Bite marks on a crocodylomorph from the Upper Cretaceous of Brazil: evidence of social behavior?

Avilla, Leonardo dos Santos; Fernandes, Ronaldo; Ramos, Daniela Fernandes

doi:10.1671/0272-4634(2004)024[0971:bmoacf]2.0.co;2

Cited by 51 publications

(41 citation statements)

References 11 publications

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“…The absence of erosive cavities on the deep surface of MPCA-Pv 64 suggests that the pathology is probably due to a skin infection. The pathological features of MPCA-Pv 3026 resemble those described in crocodilian osteoderms (Avilla et al, 2004;Katsura, 2004). The large semicircular cavity observed in the osteoderm suggests a puncturing and crushing trauma, possibly from a bite.…”

Section: Osteoderm Pathologiesmentioning

confidence: 67%

Morphology, microanatomy, and histology of titanosaur (Dinosauria, Sauropoda) osteoderms from the Upper Cretaceous of Patagonia

Cerda

García

Powell

et al. 2015

Journal of Vertebrate Paleontology

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4M edicos Asociados de Tucum an (MATSA), Laprida 533, (4000) Tucum an, Argentina, osclopez@tucbbs.com.ar ABSTRACT-Titanosaurs are the only group of sauropodomorph dinosaurs that possesses osteoderms. The Anacleto and Allen formations (Upper Cretaceous) from northern Patagonia (Argentina) have provided an abundance of these elements, isolated or associated with more or less complete skeletons. Here, we study the morphology, microanatomy, and histology of titanosaur osteoderms found in these stratigraphic units. The size and gross anatomy of the osteoderms are strongly variable, as well as their microanatomy, which ranges from compact structures to those with strong development of cancellous bone. The primary bone tissue is composed of structural fiber bundles that are ossified by dermal metaplasia. Bone pathologies were identified in at least two osteoderms. Bone histology suggests that the osteoderms were entirely imbedded in the stratum compactum of the dermis. Titanosaur osteoderms were probably employed for multiple functions, including mineral storage and defense.

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Section: Osteoderm Pathologiesmentioning

confidence: 67%

Morphology, microanatomy, and histology of titanosaur (Dinosauria, Sauropoda) osteoderms from the Upper Cretaceous of Patagonia

Cerda

García

Powell

et al. 2015

Journal of Vertebrate Paleontology

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“…29). Avilla et al (2004) suggested that these cavities could represent bite marks due to predation or intraspecific competition, as observed in living crocodiles.…”

Section: Dermal Armormentioning

confidence: 95%

“…Postcranial elements of Uruguaysuchus aznarezi (Rusconi, 1933), Chimaerasuchus paradoxus (Wu & Sues, 1996), Malawisuchus mwakayasyunguti (Gomani, 1997), Mahajangasuchus insignis (Buckley & Brochu, 1999), Adamantinasuchus navae (Nobre & Carvalho, 2006), and Stratiotosuchus maxhechti (Riff, 2007) are also available for comparison. However, the overall scarcity of detailed descriptions still hinders any attempt to accurately define the specialized postcranial anatomy of the family Baurusuchidae (Bertini et al, 1991(Bertini et al, , 1999Manzini et al, 1996;Brandt-Neto et al, 1992;Arruda et al, 2004;Avilla et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

A new species of Baurusuchus (Crocodyliformes, Mesoeucrocodylia) from the Upper Cretaceous of Brazil, with the first complete postcranial skeleton described for the family Baurusuchidae

Nascimento¹,

Zaher²

2010

Pap. Avulsos Zool. (São Paulo)

166

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“…These are here considered as the possible result of interspecific antagonistic interactions, which in crocodylians commonly occur in the form of bites, either lethal or nonlethal (e.g. Buffetaut, 1983; Avilla, Fernandes & Ramos, 2004; Vasconcellos & Carvalho, 2007). Similarly, the most complete skull of Nannosuchus (BMNH 48217, type) also shows bite marks on the rostrum, although in this case the perforations are much deeper.…”

Section: Geologymentioning

confidence: 99%

A new Berriasian species ofGoniopholis(Mesoeucrocodylia, Neosuchia) from England, and a review of the genus

Andrade

Edmonds

Benton

et al. 2011

Zoological Journal of the Linnean Society

111

152

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A new species, Goniopholis kiplingi sp. nov., based on an exceptionally preserved skull from the Lower Cretaceous of England is described in detail. It shows great similarity with Goniopholis simus and Goniopholis baryglyphaeus, but can be distinguished by the presence of longer lachrymals, smooth (not edged) dorsal surface of the quadrate, and proportionally longer rostrum. A comprehensive phylogenetic analysis of Mesoeucrocodylia (104 taxa; 486 characters) focused on goniopholidids (14 species) places G. kiplingi as sister‐group of G. simus, and as part of a monophyletic group also containing G. baryglyphaeus. The relationships of Nannosuchus gracilidens and three undescribed European taxa are explored, and preliminary analyses of Denazinosuchus kirtlandicus (Upper Cretaceous, USA) and ‘Goniopholis’ phuwiangensis (Lower Cretaceous, Thailand) are presented. The assignment of taxa to the genus Goniopholis is discussed. Goniopholis, in its traditional sense, is considered paraphyletic and a restricted updated definition is proposed, with comments on the evolution of other goniopholidids. Morphological characteristics of fragmentary material attributed to Goniopholis are not considered sufficient to secure their generic/specific assignment, and provide no support for the presence of Goniopholis in Gondwanan and/or Upper Cretaceous sedimentary units. Currently Goniopholis is restricted to the Upper Jurassic−Lower Cretaceous of Europe. © 2011 The Linnean Society of London, Zoological Journal of the Linnean Society, 2011, 163, S66–S108.

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Bite marks on a crocodylomorph from the Upper Cretaceous of Brazil: evidence of social behavior?

Cited by 51 publications

References 11 publications

Morphology, microanatomy, and histology of titanosaur (Dinosauria, Sauropoda) osteoderms from the Upper Cretaceous of Patagonia

Morphology, microanatomy, and histology of titanosaur (Dinosauria, Sauropoda) osteoderms from the Upper Cretaceous of Patagonia

A new species of Baurusuchus (Crocodyliformes, Mesoeucrocodylia) from the Upper Cretaceous of Brazil, with the first complete postcranial skeleton described for the family Baurusuchidae

A new Berriasian species ofGoniopholis(Mesoeucrocodylia, Neosuchia) from England, and a review of the genus

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