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Bellairsia information


Bellairsia
Temporal range: Middle Jurassic Bathonian
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Skull diagram
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Genus: †Bellairsia
Evans 1998
Species:
†B. gracilis
Binomial name
†Bellairsia gracilis
Evans, 1998

Bellairsia is an extinct genus of stem-squamate known from a single species, Bellairsia gracilis, from the Middle Jurassic (Bathonian) of England and Scotland. It is amongst the oldest squamates known. It was originally described in 1998 by Susan E. Evans from disarticulated individual bones, including the holotype dentary, collected from the Forest Marble Formation in Kirtlington Quarry, Oxfordshire, England. It was named in honor of British herpetologist and vertebrate anatomist Angus Bellairs. In 2022, a partial 70% complete skeleton was described from the equivalently aged Kilmaluag Formation of the Isle of Skye, Scotland. The partial skeleton had an estimated snout-vent length of around 6–7 centimetres (2.4–2.8 in). While originally considered a member of Scincomorpha, the 2022 study recovered it to be a stem-group squamate, with the phylogeny recovering it as part of a weakly supported clade also containing Huehuecuetzpalli and Oculudentavis.[1][2]

  1. ^ S. E. Evans. 1998. Crown group lizards (Reptilia, Squamata) from the Middle Jurassic of the British Isles. Palaeontographica Abteilung A 250:123-154
  2. ^ Tałanda, Mateusz; Fernandez, Vincent; Panciroli, Elsa; Evans, Susan E.; Benson, Roger J. (2022-10-26). "Synchrotron tomography of a stem lizard elucidates early squamate anatomy". Nature. 611 (7934): 99–104. doi:10.1038/s41586-022-05332-6. ISSN 0028-0836. PMID 36289329. S2CID 253160713.

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Bellairsia

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†Vellbergia? Pan-Squamata †Sophineta? †Megachirella? †Marmoretta? †Tamaulipasaurus? †Hongshanxi †Bellairsia †Oculudentavis †Huehuecuetzpalli Squamata...

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"The Best of the Good". The New York Times. Retrieved September 4, 2018. Discussion of the book at www.bellairsia.com Once Upon a Midnight Scary at IMDb...

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Oculudentavis

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molecular data was removed. A 2022 description of the Middle Jurassic lizard Bellairsia by Tałanda et al. found Oculudentavis to be a stem-group squamate, forming...

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Megachirella

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†Ardeosaurus †Bavarisaurus †Bellairsia †Dalinghosaurus †Eichstaettisaurus †Gephyrosaurus? †Hongshanxi †Hoyalacerta †Huehuecuetzpalli †Kuroyuriella †Marmoretta...

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Taytalura

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than Taytalura. A 2022 study described new material of the stem-squamate Bellairsia and briefly classified Taytalura as a non-lepidosauromorph, closer to...

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Marmoretta

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Kuehneosauridae

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Ankylopoda

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John Bellairs

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House with a Clock in its Walls". The Verge. Retrieved March 27, 2018. Bellairsia | blog | forum – celebrating John Bellairs John Bellairs at Find a Grave...

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Tamaulipasaurus

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Fraxinisaura

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The Dark Secret of Weatherend

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between the weather and what's happening out at the justly named Weatherend estate. Discussion of The Dark Secret of Weatherend at www.bellairsia.com v t e...

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Sophineta

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Eolacertilia

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The Treasure of Alpheus Winterborn

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Characteristics, Moods, Themes and Related | AllMovie, retrieved 2023-11-10 Discussion of The Treasure of Alpheus Winterborn at www.bellairsia.com v t e...

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Kilmaluag Formation

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dentary, partial right maxilla and a partial right prefrontal" Squamate Bellairsia B. gracilis "dentary and parts of other bones scattered on a slab" Stem-squamate...

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Lacertulus

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Feralisaurus

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Vellbergia

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Saurosternon

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Forest Marble Formation

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Notes Images Balnealacerta B. silvestris Kirtlington Scincomorph lizard Bellairsia B. gracillis Kirtlington Squamate Eophis E. underwoodi Kirtlington Stem-snake...

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Cargninia

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Angus Bellairs

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egg tooth of snakes, and the snout of the gharial. The fossil lizard Bellairsia was named after him by Professor Susan E. Evans. Gans, Carl (1991). "Angus...

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