Genus: Diphydontosaurus WHITESIDE, 1986
Etymology:
= Perparvus ROMER, 1966 (nomen nudum)
Note: This name appeared in a list from Romer (1966) in the family Kuehneosauridae followed by Carroll (1988). Evans (2003) notes that Perparvus was an informal name used by the late Pamela Robinson for Diphydontosaurus.
Species: avonis WHITESIDE, 1986
Etymology:
Holotype: BU 23760
Locality: Tytherington Quarry (ST 660 890), 16 km north of Bristol, (ST 660890), Avon County, England, Southern United Kingdom.
Horizon: Fissure Fill.
Biostratigraphy:
Age: Carnian/Norian Stage, Upper Late Triassic Epoch, Late Triassic.
Material: Right dentary.
Paratypes:
BU 23763: Left premaxilla.
BU 23764: Right maxilla.
BU 23842: Left nasal.
BU 23787: Frontal.
BU 23789: Right parietal.
BU 23785: Left postorbital.
BU 23781: Left postfrontal.
BU 23790: Right jugal.
BU 23780: Left prefrontal.
BU 23782: Left squamosal.
BU 23783: Right quadrate with fused quadratojugal.
BU 23772: Right vomer.
BU 23776: Left palatine.
BU 23768: Left pterygoid.
BU 23774: Left ectopterygoid.
BU 23986: Basioccipital.
BU 23778: Right exsoccipital.
BU 23777: Parabasiphenoid.
BU 23761: Right articular complex.
BU 23762: Left coronid.
Referred material:
WHITESIDE & MARSHALL, 2008
BRSUG 23987: Part of left dentary.
BRSUG 23988: Part of left dentary.
BRSUG 23989: Anterior part of right dentary.
BRSUG 23900: Part of right maxilla.
FRASER, 1994
Locality: Holwell Quarry near Frome, Somerset County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Rhaetic Stage, Uppermost Late Triassic Epoch, Late Triassic or Early Jurassic.
Material:
Number: Not given: Jawbones.
KLEIN, WHITESIDE, LUCAS, VIEGAS, & BENTON, 2015
Locality: Fissure 1 in Woodlease Quarry, South Gloucestershire County, England, Southern United Kingdom.
Horizon: Rhaetian Fissure fill in Lower Carboniferous Limestone.
Biostratigraphy:
Age: Rhaetian Stage, Uppermost Late Triasisc Epoch, Late Triassic.
Material:
BRSUG 29381-98: Anterior portion o fleft dentary.
BRSUG 29381-99: Mid p9ortion of dentary.
BRSUG 29382-29: Articualr.
GALTON, 2008 (2007)
Locality: Fissure fill in Quarry Steps Quarry off Upper Belgrave Road in Clifton, Bristol, ST 572747, Bristol County, England, Southern United Kingdom.
Horizon:
Biostratigraphy:
Age: Rhaetian Stage, Latest Triassic Epoch, Late Triassic.
Material:
BRSMG/BCM Cb474: Vertebrae, ribs, shaft of long bone and jaw.
BRSMG/BCM Cb4715: Partial articulated skeleton with part of the vertebral column, a femur and complete hind limb including an intact long slender pes.
MUSSINI, WHITESIDE, HILDEBRANDT & BENTON, 2019
Locality: Fissure 2 at Tytherington Quarry, south Gloucesterhsire County, England, Southern United Kingdom.
Horizon: Fissure Fill.
Biostratigraphy:
Age: Carnian/Norian Stage, Upper Late Triassic Epoch, Late Triassic.
Material:
BRSUG 29956-1: Dentary.
BRSUG 29956-4: Humerus.
BRSUG 29956-2: Right maxilla.
Numbers: Not given: 145 specimens, including jaw fragments, cranial bones and postcranial elements.
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