Locality: allmanni HUXLEY, 1862
Etymology:

Holotype: RSM 1950.56.2

Locality: Gilmerton, near Edinburgh, mid-Lothian Province, Scotland, northern United Kingdom.

Horizon: Lower Limestone Formation, Clackmanan Group (old Gilmerton Ironstone, Lower Limestone Group).

Biostratigraphy:

Age: Brigantian, upper Visean, uppermost Dinantion, Visean Epoch, Early Carboniferous (Early Late Mississippian).

Material: Posterior portion of skull.

Syntype: RSM 1950.38.30: Part of a pectoral girdle.

Syntype: RSM 1973.59.8: An interclavicle.

Referred material:

LYDEKKER, 1890

Locality: Dawley, near Coalbrookdale, Shropshire County, England, southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Carboniferous.

Material:

BMNH R585: Fragmentary mandible.

 

Locality: Near Hamilton, Strathclyde Province, Scotland, Northern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Carboniferous.

Material:

BMNH R306: Fragmentary mandible.

 

Locality: Shelton, north Staffordshire County, England, southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Carboniferous.

Material:

BMNH R57: Tooth.

 

Locality: Northumberland County, England, southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Late Carboniferous.

Material:

BMNH R1738: Tooth.

BMNH R1739: Tooth.

 

Locality: Burdie House, near Edinburgh, Edinburgh, mid-Lothian Province, Scotland, northern United Kingdom.

Horizon: Buride House Limestone, Coal Measures.

Biostratigraphy:

Age: Westphalian, Middle Silesian series, Moscovian Epoch, Late Carboniferous (Late Pennsylvanian).

Material:

BMNH 41126: Interclavicle.

 

= Macromerion scoticum LYDEKKER, 1890
Etymology:

Holotype: BMNH R310

Locality: Gilmerton, near Edinburgh, mid-Lothian Province, Scotland, northern United Kingdom.

Horizon: Gilmerton Ironstone, Lower Limestone Group.

Biostratigraphy:

Age: Brigantian, upper Visean, uppermost Dinantion, Visean Epoch, Early Carboniferous (Early Late Mississippian).

Material: Fragmentary dentary and right ramus.

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Species: acutirhinum WATSON, 1926
Etymology:
= Loxomma acutirhinus WATSON, 1926
= Loxomma acustirostris SCHOCH & MILNER, 2014(sic)

Holotype: GSM 27107 (part) and GSM 23814 (counterpart).

Locality: Airdrie or Mushet's Black Band Ironstone, near Airdrie, Strathclyde Province, Scotland, Northern United Kingdom.

Horizon: Coal Measures.

Biostratigraphy:

Age: Westphalian B, Lower Upper Silesian series, Kashirskian Stage, Lower Moscovian Epoch, Early Middle Pennsylvanian, (Late Carboniferous).

Material: Skull.

Referred material:

Locality: Airdrie, Northumberland County, England, southern United Kingdom.

Horizon:

Biostratigraphy:

Age: Not known.

Material:

BMNH 37955: Skull.
Note: Possibly from type locality.

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Species: rankini BEAUMONT, 1977
Etymology: In honor of Dr. D. R. Rankin, who collected the specimen.

Holotype: GLAHM V2023

Locality: Castlechill, near Carluke, Strathclyde Province, Scotland, Northern United Kingdom.

Horizon: Drumgray Coal, Lower Coal Measures.

Biostratigraphy:

Age: Westphalian A, Middle Silesian Series, Upper Bashkirian – Lower Moscovian Epoch, Middle Carboniferous (Middle Pennsylvanian).

Material: Skull table, left cheek region and posterior half of right jaw ramus.

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Species: lintonensis (BEAUMONT, 1977) SCHOCH & MILNER, 2014
Etymology: In honor of the Linton locality, Jefferson County, Ohio.
= Baphetes lintonensis BEAUMONT, 1977
= Sauropleura newberry COPE, 1875 (paratype)
= Macrerpeton huxleyi ROMER, 1930 (referred to)

Holotype: AMNH 6944 (part and counterpart)

Locality: Linton locality (Coal mines originally owned by the Ohio Diamond Coal Company), NE corner Sect. 13, T9N, R2W, Linton near Wellsvile, west bank near mouth of Yellow Creek, Saline Township, Jefferson County, Ohio.

Horizon: Canneloid shale underlying Upper Freeport Coal, Allegheny Group.

Biostratigraphy:

Age: Upper Westphalian D, Lower Upper Silesian series, Myachkovskian stage, Upper Moscovian Epoch, Middle Pennsylvanian (Late Carboniferous).

Material: Skull of a juvenile.