棘龙科(恐龙:兽脚亚目):分类学、古生物地理学和古生态学(综述)

Rafael Terras, Mirian Carbonera, Guilherme Budke, K. J. G. Leite
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引用次数: 0

摘要

棘龙科(恐龙纲:兽脚亚目):分类、古地理与古生态学(订正)。棘龙科是破伤风目兽脚亚目恐龙的一个科,广泛分布于早白垩纪。在此,我们对该科的分类学、古生物地理学和古生态学的研究现状进行了修订。我们编制了自1841年以来归属于该家族的20种全型的最新诊断,以及与该家族的古生物地理学和古生态学相关的不同假设。我们还编制了一系列与文献相关的不确定因素的最新诊断。由于缺乏诊断资料和自异形特征,在这20个分类群中,有6个可被认为是名义上的可疑分类群,分别是:突剑龙、吉拉迪棘龙、马氏棘龙、苏特角叉龙、扶桑中国上龙、cultridens。其中,有3只被认为是不同类(异角龙)(异角龙),它们分别是异角龙(异角龙)、异角龙(异角龙)和异角龙(异角龙),原因相同,而且它们可能属于棘龙科中已经建立的分类群,其中一只(异角龙)可能属于角龙。就古生物地理学而言,化石证据表明该家族可能起源于Laurasia(西欧),但比欧洲分类群更古老的牙齿的存在可能表明该家族可能起源于Gondwana(巴西)。最后,在古生态学方面,最被接受的假设是它们是水生环境边缘(即河岸带)的通才捕食者,像现代苍鹭和鹳一样在浅水中涉水,必要时也会诉诸陆地环境。他们将资源和环境之间交流的能力,除了分享他们的栖息地的食肉恐龙与其他spinosaurids Abelisauridae和Carcharodontosauridae家庭,甚至,如果环境条件支持它。关键词:兽脚亚目,棘龙科,棘龙科,重爪龙科,古生物地理,古生态学
本文章由计算机程序翻译,如有差异,请以英文原文为准。
FAMÍLIA SPINOSAURIDAE (DINOSAURIA: THEROPODA): TAXONOMIA, PALEOBIOGEOGRAFIA E PALEOECOLOGIA (UMA REVISÃO)
Spinosauridae family (Dinosauria: Theropoda): taxonomy, paleobiogeography and paleoecology (a revision). Spinosauridae is a family of Tetanuran theropod dinosaurs that was widely distributed during the Early Cretaceous. Here we revised the state of art of the family’s taxonomy, paleobiogeography and paleoecology. We compiled updated diagnosis for the holotypes of the 20 species attributed to the family since 1841, alongside with the different hypotheses related to the family’s paleobiogeography and paleoecology. We also compiled updated diagnosis for a series of indeterminate elements that are relevant in literature. We conclude that out of these 20 taxa six can be regarded as nomina dubia (Ostafrikasaurus crassiserratus, Suchosaurus girardi, Spinosaurus maroccanus, Siamosaurus suteethorni, Sinopliosaurus fusuiensis, Suchosaurus cultridens) due to the lack of diagnostic material and autapomorphies. Out of these, three were regarded as incertae sedis (Ostafrikasaurus crassiserratus, Suchosaurus girardi, Suchosaurus cultridens) for the same reasons and the possibility of belonging to previously already established taxa inside Spinosauridae and for one of these (Ostafrikasaurus crassiserratus) for possibly being a member of Ceratosauria. As for paleobiogeography, the fossil evidence suggests that the family might have originated in Laurasia (Western Europe), but the existence of a tooth older than the European taxa might indicate that the family might have originated in Gondwana (Brazil). Finally, regarding paleoecology, the most accepted hypothesis is that they were generalist predators of the margins of aquatic environments (i.e. riparian zone), and waders in shallow waters like modern herons and storks, and if necessary also resorting to terrestrial environments. They would be capable of alternating between resources and environments, in addition to sharing their habitats with theropods of the Abelisauridae and Carcharodontosauridae families and even with other spinosaurids, if the environmental conditions favored it. Keywords: Theropoda, Spinosauridae, Spinosaurinae, Baryonychinae, paleobiogeography, paleoecology.
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