A new sauropod dinosaur (Dinosauria,Sauropoda) from the late Early Cretaceous of the Ruyang Basin (central China) |
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| Institution: | 1. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Henan Geological Museum, Zhengzhou 450016, China;1. Programa de Pós Graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil;2. Laboratório de Estratigrafia e Paleobiologia, Departamento de Geociências, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil;3. Programa de Pós Graduação em Ciências Biológicas, Universidade Federal do Pampa, São Gabriel, RS, Brazil;4. Centro de Apoio a Pesquisa Paleontológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil;1. Museo Municipal Argentino Urquiza, Jujuy y Chaco s/n, 8319, Rincón de los Sauces, Neuquén, Argentina;2. CONICET, Instituto de Investigación en Paleobiología y Geología (CONICET-UNRN), Av. Roca 1242, 8332, General Roca, Río Negro, Argentina;3. Secretaría de Cultura de la Provincia de Río Negro, 8332, General Roca, Río Negro, Argentina;4. Museo Provincial de Ciencias Naturales Prof. Dr. Juan Olsacher, Dirección Provincial de Minería, Etcheluz y Ejército Argentino, 8340, Zapala, Neuquén, Argentina;1. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología, Río Negro, Argentina;2. IIPG, UNRN, Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Av. Roca 1242, (R8332EXZ) General Roca, Río Negro, Argentina;3. CONICET, Museo Carlos Ameghino, Belgrano 1700, Paraje Pichi Ruca (predio Marabunta), Cipolletti, Río Negro, 8300, Argentina;1. Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstrasse 43, 10115, Berlin, Germany;2. Grupo de Biología Evolutiva, Facultad de Ciencias, UNED, Senda del Rey 9, 28040, Madrid, Spain;3. Unidad de Paleontología, Departamento de Biología, Universidad Autónoma de Madrid, Calle Darwin 2, 20049, Madrid, Spain;4. Facultad de Bellas Artes, Universidad Complutense de Madrid, Calle Pintor el Greco 2, 28040, Madrid, Spain;1. Dinosaur Institute, Natural History Museum of Los Angeles County, 900 Exposition Blv, 90007 CA, Los Angeles, USA;2. Grupo de Biología Evolutiva. Facultad de Ciencias, UNED, Paseo de la Senda del Rey, 9, 28040 Madrid, Spain;3. Instituto Dom Luiz, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal |
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| Abstract: | A new long-necked sauropod dinosaur, Yunmenglong ruyangensis gen. et sp. nov., is erected on the basis of an incomplete skeleton from the late Early Cretaceous Haoling Formation of the Ruyang Basin, Henan Province. The characters of the anterior cervical vertebrae, the shape of the neural canal of the dorsal vertebra and the ball-shaped distal end of the neural spine of caudal vertebrae with coarse surfaces differ from other long-necked sauropod dinosaurs. The new genus has characters in common with both Euhelopus and Erketu; it represents the first long-necked sauropod dinosaur recorded from central China to date. The rod-like, well-developed epipophyses and the pleurocoels on the cervical vertebrae indicate that it may be close to Euhelopus, an observation also confirmed by a phylogenetic analysis, which shows that Erketu, Yunmenglong and Qiaowanlong form a clade, and are more derived than Euhelopus. |
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| Keywords: | Dinosauria Sauropod Titanosauriformes Late early Cretaceous Henan Province Dinosauria Titanosauriformes New taxon Henan Province |
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