Bone histology as a clue in the interpretation of functional adaptations in the Thalattosuchia (Reptilia, Crocodylia)

Hua, Stéphane; Buffrénil, Vivian de

doi:10.1080/02724634.1996.10011359

Cited by 112 publications

(130 citation statements)

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“…Femoral histology of Batrachotomus differs from pseudosuchians such as aetosaurs, phytosaurs (when considered as pseudosuchians), and many crocodylomorphs (including marine forms from the Jurassic; see Hua and Buffr enil, 1996) by the general presence of laminar to (sub-)plexiform FLB, resulting in a fast, but periodically interrupted growth rate in the recorded time. Batrachotomus reached 87% of its maximum known size (corresponding to »5.6 m body length) within 3 years, which is contrary to, for example, phytosaurs and aetosaurs that take well over 10 years to attain their maximum size (Ricql es et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Preliminary observations on the bone histology of the Middle Triassic pseudosuchian archosaurBatrachotomus kupferzellensisreveal fast growth with laminar fibrolamellar bone tissue

Klein

Foth

Schoch

2017

Journal of Vertebrate Paleontology

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ABSTRACT-The bone tissue of femur, rib, and gastralia from three different individuals of the Middle Triassic pseudosuchian Batrachotomus kupferzellensis from southern Germany is studied. The femoral bone tissue comprises laminar fibrolamellar bone tissue throughout and is stratified by three annual growth cycles, indicating that the individual died early in its fourth year of life, at which time it had reached 87% of maximum known femur length. Thus, compared with most other Pseudosuchia (e.g., phytosaurs, aetosaurs, and most crocodylomorphs, including marine taxa), Batrachotomus achieved its large body size in a very short time by fast, although interrupted, growth and not by protracted longevity. Such fast growth as well as the organization of the tissue is similar to the condition observed in ornithodirans. The pseudosuchians Effigia and Postosuchus also show fibrolamellar tissue, but vascular density is lower when compared with Batrachotomus and dominated by a longitudinal organization of primary osteons. The rib and gastralium of Batrachotomus both show an inner spongious organization surrounded by a ring of compact, avascular, highly organized parallel-fibered and/or lamellar bone largely covered by short fibers. Maximal growth cycle count in the proximal rib sample suggests an age of at least 11 years for this individual with a reduction of growth rate after the sixth cycle.

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Section: Discussionmentioning

confidence: 99%

Preliminary observations on the bone histology of the Middle Triassic pseudosuchian archosaurBatrachotomus kupferzellensisreveal fast growth with laminar fibrolamellar bone tissue

Klein

Foth

Schoch

2017

Journal of Vertebrate Paleontology

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“…a Plotosaurus (mosasaur); b Muraenosaurus (plesiosaur); c Placodus (placodont); d Archelon (sea turtle); e Ophthalmosaurus (ichthyopterygian); f Askeptosaurus (thalattosaur); g Pleurosaurus (pleurosaurs); h Metriorhynchus (thalattosuchian). a-g Modified from Camp (1942), Andrews (1910), Carroll (1988, Wieland (1909), McGowan and Motani (2002), Kuhn-Schnyder (1952), Carroll (1985, and Hua and Buffrenil (1996), respectively. Body outlines are inaccurate Two of the four major groups appeared in the Early Triassic McGowan and Motani 2002), whereas the others are first recorded from the Early (Chelonioidea) and Late (Mosasauridae) Cretaceous (Hirayama 1998;Jacobs et al 2005).…”

Section: Mesozoic Marine Reptilesmentioning

confidence: 99%

The Evolution of Marine Reptiles

2009

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Reptiles have repeatedly invaded marine environments despite their physiological constraints as air breathers. Marine reptiles were especially successful in the Mesozoic as major predators in the sea. There were more than a dozen groups of marine reptiles in the Mesozoic, of which four had more than 30 genera, namely sauropterygians (including plesiosaurs), ichthyopterygians, mosasaurs, and sea turtles.

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“…La comprensión de estos cambios permitirá delimitar las innovaciones evolutivas claves que le permitieron a los metriorrínquidos la conquista, sin paralelo entre los arcosaurios, del medio pelágico. Fernández, 2005, 2011 1913; Hua and Buffrénil, 1996;Young et al, 2010), and enlarged external carotid foramen and canal, enlarged and highly vascularised nasal salt gland, preorbital fenestra related with the drainage of salt gland, and reduced olfactory tract and bulbs Gasparini, 2000, 2008;Fernández and Herrera, 2009;Pol and Gasparini, 2009;Fernández et al, 2011;Herrera et al, 2013a;Herrera and Vennari, 2015). Metriorhynchidae is a Middle Jurassic to…”

Section: Discussion and Final Remarksunclassified

Reptiles Extintos - Volumen en Homenaje a Zulma Gasparini

2015

PE-APA

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Bone histology as a clue in the interpretation of functional adaptations in the Thalattosuchia (Reptilia, Crocodylia)

Cited by 112 publications

References 42 publications

Preliminary observations on the bone histology of the Middle Triassic pseudosuchian archosaurBatrachotomus kupferzellensisreveal fast growth with laminar fibrolamellar bone tissue

Preliminary observations on the bone histology of the Middle Triassic pseudosuchian archosaurBatrachotomus kupferzellensisreveal fast growth with laminar fibrolamellar bone tissue

The Evolution of Marine Reptiles

Reptiles Extintos - Volumen en Homenaje a Zulma Gasparini

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