The Rhaetian (Late Triassic) vertebrates of Hampstead Farm Quarry, Gloucestershire, UK

Mears, Ellen M.; Rossi, Valentina; Macdonald, S. Ellen; Coleman, Gareth; Davies, Thomas G.; Arias-Riesgo, Caterine; Hildebrandt, Claudia; Thiel, Heather; Duffin, Christopher J.; Whiteside, David I.; Benton, Michael J.

doi:10.1016/j.pgeola.2016.05.003

Cited by 31 publications

(40 citation statements)

References 43 publications

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“…The dorsal surface is worn, but retains some enamel, which is ridged diagonally. This is similar to the morphotype S2 osteichthyan scale illustrated by Mears et al (2016, fig. 10c, d) from Hampstead Farm Quarry, Chipping Sodbury.…”

Section: Other Actinopterygian Remainssupporting

confidence: 84%

“…The enamel is diagonally ridged, as in morphotypes 1 and 2, but in most specimens the enamel has been completely worn away to leave a series of concentric rings on the dorsal surface. This is similar to the internal view of a morphotype S4 osteichthyan scale illustrated by Mears et al (2016, fig. 10g, h) from Hampstead Farm Quarry, Chipping Sodbury.…”

Section: Other Actinopterygian Remainssupporting

confidence: 84%

“…These morphotypes were figured by Duffin (1998aDuffin ( , 1999 fig. 2) and Mears et al (2016, fig. 5n).…”

Section: Unidentified Teethmentioning

confidence: 96%

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The first discovery of crinoids and cephalopod hooklets in the British Triassic

Landon

Duffin

Hildebrandt

et al. 2017

Proceedings of the Geologists' Association

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Section: Other Actinopterygian Remainssupporting

confidence: 84%

Section: Other Actinopterygian Remainssupporting

confidence: 84%

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The first discovery of crinoids and cephalopod hooklets in the British Triassic

Landon

Duffin

Hildebrandt

et al. 2017

Proceedings of the Geologists' Association

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“…Simple, pointed, conical teeth and thick scales with striated ganoine layer 180 marine Allard et al 2015;Cavicchini et al 2018;Diedrich 2003Diedrich , 2009Landon et al 2017;Nordén et al 2015;Whiteside et al 2016 Severnichthys acuminatus "Saurichthys"-and "Birgeria"-type teeth; conical teeth with fine, apicobasal striae below and on the cap 28 marine Allard et al 2015;Cavicchini et al 2018;Korneisel et al 2015;Nordén et al 2015;Mears et al 2016;Whiteside et al 2016 Actinopterygii indet. Gyrolepis sp.…”

Section: Mineralogical Composition Based On X-ray Powder Diffraction mentioning

confidence: 99%

Sedimentological Characteristics And Paleoenvironmental Implication Of Triassic Vertebrate Localities In Villány (Villány Hills, Southern Hungary)

Botfalvai¹,

Győri²,

Pozsgai³

et al. 2019

Geologica Carpathica

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There are two Triassic vertebrate sites in Villány Hills (Southern Hungary), where productive and continuous excavations have been carried out in the last six years resulting in a rich and diversified assemblage of shallow marine to coastal animals. The studied formations belong to the Villány–Bihor Unit of the Tisza Megaunit, which was located at the passive margin of the European Plate during the Triassic. The relatively diverse vertebrate assemblage was collected from a Road-cut on Templom Hill and a newly discovered site at a construction zone located on the Somssich Hill. Four main lithofacies were identified and interpreted in the newly discovered Construction vertebrate site consisting of dolomite (deposited in a shallow, restricted lagoon environment), dolomarl (shallow marine sediments with enhanced terrigenous input), reddish silty claystone (paleosol) and sandstone (terrigenous provenance) indicating that the sediments of the Construction vertebrate site were formed in a subtidal to peritidal zone of the inner ramp environment, where the main controlling factor of the alternating sedimentation was the climate change. However, the recurring paleosol formation in the middle part of the section also indicates a rapid sea-level fall when the marine sediments were repeatedly exposed to subaerial conditions. In the Road-cut site the siliciclastic sediments of the Mészhegy Sandstone Formation are exposed, representing a nearshore, shallow marine environment characterized by high siliciclastic input from the mainland.

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“…Most specimens have come from the Westbury Formation (Penarth Group) of Gloucestershire. These include isolated vertebral centra, which are the most common finds, although other elements, such as ribs, limb bones, skull bones, and teeth, have been found, but can only be referred to Ichthyosauria indet (Benton & Spencer, ; Mears et al, ; Storrs, , ). Other indeterminate, isolated specimens from the Westbury Formation, including teeth, phalangeal elements, and vertebrae, have been reported from quarries in Nottinghamshire (Lomax & Gibson, ; Martill & Dawn, ; Sykes, Cargill, & Fryer, ) and Leicestershire (Harrison, ).…”

Section: Triassic Ichthyosaurs From the Ukmentioning

confidence: 99%

An ichthyosaur from the UK Triassic–Jurassic boundary: A second specimen of the leptonectid ichthyosaur Wahlisaurus massarae Lomax 2016

Lomax

Evans

Carpenter³

2018

Geological Journal

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The holotype of Wahlisaurus massarae is known only from a partial skull and postcranial skeleton from the Lower Jurassic, collected near Normanton on Soar, Nottinghamshire, UK. It is diagnosed relative to other ichthyosaurs on the basis of autapomorphies of the coracoid and a unique combination of characters. Here, we report a second specimen of W. massarae. The new specimen comprises a practically complete right coracoid that clearly shows the unique morphology of W. massarae. This specimen was collected in situ from a quarry in Somerset, from the base of the Blue Lias Formation, which corresponds to the Triassic-Jurassic boundary (uppermost Rhaetian or lowermost Hettangian), extending the geographic and stratigraphic range of the species. Furthermore, the coracoid of the new specimen is 20% anteroposteriorly longer than in the holotype, representing a larger individual. In light of preparation and the identification of additional fragments of the holotype, a redescription of the skull morphology of the holotype, as well as comparison with the skull roof of Leptonectes tenuirostris, is included.

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The Rhaetian (Late Triassic) vertebrates of Hampstead Farm Quarry, Gloucestershire, UK

Cited by 31 publications

References 43 publications

The first discovery of crinoids and cephalopod hooklets in the British Triassic

The first discovery of crinoids and cephalopod hooklets in the British Triassic

Sedimentological Characteristics And Paleoenvironmental Implication Of Triassic Vertebrate Localities In Villány (Villány Hills, Southern Hungary)

An ichthyosaur from the UK Triassic–Jurassic boundary: A second specimen of the leptonectid ichthyosaur Wahlisaurus massarae Lomax 2016

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