Species: pachygnathus (OWEN, 1842) PATON, 1974
Etymology: Greek, pachys, “thick” and Greek, gnathus, “jaw.”
= Labyrinthodon pachygnathus OWEN, 1842
= Diadetognathus pachygnathus (OWEN, 1842) OWEN, 1874
= Mastodonsaurus pachygnathus MAILL, 1874 (partim)

Holotype: GZ 14

Locality: Rock Hill (SO 948698, Bromsgrove, near Brimingham, Warwickshire County, England, Southern United Kingdom.

Horizon: Upper Bromsgrove Sandstone Formation.

Biostratigraphy:

Age: Ladinian Stage, Upper Mid Triassic Epoch, Middle Triassic.

Material: Right otic notch.

Referred martial:

MIALL

Interobital tract.

Postero-external oribital margin.

WARMAS GZ 13: Posterior-external angle of skull.

Postero-external angel of skull.

Position of occipital border.

Gz 26: Part of right ramus mandible.

 

HUENE, 1908

Locality: Warwick, Warwickshire County, England, Southern United Kingdom.

Horizon: Lower Keuper.

Biostratigraphy:

Age: Late Triassic.

Material

Number: Not given:

PATON, 1974

Locality: England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material:

GZ 36: Left maxilla and intermaxilla with the palatal plate.

 

= Mastodonsaurus jaegeri HUXLEY, 1859
Etymology:

Holotype: GSM 27964

Locality: England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material: Posterior end of a left lower jaw from the middle of the adductor fossa.

 

= ?Diadetognathus WILLIS, 1915

Locality: England, Southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material:

BSp 2: Posterior end of a right lower jaw from the anterior end of the adductor fossa.

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Species: albertyni BROOM, 1904 (nomen dubium)
Etymology:
= Parotosaurus albertyni (BROOM, 1904) ROMER, 1947 (nomen dubium)

Holotype: SAM-PK-K1876

Locality: Rouxvile, Free (Orange Free) State, South Africa.

Horizon: Burgersdorp Formation, Tarkastad Subgroup.

Biostratigraphy: Cynognathus zone.

Age: Spathian Stage, uppermost Scythian Epoch to Anisian Stage, lowermost Mid Triassic Epoch, Early to Middle Triassic.

Material: Fragmentary skull.

Referred material:

Number: Not given: Fragments.

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Species: mechernichensis JUX & PFLUG, 1958
Etymology: In reference to Mechernich, North Rhine-Westphalia State, Germany.
= Procyclotosaurus mechernichensis (JUX & PFLUG, 1958)
= Parotosaurus mechernichensis (JUX & PFLUG, 1958) JUX, 1966
= Subcyclotosaurus mechernichensis (JUX & PFLUG, 1958) JUX, 1966
= Parotosuchus mechernichensis (JUX & PFLUG, 1958) SANDER & GEE, 1994

Holotype:

Locality: Virgina mine, Mechernich, North Rhine-Westphalia State, Germany.

Horizon: ?Upper Buntsandstein.

Biostratigraphy:

Age:

Material: Middle Triassic.

Referred material:

Locality: Tagebau Virginia Gewerkschaft Mechernicher Werke near Mechernich, Eifel, West Germany.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material:

Number: Not Fragmentary skull.