Un siècle de paléontologie des échinodermes gravé dans les Annales de Paléontologie

Néraudeau, Didier

doi:10.1016/j.annpal.2006.03.004

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Bat "fossil brains" were even among the first mammalian natural endocasts to be studied after paleoneurology basics were proposed by Edinger (1929Edinger ( , 1949. However, the first studies on the natural endocasts of bats only briefly described the external shape of the brain of extinct representatives of extant families (Dechaseaux, 1956(Dechaseaux, , 1962(Dechaseaux, , 1970(Dechaseaux, , 1973Edinger, 1926Edinger, , 1929Edinger, , 1961Edinger, , 1964aEdinger, , 1964b.…”

Section: Introductionmentioning

confidence: 99%

Anatomical correlates and nomenclature of the chiropteran endocranial cast

Maugoust

Orliac

2023

The Anatomical Record

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Bats constitute a diverse group of mammals highly specialized toward active flight and ultrasound echolocation. These adaptations reflect on their morpho-anatomy and have been tentatively linked to brain morphology and volumetry. Despite their small size and delicateness, bat skulls and natural braincase casts have been preserved in the fossil record and allow for investigating brain evolutionary history and inferring paleobiology. Recent progresses in imaging techniques now allow for virtually extracting internal structures, assuming that the shape of internal cavity casts reflects soft organ morphology. Such a correspondence is not straightforward regarding the braincase cast ("endocast"), because meninges and vascular tissues surround the brain in living organisms and the resulting endocast morphology is a mosaic of the marks left by all these tissues. The hypothesis that the endocast reflects the brain in terms of both external shape and volume has drastic implications when addressing brain evolution, but has been little discussed. To date, a single work addressed the correspondences regarding brain and braincase in bats. Here, taking advantage of the advent of imaging techniques, we review the anatomical, neuroanatomical, and angiological literature and compare the available knowledge of bat's braincase anatomy to a sample of endocranial casts representing most modern bat families. Such comparison allows for proposing a Chiroptera-scale nomenclature for future descriptions and comparisons of bat endocasts. This also encourages further works to formally test what is hypothesized here.

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