Genus: Mastodonsaurus non JAEGER, 1833

Species: laniarius (OWEN, 1842) (nomen vanum)
Etymology:
= Labyrinthodon laniarius OWEN, 1842 (nomen vanum)
= Labyrinthodon lanairus ROMER, 1947 (sic)

Holotype: Current location unknown (SCHOCH & MILNER, 2000)

Locality: Cotton-end quarry in the Warwick Sandstone, Warwickshire County, England, Southern United Kingdom.

Horizon: Bromsgrove Sandstone Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material: Tooth.
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Species: ventricosus (OWEN, 1842) KUHN, 1933 (nomen vanum)
Etymology:
= Labyrinthodon ventricosus OWEN, 1842 (nomen vanum)

Holotype: Current location unknown (SCHOCH & MILNER, 2000)

Locality: Cotton-end quarry in the Warwick Sandstone, Warwickshire County, England, Southern United Kingdom.

Horizon: Bromsgrove Sandstone Formation.

Biostratigraphy:

Age: Anisian Stage, Lower Mid Triassic Epoch, Middle Triassic.

Material: Tooth.

Referred material:

HUENE, 1908

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

Horizon: Lower Keuper.

Biostratigraphy:

Age: Late Triassic.

Material:

Number: Not given:

= Labyrinthodon conicus MEYER, 1855 (attributed to OWEN, 1841)

Note: Maybe the same as the above.

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Species: indicus LYDEKKER, 1890 (nomen nudum)
Etymology:

Holotype: IM.H20/6 (BMNH R596)

Locality: Jhirpa, Gondwanas, on the Denwa river, Satpura district, Madhya Pradesh State, Central India.

Horizon: Denwa beds.

Biostratigraphy:

Age: Middle Triassic.

Material: Fragmentary right thoracic plate.