Spinosaurs as Crocodile Mimics

  title={Spinosaurs as Crocodile Mimics},
  author={Thomas Richard Holtz},
  pages={1276 - 1277}
  • T. Holtz
  • Published 13 November 1998
  • Environmental Science
  • Science
The dinosaurs called theropods--a group that includes allosaurs and velociraptors--have been in the news lately because of their role in the debate over the origins of birds and avian flight. But there is much more to the theropod story, as Holtz discusses in his Perspective. [ Sereno et al .][1] report in the same issue the discovery of a new variety of spinosaur, a type of theropod, whose skull has features very similar to those of crocodiles. With an elongated snout and conical teeth, this… 

A Century of Spinosaurs ‐ A Review and Revision of the Spinosauridae with Comments on Their Ecology

The spinosaurids represent an enigmatic and highly unusual form of large tetanuran theropods that were first identified in 1915 and point to an unusual ecological niche and a lifestyle intimately linked to water.


  • L. XingW. Persons P. Currie
  • Environmental Science, Geography
    Evolution; international journal of organic evolution
  • 2013
The largest specimen of the four‐winged dromaeosaurid dinosaur Microraptor gui includes preserved gut contents, which offer unique insights into the ecology of nonavian dinosaurs early in the evolution of flight.

Comments on the ecology of Jurassic theropod dinosaur Ceratosaurus (Dinosauria: Theropoda) with critical reevaluation for supposed semiaquatic lifestyle

Ceratosaurus is a genus of carnivorous theropod that is characterized by distinctive horns located midline of its nasal and above of its eyes. The type species of this genus, Ceratosaurus nasicornis

Feeding Mechanics in Spinosaurid Theropods and Extant Crocodilians

Biomechanical data support known feeding ecology for both African slender-snouted crocodile and alligator, and suggest that the spinosaurs were not obligate piscivores with diet being determined by individual animal size.

Oxygen isotope evidence for semi-aquatic habits among spinosaurid theropods

It is concluded that spinosaurs had semiaquatic lifestyles, i.e., they spent a large part of their daily time in water, like extant crocodilians or hippopotamuses, and sheds light on niche partitioning between large predatory dinosaurs.


Abstract Spinosaurid theropod dinosaurs appear to represent convergent morphological evolution toward a crocodylian-like cranial morphology, previously linked to the possibility that spinosaurs

Evaluating the ecology of Spinosaurus: shoreline generalist or aquatic pursuit specialist?

The giant theropod Spinosaurus was an unusual animal and highly derived in many ways, and interpretations of its ecology remain controversial. Recent papers have added considerable knowledge of the

Semi-aquatic adaptations in a spinosaur from the Lower Cretaceous of Brazil

Spinosaur taxonomy and evolution of craniodental features: Evidence from Brazil

Some craniodental features of spinosaurid theropods from Brazil are reinterpreted, providing new data for taxonomic and evolutionary issues concerning this particular clade of dinosaurs, and leave open the possibility of the former subfamily being non-monophyletic.



A long-snouted predatory dinosaur from africa and the evolution of spinosaurids

The close phylogenetic relationship between the new African spinosaurid and Baryonyx from Europe provides evidence of dispersal across the Tethys seaway during the Early Cretaceous.

A new crested maniraptoran dinosaur from the Santana Formation (Lower Cretaceous) of Brazil

The skull of a new, and highly unusual crested dinosaur with an elongate rostrum is the first dinosaur to be named from the Santana Formation of NE Brazil. Irritator challengeri gen. et sp. nov was

Two feathered dinosaurs from northeastern China

Two theropods from the Upper Jurassic/Lower Cretaceous Chaomidianzi Formation of Liaoning province, China are described, which represent stages in the evolution of birds from feathered, ground-living, bipedal dinosaurs.

Predatory Dinosaurs from the Sahara and Late Cretaceous Faunal Differentiation

Late Cretaceous (Cenomanian) fossils discovered in the Kem Kem region of Morocco include large predatory dinosaurs that inhabited Africa as it drifted into geographic isolation. One, represented by a

A Revision of Sphenosuchus acutus Haughton, a Crocodylomorph Reptile from the Elliot Formation (Late Triassic or Early Jurassic) of South Africa

It is concluded that the most important steps in crocodylomorph evolution, particularly in the skull, had taken place in sphenosuchians, hence they should be included in the same taxon as protosuchian and more advanced crocodilians, rather than with thecodontians.

Functional Morphology in Vertebrate Paleontology

This paper presents a meta-analysis of the evolution of the hindlimb and tail from basal theropods to birds and the consequences of skull flattening in crocodilians and an analysis of the posture and gait of ceratopsian dinosaurs.

DNA conformation is determined by economics in the hydration of phosphate groups

It is suggested that more economical hydration in A- and Z-DNA compared with B-DNA is the underlying cause of B → A and B → Z transitions.

Bull. Soc. Ceol. France Buffetaut, Neues jahrb. Geol. Palaeontol. Monatsh

  • Bull. Soc. Ceol. France Buffetaut, Neues jahrb. Geol. Palaeontol. Monatsh
  • 1988