Adaptations for marine habitat and the effect of Triassic and Jurassic predator pressure on development of decompression syndrome in ichthyosaurs

  title={Adaptations for marine habitat and the effect of Triassic and Jurassic predator pressure on development of decompression syndrome in ichthyosaurs},
  author={Bruce M. Rothschild and Zheng Xiaoting and L. D. Martin},
Decompression syndrome (caisson disease or the “the bends”) resulting in avascular necrosis has been documented in mosasaurs, sauropterygians, ichthyosaurs, and turtles from the Middle Jurassic to Late Cretaceous, but it was unclear that this disease occurred as far back as the Triassic. We have examined a large Triassic sample of ichthyosaurs and compared it with an equally large post-Triassic sample. Avascular necrosis was observed in over 15 % of Late Middle Jurassic to Cretaceous… 

Absence of Suction Feeding Ichthyosaurs and Its Implications for Triassic Mesopelagic Paleoecology

It is most likely that Triassic and Early Jurassic ichthyosaurs were ‘ram-feeders’, without any beaked-whale-like suction feeder among them, which matches the fossil record of coleoids, which indicates the absence of soft-bodied deepwater species in the Triassic.

Palaeoepidemiology in extinct vertebrate populations: factors influencing skeletal health in Jurassic marine reptiles

The results show that the incidence of pathologies is dependent on taxon, with the small-bodied genus Stenopterygius exhibiting fewer skeletal pathologies than other genera, and the quantification of the occurrence of pathology within taxa and across guilds is critical to constructing more detailed hypotheses regarding changes in the prevalence of skeletal injury and disease through Earth history.

Early Triassic Marine Biotic Recovery: The Predators' Perspective

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Skeletal pathologies track body plan evolution in ichthyosaurs

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A new Lower Cretaceous ichthyosaur from Russia reveals skull shape conservatism within Ophthalmosaurinae

The skull of a new basal ophthalmosaurine ichthyosaur, Leninia stellans gen. et sp.

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The Permian and Triassic in the Albanian Alps

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Unusual intraosseous fossilized soft tissues from the Middle Triassic Nothosaurus bone

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Warm-Blooded “Sea Dragons”?

  • R. Motani
  • Environmental Science, Biology
  • 2010
It is reported that some ancient reptiles from the Age of Dinosaurs may have been able to sustain a constant body temperature (i.e., homeothermy), similar to today's marine mammals.

The evolution of thunniform locomotion and heat conservation in scombrid fishes: New insights based on the morphology of Allothunnus fallai

It is suggested that the shift in red muscle position and changes in central circulation preceded the evolution of red-muscle endothermy, contributing significantly to the ecological radiation and diversification of tunas during the Early Tertiary Period.

Regulation of Body Temperature by Some Mesozoic Marine Reptiles

Data distribution reveals that these large marine reptiles were able to maintain a constant and high body temperature in oceanic environments ranging from tropical to cold temperate, and suggest high metabolic rates required for predation and fast swimming over large distances offshore.

Short-Snouted Toothless Ichthyosaur from China Suggests Late Triassic Diversification of Suction Feeding Ichthyosaurs

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Tooth morphology and prey preference of Mesozoic marine reptiles

The guilds present in six well-preserved faunas of the Jurassic and Cretaceous illustrate the structure of and changes in the large marine predator adaptive zone.

Diving behavior of immature, feeding Pacific bluefin tuna (Thunnus thynnus orientalis) in relation to season and area: the East China Sea and the Kuroshio–Oyashio transition region

Twenty-four archival tags were recovered from Pacific bluefin tuna previously released off Tsushima Island in the East China Sea. By analysis of the time-series data of the pressure and the ambient

Biology of Sharks and Their Relatives

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Avascular osteonecrosis was found in the Oligocene basal odontocetes (Xenorophoidea) and in geologically younger mysticetes, such as Aglaocetus, considered as early “experiments” in repetitive deep diving, indicating that they independently converged on their similar specialized diving physiologies.

Phylogeny, systematics, and origin of the Ichthyosauria - the state of the art

At the present state of knowledege, a defi nite decision on the origin and phylogenetic position of ichthyosaurs is still impossible, but descent from primarily anapsid ancestors and an origin from among the Parareptilia can not be excluded as an alternative to a diapsid origin of the group.