Cretaceous, Atacama DesertAbstract
In this study, new isolated fragmentary pterosaur bones are described from Lower Cretaceous outcrops exposed at Cerro La Isla, a site located approximately 95 km east of Copiapó city, Atacama region, northern Chile. The material consists of a jaw fragment with broken teeth, the caudal portion of a mid-cervical vertebra and the distal portion of a femur. Based on their morphology, the jaw and cervical fragments are assigned to Ctenochasmatidae, a group of pterodactyloid pterosaurs that has been previously reported from this locality, while the femur lacks diagnostic characters that would allow its referral to a more exclusive taxon than Pterodactyloidea indet. This new material confirms the previously proposed presence of ctenochasmatid pterosaurs in the Cretaceous outcrops of Cerro La Isla, and increases the diversity of their skeletal elements discovered at the site.
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Alarcón-Muñoz, J., S. Soto-Acuña, D. Rubilar-Rogers, E. González and L. Codorniú. 2018 . Note on a new locality with pterosaurs (Archosauria: Pterodactyloidea) from the Atacama Region, Northern Chile. Boletín del Museo Nacional de Historia Natural, Chile 67(2): 145-153.
Alarcón-Muñoz, J., S., Soto-Acuña, L. Codorniú, D. Rubilar-Rogers, M. Sallaberry and M. Suárez. 2020. New ctenochasmatid pterosaur record for Gondwana: discovery in the Lower Cretaceous continental deposits of the Atacama Desert, northern Chile. Cretaceous Research, 110, 104378 https://doi.org/10.1016/j.cretres.2020.104378
Alarcón-Muñoz, J., R.A. Otero, S. Soto-Acuña, A.O. Vargas, J. Rojas. and O. Rojas. 2021. First record of a Late Jurassic Rhamphorhynchine pterosaur from Gondwana. Acta Paleontologica Polonica 66(3): 571-583. https://doi.org/10.4202/app.00805.2020
Andres, B. and Q. Ji. 2008. A new pterosaur from the Liaoning Province of China, the phylogeny of the Pterodactyloidea, and convergence in their cervical vertebrae. Palaeontology 51 (2): 453-469. https://doi.org/10.1111/j.1475-4983.2008.00761.x
Bell, C.M. 1991. The relationships between sedimentary structures, transport directions and dune types in Mesozoic Aeolian sandstones, Atacama Region, Chile. Sedimentology, 38: 289-300. https://doi.org/10.1111/j.1365-3091.1991.tb01261.x
Bell, C.M. and K. Padian. 1995. Pterosaurs fossils from the Cretaceous of Chile: Evidence for a pterosaur colony on an inland desert plain. Geological Magazine, 132(1): 31-38. https://doi.org/10.1017/S0016756800011407
Bell, C.M. and M. Suárez. 1993. The depositional environments and tectonic development of a Mesozoic intra-arc basin, Atacama Region, Chile. Geological Magazine, 130(4): 417-430. https://doi.org/10.1017/S0016756800020501
Bell, C.M. y M. Suárez.. 1989. Vertebrate fossil and trace fossils in Upper Jurassic Lower Cretaceous red beds in the Atacama Region, Chile. Journal of South American Earth Sciences, 2(4): 351-357. https://doi.org/10.1016/0895-9811(89)90013-8
Bell, C.M. y M. Suárez. 1985. Formación Quebrada Monardes dnepositación fluvial en un ambiente árido, Jurásico- Cretácico, Atacama. In: IV Congreso Geológico Chileno. N° 4, Actas, Vol. 1: 29-37. Antofagasta.
Chong, G. 1976. Las relaciones de los sistemas Jurásico y Cretácico en la zona preandina del Norte de Chile: significado cronológico y paleobiogeográfico. Revista Geológica de Chile, 24: 103-106.
Cornejo, P., C. Mpodozis and A. Tomlinson. 1998. Hoja Salar de Maricunga, Región de Atacama (carta geológica 1:100.000). Servicio Nacional de Geología y Minería N° 7. SERNAGEOMIN, Santiago, Chile.
Covacevich, V. 1985. Nueva localidad para Myophorella (M.) hillebrandti (Reyes y Pérez) en el norte de Chile: Significado cronológico y paleobiogeográfico. Revista Geológica de Chile, 24: 103-106.
Iriarte, S., C. Arévalo and C. Mpodozis. 1999. Hoja La Guardia, Región de Atacama. Servicio Nacional de Geología y Minería, Mapas Geológicos 3 (1:100.000). Santiago.
Kellner, A.W.A. 1996. Description of new material of Tapejaridae and Anhangueridae (Pterosauria, Pterodactyloidea) and discussion of pterosaur phylogeny. PhD thesis, Columbia University. (Published by University Microfilms International): 347 pp.
Martill, D.M., E. Frey, G. Chong Díaz and C.M. Bell. 2000. Reinterpretation of a Chilean pterosaur and the occurrence of Dsungaripteridae in South America. Geological Magazine 137(1): 19-25. https://doi.org/10.1017/S0016756800003502
Martill, D.M., E. Frey, C.M. Bell and G. Chong Díaz. 2006. Ctenochasmatid pterosaurs from the Early Cretaceous deposits in Chile. Cretaceous Research 27: 603-610. https://doi.org/10.1016/j.cretres.2006.03.002
Martínez, F., M. Peña and C. Arriagada. 2015. Geología de las áreas Iglesia Colorada-Cerro del Potro y Cerro Mondaquita, Región de Atacama. Servicio Nacional de Geología y Minería, Carta Geológica de Chile, Serie Geología Básica 179-180, 1 mapa escala 1:100.000. Santiago.
Mercado, M. 1982. Carta Geológica de Chile: Hoja Laguna del Negro Francisco, Región de Atacama (includes map and memoir of 73 pp.). Servicio Nacional de Geología y Minería, 56 (ISSN: 0716-0194).
Muzzio, G. 1980. Geología de la región comprendida entre el Cordón el Varillar y Sierra de Vizcachas, Precordillera de Atacama. Unpublished thesis, Universidad de Chile: 176 pp
Naranjo, L.A. and A. Puig. 1984. Hojas Taltal y Chañaral. Servicio Nacional de Geología y Minería, Carta Geológica de Chile: 62-63.
Qvarnström, M., E. Elgh, K. Owocki, P. E. Ahlberg and G. NiedŹWiedzki. 2019. Filter feeding in Late Jurassic pterosaurs supported by coprolite contents. PeerJ 7: e7375. https://doi.org/10.7717/peerj.7375
Soto-Acuña, S., R.A. Otero, D. Rubilar-Rogers and A.O. Vargas. 2015. Arcosaurios no avianos de Chile. P. 209-263 In: D. Rubilar-Rogers, R. Otero, A. Vargas y M. Sallaberry (Eds.) Vertebrados Fósiles de Chile, Publicación Ocasional N° 63 del Museo Nacional de Historia Natural, Santiago, 465 p.
Wellnhofer, P. 1991. The illustrated Encyclopedia of Pterosaurs. Salamander Books: 192 pp.
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Copyright (c) 2022 Jhonatan Alarcón_Muñoz, Karina Buldrini Oviedo, Dániel Bajor, David Rubilar Rogers
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