The ‘death roll’ of giant fossil crocodyliforms (Crocodylomorpha: Neosuchia): allometric and skull strength analysis

@article{Blanco2015TheR,
  title={The ‘death roll’ of giant fossil crocodyliforms (Crocodylomorpha: Neosuchia): allometric and skull strength analysis},
  author={R. Ernesto Blanco and Washington W. Jones and Joaqu{\'i}n Villamil},
  journal={Historical Biology},
  year={2015},
  volume={27},
  pages={514 - 524}
}
In the evolution of crocodylomorphs, there were at least three giant-dimension genera: Deinosuchus from late Cretaceous of North America, Sarcosuchus from middle Cretaceous of Africa and South America, and Purussaurus from Miocene of South America. It has been suggested that these predators could have fed on very large prey as dinosaurs and megamammals. The ‘death roll’ is a spinning manoeuver executed to subdue and dismember large prey; therefore, it has been previously suggested that giant… Expand
New cranial and postcranial elements of Mourasuchus (Alligatoroidea: Caimaninae) from the late Miocene of Venezuela and their palaeobiological implications
ABSTRACT A partial skeleton of Mourasuchus, one of the most peculiar crocodylians of all time, that includes cranial and postcranial elements recovered from the late Miocene bone-beds of the UrumacoExpand
The history, importance and anatomy of the specimen that validated the giant Purussaurus brasiliensis Barbosa-Rodrigues 1892 (Crocodylia: Caimaninae).
TLDR
A historical reconstruction of the genus Purussaurus is provided, especially with a new description of the specimen DGM 527-R, which was first described by L. I. Price and recognized here scientifically and by Campos when considered this specimen as the center-piece of the exhibition in honor of the centenary anniversary of Price. Expand
A new caimanine (Crocodylia, Alligatoroidea) species from the Solimões Formation of Brazil and the phylogeny of Caimaninae
ABSTRACT The Miocene deposits of South America are notable for their diverse crocodyliform fauna, of which the giant caimanine Purussaurus is a well-known example. This contribution describes a newExpand
New fossils of the giant pholidosaurid genus Sarcosuchus from the Early Cretaceous of Tunisia
Abstract The Lower Cretaceous vertebrate assemblages from southeastern Tunisia contain one of the most diverse, unique and significant vertebrate faunas of this period in North Africa. The fossilExpand
Feeding in Crocodylians and Their Relatives: Functional Insights from Ontogeny and Evolution
TLDR
Context is provided for interpreting how the development and evolution of performance are thought to have shaped the vertebrate head—as informed by the deep evolutionary history of living crocodylians and their fossil precursors. Expand
Revista Brasileira de Paleontologia
The caimanine crocodylian Mourasuchus from the Miocene of South America is one of the most peculiar crocodylomorphs of all time. It exhibits an unusual long, wide and dorsoventrally flattenedExpand
Surveying death roll behavior across Crocodylia
TLDR
The patterns of death roll behavior observed suggest that this behaviour is not novel to any one crocodylian clade, morphotype, or dietary niche, and the prevalence of death rolling behaviour across Crocodylia in response to perceived threats indicates that it is not solely, or maybe even primarily, a feeding behaviour, but is also utilised during inter- and intra-specific conflict as a means to escape or injure an opponent. Expand
Systematic revision of Sarcosuchus hartti (Crocodyliformes) from the Recôncavo Basin (Early Cretaceous) of Bahia, north-eastern Brazil
TLDR
The Brazilian taxon differs from the African Sarcosuchus imperator in the unique pattern of anastomosing ornamentation observed on the enamel surface and is likely related to a cladogenesis event that resulted from the break-up of Gondwana. Expand
Does skull morphology constrain bone ornamentation? A morphometric analysis in the Crocodylia
TLDR
It can be concluded that bone sculpture on the snout is influenced by different developmental constrains than on the skull table and is sensible to differences in the local growth ‘context' (allometric processes) prevailing in distinct skull parts. Expand
Variation in crocodilian dorsal scute organization and geometry with a discussion of possible functional implications
TLDR
Analysis of average intraspecific variability of geometry and fluctuating asymmetry in dorsal scutes in five species of crocodilians suggests that, in general, crocodilian osteoderms function primarily as defensive armor in aggressive encounters with conspecifics. Expand
...
1
2
...

References

SHOWING 1-10 OF 69 REFERENCES
A new giant Purussaurus (Crocodyliformes, Alligatoridae) from the Upper Miocene Urumaco Formation, Venezuela
TLDR
A phylogenetic analysis of 164 characters in 68 ingroup crocodile taxa supported the association of P. neivensis and P. mirandai with five synapomorphies and confirmed the sister‐group relationship of the genus with the Nettosuchidae. Expand
Shape and mechanics in thalattosuchian (Crocodylomorpha) skulls: implications for feeding behaviour and niche partitioning
TLDR
Evidence also indicates that morphological and functional differentiation of the skull occurred as a result of dietary preference, allowing closely related sympatric species to exploit a limited environment. Expand
The Crocodylomorpha at and between geological boundaries: the Baden-Powell approach to change?
TLDR
The patterns of cladogenesis and diversification within the Crocodylomorpha indicate that, at least as currently understood, these taxa were prepared for the major environmental and biotic events that occurred during their history. Expand
The evolution of Metriorhynchoidea (mesoeucrocodylia, thalattosuchia): an integrated approach using geometric morphometrics, analysis of disparity, and biomechanics
TLDR
This study illustrates the importance of using a varied toolkit of techniques that together with phylogeny, quantitative assessment of diversity, form, and function help elucidate the macroevolutionary pattern of fossil clades. Expand
Rotational feeding in caecilians: putting a spin on the evolution of cranial design
TLDR
It is demonstrated that long-axis body rotations are used independent of prey size by these two species of caeciliid caecilians when feeding underground, and that individuals are capable of generating a substantial spinning force, which is greater than their bite force. Expand
CHAPTER 10 – Feeding in Crocodilians
TLDR
Most traditional assessments of crocodilian phylogeny are based on analysis of the numerous differences in head morphology and skull structure among different species, which means few reliable characters can be used for phylogenetic studies. Expand
Biomechanics of the rostrum in crocodilians: a comparative analysis using finite-element modeling.
TLDR
Investigation of the relationship between rostral shape and biomechanical performance in living crocodilians under a range of loading conditions found the shape of the crocodilian rostrum may be significantly affected by the hydrodynamic constraints of catching agile aquatic prey. Expand
King of the Crocodylians: The Paleobiology of Deinosuchus
TLDR
King of the Crocodylians is the most complete effort to date to tell the story of an animal crocodile aficionados have long admired—the enormous Campanian alligatoroid Deinosuchus. Expand
CONSUMPTION OF LARGE MAMMALS BY CROCODYLUS MORELETII: FIELD OBSERVATIONS OF NECROPHAGY AND INTERSPECIFIC KLEPTOPARASITISM
TLDR
Field observations of necrophagy and interspecific kleptoparasitism involving the consumption of domestic cattle and Baird's tapir carcasses by Morelet's crocodile in Belize suggest that large mammals represent an important, albeit rare and hitherto overlooked, food resource for adult C. moreletii. Expand
Patterns of morphospace occupation and mechanical performance in extant crocodilian skulls: A combined geometric morphometric and finite element modeling approach
TLDR
It is shown that biomechanical stress and the hydrodynamic properties of the skull show a strong relationship with the distribution of crocodilians in skull morphospace, whereas phylogeny and biogeography show weak or no correlation. Expand
...
1
2
3
4
5
...