Head of Holmes Creek (Triassic to of the United States)

Also known as Home Creek, WPA, Work Project No. 15995, Swenson ranch, Site 1, Kalgary

Where: Crosby County, Texas (33.4° N, 101.1° W: paleocoordinates 6.2° N, 39.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tecovas Formation (Dockum Group), Carnian to Carnian (237.0 - 208.5 Ma)

• "Adamanian"

• bed-level stratigraphic resolution

Environment/lithology: channel lag; yellow, sandy claystone

• "evidently a bit of an old sand-bar, or an accumulation of sandy clay in some small depression which has been well leached by percolating waters"
• "yellowish sandy clay"

Size classes: macrofossils, mesofossils

Preservation: soft parts

Collected by Doughty, Case, WPA in 1919, 1921, 1940; reposited in the AMNH, UMMP

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: E. C. Case. 1920. Preliminary description of a new suborder of phytosaurian reptiles with a description of a new species of Phytosaurus. Journal of Geology 28(6):524-535 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 71976: authorized by Matthew Carrano, entered by Matthew Carrano on 18.05.2007, edited by Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

• also includes coprolites of unknown origin; also "bones and teeth of reptiles and amphibians"
Chondrichthyes
 Hybodontiformes - Lonchidiidae
Lonchidion humblei n. sp.7 Murry 1981 elasmobranch
SMUSMP 67951 (holotype), tooth. SMUSMP 66559, 66690, 67952-67954, 67462-67484, 67955
Osteichthyes
 Ceratodontiformes - Arganodontidae
"Ceratodus dorotheae n. sp." = Arganodus dorotheae3
"Ceratodus dorotheae n. sp." = Arganodus dorotheae3 Case 1921 Australian lungfish
UMMP 7324
  -
"Xenognathus obscurus n. gen. n. sp." = Colognathus obscurus5
"Xenognathus obscurus n. gen. n. sp." = Colognathus obscurus5 Case 1928 amniote
UMMP 7506
Reptilia
 Phytosauria -
Promystriosuchus ehleri n. gen. n. sp.4
Promystriosuchus ehleri n. gen. n. sp.4 archosaur
UMMP 7487
 Phytosauria - Parasuchidae
"Leptosuchus crosbiensis n. sp." = Leptosuchus crosbiensis4, "Phytosaurus doughtyi n. sp." = Leptosuchus crosbiensis
"Leptosuchus crosbiensis n. sp." = Leptosuchus crosbiensis4 Case 1922 archosaur
UMMP 7522, skull
"Phytosaurus doughtyi n. sp." = Leptosuchus crosbiensis Case 1922 archosaur
AMNH FR 4919, skull
 Pseudosuchia - Stagonolepididae
"Stagonolepis wellesi" = Calyptosuchus wellesi6
"Stagonolepis wellesi" = Calyptosuchus wellesi6 Long and Ballew 1985 aetosaur
UMMP 7470, partial skeleton with armour. UCMP 11351, scute
 Loricata - Rauisuchidae
Postosuchus kirkpatricki6 Chatterjee 1985 rauisuchid
UMMP 7266, pair of ilia with sacrum
 Diapsida - Doswelliidae
Vancleavea campi6 Long and Murry 1995 archosauromorph
UMMP 7278, anterior dorsal centrum
Amphibia
 Temnospondyli - Metoposauridae
Metoposaurus jonesi n. sp.2, "Buettneria sp." = Anaschisma1
Metoposaurus jonesi n. sp.2 Case 1920 tetrapod
UMMP 3814
"Buettneria sp." = Anaschisma1 Branson 1905 tetrapod