Species: linearis COPE, 1871
Etymology:

Holotype: AMNH 6966

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: Fragmentary skull and fragmentary skeleton.

Counterpart: AMNH 6886

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Species: longissima (FRITSCH, 1875)
Etymology:
= Dolichosoma longissima FRITSCH, 1875
Etymology:

Holotype: CGH 129

Locality: Nyrany (Nurschan), Plzen Basin, Bohemia, Czech Republic.

Horizon: Gaskohl.

Biostratigraphy:

Age: Upper Westphalian D, Lower Upper Silesian Series, Desmoniensean, Upper Myachkovskian Stage, Upper Moscovian Epoch, Late Carboniferous (Late Pennsylvanian).

Material: Fragmentary skull and fragmentary skeleton.

Electrotypes:

BMNH R360: Fragmentary skeleton.

BMNH R361: Fragmentary skull and cervical vertebrae.

Galvanotype:

UMMP 22278 (of CGH 129): Skull and anterior 16 vertebrae.

UMMP 2228 (of CGH 129): 130 vertebrae in a broken series.

Referred material:

ANDERSON, 2002

NMW 1896 II 34: Nearly complete specimen, part and counterpart.

 

= Phlegethontia linearis COPE, 1871 (partim)
Note: The following were referred to this species but ANDERSON, 2002 referred them to P. longissima.

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:

AMNH 2564: Fragmentary skull and fragmentary skeleton.
Note: Cocyntinus of MOODIE, 1916

AMNH 6884: Series of articulated small vertebrae.

MCZ 2135: With counterpart, Scattered vertebrae, ribs, jaws, and skull elements.

MCZ 2300: Large precaudal and caudal vertebrae.

MCZ 2134: Series of articulated small precaudal vertebrae.

MCZ 2038: Fragmentary skull.

MCZ 2334: Braincase.

MCZ 2301: Fragmentary skull and fragmentary skeleton.

CM 23,053: Fragmentary skull and fragmentary skeleton.

PU 16537: Articulated lower jaws and scattered skull bones.

PU 16536: Disassociated medium-sized vertebrae, with fragments of paleoniscoid fish hand "Kammplatten."

PU 18737: Series of articulated medium-small precaudal vertebrae.

FMNH PR 826: Cast of type.

ANDERSON, 2002

AMNH 6913: Vertebrae and ribs.

CM 44759: Small skull and attached jaws in lateral view, part and counterpart.

CM 68307: 41 vertebrae and ribs.

CM 68336: Disarticualted skull, part and counterpart.

CM 68338: Disarticualted skull and 14 vertebrae.

USNM 4484: Disarticulatd skull and anterior vertebrae.

 

ANDERSON, 2007

Locality: Pit 11, Peabody Coal Company, Will County, Illinois.

Horizon: Essex Nodule fauna, Frances Creek Shale.

Biostratigraphy:

Age: Middle Silesian series, Westephalian C, Podolskian stage, or Westephalian D, Myachkovskian stage, Moscovian Epoch, Middle Pennsylvanian (Middle Carboniferous).

Material:

ROM 48445: Skull and partial skeleton.

 

= Molgophis macrurus COPE, 1868 (partim)
Etymology:

Holotype:

Locality:

Horizon:

Material:

 

= Phlegethontia serpens COPE, 1874
Etymology:

Holotype: AMNH 6899

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: 21 articulated posterior precaudal vertebrae with ribs.

 

=Aornerepton mazonensis (GREGORY, 1948) LUND, 1978
Etymology:
= Phlegethontia mazonensis GREGORY, 1948

Holotype: USNM Div. Vertebrate Paleontology n. 17097

Locality: Pit 11, Peabody Coal Company, Will County, Illinois.

Horizon: Essex Nodule fauna, Frances Creek Shale.

Biostratigraphy:

Age: Middle Silesian series, Westephalian C, Podolskian stage, or Westephalian D, Myachkovskian stage, Moscovian Epoch, Middle Pennsylvanian (Middle Carboniferous).

Material: Fragmentary skull and fragmentary skeleton.

Counterpart:

Referred material:

FMNH PR 302: Cast of type.

ANDERSON, 2002

FMNH PR 1358: Skull and anterior vertebrae in latera view, part and counterpart.

FMNH PR 624: Skull and anterior half of specimen, part and counterpart.

FMNH PR 831: Nearly complete specimen, diminutive individual, part and counterpart.

FMNH PR 1145: Skull and anterior half of specimen, faint body impression, diminutive individual in part and counterpart.

LUND, 1978

FM MCP 501: Fragmentary skull and fragmentary skeleton.

MCZ 2204: Fragmentary skull.

GODFREY, 1997

NEIU MCP 367: Fragmentary specimen.

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Species: phanerhapha THYER, 1985 (nomen dubium)
Etymology:

Holotype: UALP 5154

Locality: UALP 7205, Swisshel Mountains, Cochise County, Arizona.

Horizon: Black Prince Limestone, one meter below contact with overlying Pennsylvanian Horquilla limestone.

Biostratigraphy:

Age: Late Morrowan or earliest Derryan (equivalent to Langsettian – Duckmantia boundary), Westephalian, lower upper Silesian, upper Bashkrian or lower Moscovian Epoch, early Pennsylvanian (Late Carboniferous).

Material: A posterior braincase fragment including a notochordal pit, the right exoccipital, and part of the right posterior otic capsule.

Referred specimen:

UALP 6035: A precaudal vertebra.