干旱区生态环境知识资源中心(Arid): Carcharodontosauridae theropod tooth crowns from the Upper Cretaceous (Bauru Basin) of Brazil: A reassessment of isolated elements and its implications to palaeobiogeography of the group

Arid

DOI	10.1016/j.palaeo.2020.109870
	Carcharodontosauridae theropod tooth crowns from the Upper Cretaceous (Bauru Basin) of Brazil: A reassessment of isolated elements and its implications to palaeobiogeography of the group
	Delcourt, Rafael; Brilhante, Natan S.; Grillo, Orlando N.; Ghilardi, Aline M.; Augusta, Bruno G.; Ricardi-Branco, Fresia
通讯作者	Delcourt, R
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2020
卷号	556
英文摘要	Theropod tooth crowns are abundant in the Upper Cretaceous (post-Coniacian) continental deposits of the Bauru Group, Brazil. The distribution of anatomical crown features indicates that a variety of carnivorous dinosaurs inhabited the area at that time, which is consistent with fossil records from other parts of Gondwana. More specifically, some authors have attributed several isolated specimens to the Carcharodontosauridae; while this has important implications for palaeobiogeography and paleoecology, other scholars have argued that the Glade became extinct during the Turonian. In this study, we conducted discriminant and phylogenetic analyses for 18 crowns putatively assigned to the Carcharodontosauridae. In short, the discriminant analysis suggested that the specimens should be tentatively assigned to the following groups: non-abelisauroid Ceratosauria, Abelisauridae, Neovenatoridae, Dromaeosauridae, and Pantyrannosauria. By contrast, the phylogenetic analysis indicated that all should be assigned to abelisaurid theropods, which is consistent with the theropod osteological records in both Brazil and Argentina. We recommend using a combined approach involving morphometric and phylogenetic tools when identifying isolated teeth, as this may yield more reliable identifications. We also suggest that all previous reports on the presence of post-Turonian carcharodontosaurids in the Bauru Group are invalid, which also corroborates previous work. Our results indicate that abelisaurids from the Bauru Basin were diverse in morphology and activity; that is, many were quite large and/or played important ecological roles. Findings also support the hypothesis that this taxon had a preference for semi-arid environments.
英文关键词	Morphometrics Abelisauridae Tooth crown Bauru Group Gondwana Systematics
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000561370700006
WOS关键词	SAO-PAULO STATE ; ADAMANTINA FORMATION ; MARILIA FORMATION ; DINOSAURIA THEROPODA ; ALCANTARA FORMATION ; MINAS-GERAIS ; EVOLUTION ; PHYLOGENY ; PATAGONIA ; TEETH
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325737
作者单位	[Delcourt, Rafael; Ricardi-Branco, Fresia] Univ Estadual Campinas UNICAMP, Inst Geociencias, Cidade Univ,Rua Carlos Gomes 250, BR-13083855 Campinas, SP, Brazil; [Brilhante, Natan S.; Grillo, Orlando N.] Univ Fed Rio de Janeiro MN UFRJ, Museu Nacl, Quinta Boa Vista S-N, BR-20940040 Rio De Janeiro, RJ, Brazil; [Ghilardi, Aline M.] Univ Fed Rio Grande do Norte UFRN, Dept Geol, Campus Univ,Rua Engn S-N, BR-59078970 Natal, RN, Brazil; [Augusta, Bruno G.] Univ Sao Paulo, Museu Zool, Ave Nazare 481, BR-04263000 Sao Paulo, SP, Brazil; [Augusta, Bruno G.] Southern Methodist Univ, ISEM, Heroy Sci Hall,3225 Daniel Ave, Dallas, TX 75205 USA
推荐引用方式 GB/T 7714	Delcourt, Rafael,Brilhante, Natan S.,Grillo, Orlando N.,et al. Carcharodontosauridae theropod tooth crowns from the Upper Cretaceous (Bauru Basin) of Brazil: A reassessment of isolated elements and its implications to palaeobiogeography of the group[J],2020,556.
APA	Delcourt, Rafael,Brilhante, Natan S.,Grillo, Orlando N.,Ghilardi, Aline M.,Augusta, Bruno G.,&Ricardi-Branco, Fresia.(2020).Carcharodontosauridae theropod tooth crowns from the Upper Cretaceous (Bauru Basin) of Brazil: A reassessment of isolated elements and its implications to palaeobiogeography of the group.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,556.
MLA	Delcourt, Rafael,et al."Carcharodontosauridae theropod tooth crowns from the Upper Cretaceous (Bauru Basin) of Brazil: A reassessment of isolated elements and its implications to palaeobiogeography of the group".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 556(2020).