Species: crosbiensis CASE, 1922
Etymology: In reference to Crosby County, Texas.
= Rutiodon crosbiensis (CASE, 1922)

Holotype: UMMP 7522

Locality: Blanco River, Crosby County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Late Tuvalian Substage, Late Carnian Stage, Late Triassic Epoch, Late Triassic.

Material: Skull.

Referred material:

LONG & MURRY, 1995

Locality: Fossil Garden, PEFO 085003 (UCMP V82252, PF98) (part of UCMP V7034), 6 to 8 m below? Sonsela Sandstone, Devil’s Playground Area, Petrified Forest, Apache County, Arizona.

Horizon: Lower Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

UCMP 27181: Juvenile skull, complete with vertebrae and scutes.

 

Locality: Crystal Forest Butte (PF 173), Sonseal Sandstone level, purple-cream level, about 12 m below brown-grey cherty unionid bed, Crystal Forest Area, Petrified Forest, Apache County, Arizona.

Horizon: Lower Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

UCMP 1236922, 126988: Left squamosals.

 

Locality: Long Logs (UCMP V82042, PF17), approximate level of Rainbow Sandstone, about 11 sto 12 m below Flattops Sandstone 1, Long Logs Area, Petrified Forest, Apache County, Arizona.

Horizon: Middle Painted Desert Member, Upper Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

UCMP 126745: Left squamosal.

 

Locality: Lukachukai W (UCMP A270), Lukachukai Trading Post, 10 km west of Lukachukai, lower level, Lukachukai Area, Petrified Forest, Apache County, Arizona.

Horizon: Lower Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

UCMP 27195, 27192: Left squamosals.

 

Locality: Depot Tank NW, PEFO 08510 (UCMP V3923, PF 106), Depot Tank Area, Petrified Forest, Apache County, Arizona.

Horizon: Lower Petrified Forest Formation, Chinle Group.

Biostratigraphy:

Age: Latest Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

MSM 92-023.001: Complete skull and lower jaws colleted by Pratt Grerr.

 

Locality: Five miles (8 km) northwest of Saddleback Mountain, west of Tascosa, south side of Canadian River, Oldham County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

PPHM WT 3243: Skull.

 

Locality: Espuela Ranch, Dickens County (TMM Locality 1010), Dickens County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

TMM 1010-5: Left and right squamosal from 2 individuals.

 

Locality: TMM Site 2 (TMM Locality 31171), Crosby County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

TMM 31171-120: Skull.

TMM 31171-121: Skull.

 

Locality: Crosby County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

TMM 31173-120: Skull.

Leptosuchus cf. crosbiensis
= Phytosaurus doughtyi CASE, 1920
= Phytosaurus (Machaeroprosopus) doughtyi CASE, 1920 (note, Case uses both Phytosaurus doughtyi in the illustrations and Phytosaurus (Machaeroprosopus) doughty in the text.
= Rutiodon doughtyi (CASE, 1920)
= Machaeroprosopus doughtyi (CASE, 1920)
Etymology:

Holotype:

Locality: Post City, Texas.

Horizon: Dockum Formation.

Biostratigraphy:

Age: Carnian-?Rhaetian Stage, Late Triassic Epoch, Late Triassic.

Material: Posterior portion of skull.

 

= Leptosuchus imperfecta CASE, 1922
Etymology:
= Rutiodon imperfecta (CASE, 1922)

Holotype: UMMP 7523

Locality: Spur-Crosbyton Road, west of White River, probably on the Swensen Ranch, Crosby County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material: Skull.

_____________________________________________________________________________________

= Leptosuchus studeri CASE & WHITE, 1934
Etymology:
= Rutiodon studeri (CASE & WHITE, 1934)

Holotype: UMMP 14267

Locality: Cerita de la Cruz ("Sweetly Cruz," of local parlance) Creek about 23 miles northwest of Amarillo, Potter County, Texas. (According to LONG & MURRY, 1995, Northeast of Rotten Hill, near breaks of Sierrita de la Cruz Creek, Probably easternmost Oldham County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material: Skull.

Referred material:

UMMP 14366, 12198, TTUP 383: Skulls.

Locality: Crosby County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

TTU P8091: Skull.

TTU P8092: Skull.

 

Locality: Rotten Hill/Sierrita de la cruz, 35°23’06''N, 102°09'40''W, badlands along Sierrita de la Cruz Creek, Ady 7.5' Quadrangle, Potter County, Texas.

Horizon: Tecovas Member, Dockum Formation.

Biostratigraphy:

Age: Carnian Stage, Late Triassic Epoch, Late Triassic.

Material:

Number: Not given: Skull.

_____________________________________________________________________________________