Eocene Glass-Lizard Ophisaurus (Anguidae) from the British Islands

Meszoely, Charles A. M.; Ford, R. L.

doi:10.2307/1443983

Cited by 12 publications

(10 citation statements)

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“…The hypothesized sister taxon to ''Placosaurus'' estesi, ''Placosaurus'' mongoliensis is known from the Late Eocene of eastern Asia. Given the presence of isolated skeletal elements from northern regions (Meszoely and Ford, 1976;Estes and Hutchison, 1980), it is clear that anguids were using polar or near-polar dispersal routes offered by the relatively equable Eocene climate. Paraplacosauriops quercyi (France) and Peltosaurus granulosus (western United States) are sister taxa.…”

Section: Anguid Evolution and Biogeographymentioning

confidence: 99%

The braincases of two glyptosaurines (anguidae, Squamata) and anguid phylogeny

Conrad¹,

Norell²

2008

Am Museum Novitates

452

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Section: Anguid Evolution and Biogeographymentioning

confidence: 99%

The braincases of two glyptosaurines (anguidae, Squamata) and anguid phylogeny

Conrad¹,

Norell²

2008

Am Museum Novitates

452

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“…Osteoderms from non−monstersaurians are typically flat (plate−like), predictably thin, and rectangular to trapezoid in shape, as seen in Anguidae (see general descriptions in Hoff− stetter 1962;Meszoely and Ford 1976;Strahm and Schwartz 1977;Richter 1994;Mead et al 1999). Anguine imbricating osteoderms can have intricate sculpturing, some with well− defined keels (Fejérváry−Lángh 1923;Meszoely 1970;Gau− thier 1982;Augé 2005).…”

Section: Osteodermsmentioning

confidence: 99%

Warm Climate in the Late Miocene of the South Coast of Alaska and the Occurrence of Podocarpaceae Pollen

Reinink-Smith

Leopold

2005

Palynology

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“…D and ), as well as many other finds within the Ophisaurus clade like Ophisaurus sp. from the late Eocene of England (Meszoely and Ford, ; cf. Anguine Morphotype B, Klembara and Green, ), Ophisaurus sp.…”

Section: Discussion and Comparisonmentioning

confidence: 99%

Vertebral Comparative Anatomy and Morphological Differences in Anguine Lizards With a Special Reference to Pseudopus apodus

Čerňanský

Yaryhin

Ciceková

et al. 2018

The Anatomical Record

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The article reports on the first detailed vertebral and rib morphology of anguine taxon Pseudopus apodus using micro-computed tomography. A comparison shows significant morphological differences of vertebrae of Pseudopus relative to those of Anguis and Ophisaurus. Usually, there are 55 presacral vertebrae, two sacral, and 95-97 caudal vertebrae. Pseudopus apodus can be defined by 23 diagnostic features concerning the vertebral column. Although zygapophyseal articulation between atlas and axis is well developed in limbed anguid gerrhonotine lizards like Abronia or Barisia, it is absent in the extant representatives of the clade Anguinae, which are limbless. Thus, our study brings further support to the hypothesis about the complete reduction of this articulation in forms with reduced or absent limbs. Comparison of adult and juvenile morphology of vertebrae of P. apodus was also analyzed. Heterochrony in the evolution of this taxon was previously confirmed by its skull morphology and it can be also documented on the basis of vertebrae. Our data suggest that a peramorphic heterochronic process played a role in the evolution of this largest extant anguine species. Geometric morphometric analyses revealed a pattern of high vertebral disparity among species. We found a clear separation of limbless forms in morphospace. Pseudopus apodus always clusters within Ophisaurus-species confirming molecular and some morphological phylogenies. Only the first tail vertebra shows a distinct difference to those of Jana Ciceková is currently affiliated with The Bridge Language Centre, Baštová 344/7, 811 03 Bratislava 1.

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Eocene Glass-Lizard Ophisaurus (Anguidae) from the British Islands

Cited by 12 publications

References 0 publications

The braincases of two glyptosaurines (anguidae, Squamata) and anguid phylogeny

The braincases of two glyptosaurines (anguidae, Squamata) and anguid phylogeny

Warm Climate in the Late Miocene of the South Coast of Alaska and the Occurrence of Podocarpaceae Pollen

Vertebral Comparative Anatomy and Morphological Differences in Anguine Lizards With a Special Reference to Pseudopus apodus

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