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Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia.
Naturwissenschaften. 2004 Oct; 91(10):493-7.N

Abstract

Ornithischian and theropod dinosaurs were morphologically diverse during the Cretaceous. In contrast, sauropods were relatively more conservative. The anatomy of Bonitasaura salgadoi, a new 9-m titanosaurian sauropod from Upper Cretaceous beds of Patagonia, suggests that sauropod anatomical diversity would have included unexpected items. Its unusual, rectangular lower jaw possesses narrow, anteriorly restricted teeth and shows evidence of a sharp keratinous sheath over the nondentigerous region that probably worked to guillotine plant material. This discovery definitely demonstrates that titanosaurs acquired a mandibular configuration similar to that of some basal diplodocoids, as had already been suggested by the lower jaw of the controversial genus Antarctosaurus. This oral configuration, plus the beak-like structure and the skull shape, resemble some traits more commonly seen in Laurasian ornithischians, mostly unexpressed in southern continents. A high sauropod morphological diversity seems to be in agreement with the poorly represented ornithischian clades of the southern hemisphere.

Authors+Show Affiliations

Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Av. Angel Gallardo 470, 1405 Buenos Aires, Argentina. paleoninja@yahoo.com.ar

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15729763

Citation

Apesteguía, Sebastián. "Bonitasaura Salgadoi Gen. Et Sp. Nov.: a Beaked Sauropod From the Late Cretaceous of Patagonia." Die Naturwissenschaften, vol. 91, no. 10, 2004, pp. 493-7.
Apesteguía S. Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia. Naturwissenschaften. 2004;91(10):493-7.
Apesteguía, S. (2004). Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia. Die Naturwissenschaften, 91(10), 493-7.
Apesteguía S. Bonitasaura Salgadoi Gen. Et Sp. Nov.: a Beaked Sauropod From the Late Cretaceous of Patagonia. Naturwissenschaften. 2004;91(10):493-7. PubMed PMID: 15729763.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bonitasaura salgadoi gen. et sp. nov.: a beaked sauropod from the Late Cretaceous of Patagonia. A1 - Apesteguía,Sebastián, PY - 2005/2/25/pubmed PY - 2005/4/12/medline PY - 2005/2/25/entrez SP - 493 EP - 7 JF - Die Naturwissenschaften JO - Naturwissenschaften VL - 91 IS - 10 N2 - Ornithischian and theropod dinosaurs were morphologically diverse during the Cretaceous. In contrast, sauropods were relatively more conservative. The anatomy of Bonitasaura salgadoi, a new 9-m titanosaurian sauropod from Upper Cretaceous beds of Patagonia, suggests that sauropod anatomical diversity would have included unexpected items. Its unusual, rectangular lower jaw possesses narrow, anteriorly restricted teeth and shows evidence of a sharp keratinous sheath over the nondentigerous region that probably worked to guillotine plant material. This discovery definitely demonstrates that titanosaurs acquired a mandibular configuration similar to that of some basal diplodocoids, as had already been suggested by the lower jaw of the controversial genus Antarctosaurus. This oral configuration, plus the beak-like structure and the skull shape, resemble some traits more commonly seen in Laurasian ornithischians, mostly unexpressed in southern continents. A high sauropod morphological diversity seems to be in agreement with the poorly represented ornithischian clades of the southern hemisphere. SN - 0028-1042 UR - https://www.unboundmedicine.com/medline/citation/15729763/Bonitasaura_salgadoi_gen__et_sp__nov_:_a_beaked_sauropod_from_the_Late_Cretaceous_of_Patagonia_ L2 - https://dx.doi.org/10.1007/s00114-004-0560-6 DB - PRIME DP - Unbound Medicine ER -