NMMNH L-1430, Upper Kalgary (Triassic of the United States)

Also known as Dockum Formation

Where: Crosby County, Texas (33.4° N, 101.2° W: paleocoordinates 8.1° N, 41.4° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Tecovas Formation (Chinle Group), Norian (228.0 - 208.5 Ma)

• "NMMNH locality 1430 is in the lower part of the Tecovas, 11.25 m above the base of the Dockum Formation."

• group of beds-level stratigraphic resolution

Environment/lithology: channel lag; micaceous, gray, green, silty sandstone and ferruginous, pebbly, peloidal, shelly/skeletal, red, yellow, calcareous conglomerate

• channel to point-bar deposits
• Unit 5. Sandstone and mudstone-/siltstone-pebble conglomerate; sandstone is light greenish gray, weathers to pale yellowish brown, very fine grained, subrounded, well sorted, quartzose, slightly micaceous and trough crossbedded; the conglomerate is at trough bases and consists of mudstone and siltstone pebbles that are dark reddish brown with dusky yellow mottles and calcareous; fossil bones, teeth, coprolites and ostracodes are common at the top of the unit (NMMNH locality 1430).

Size classes: macrofossils, mesofossils

Preservation: coprolite

Reposited in the NMMNH

Collection methods: bulk, sieve,

• "More than three metric tons of sediment...were screenwashed."

Primary reference: S. G. Lucas and Z. Luo. 1993. Adelobasileus from the Upper Triassic of west Texas: the oldest mammal. Journal of Vertebrate Paleontology 13(3):309-334 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13266: authorized by John Alroy, entered by Robin Whatley on 05.02.2002, edited by Kaitlin Maguire, Matthew Carrano and Richard Butler

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Spirorbidae indet.
Spirorbidae indet.
NMMNH P-26446; "spirorbid worms" (probably vermetiform gastropods)
 Vertebrata -
Vertebrata indet.2
Vertebrata indet.2 vertebrate
NMMNH P-34160, 34390-91
Gnathostomata
  -
Osteichthyes indet.2
Osteichthyes indet.2 bony fish
NMMNH P-26368, 26372-74
Amphibia
 Temnospondyli -
Temnospondyli indet.2
Osteichthyes
  -
Colognathus obscurus2
Colognathus obscurus2 Case 1928 amniote
NMMNH P-26418, 26442
Reptilia
  -
Reptilia indet.2
Reptilia indet.2 Laurenti 1768 reptile
NMMNH P-25756, 26327, 26348, 26321, 26323-30, 26332-34, 26336-39, 26341, 26343, 26348, 26356, 26362-64, 34421, 34423, 41487-89
 Diapsida -
Archosauromorpha indet.2, Trilophosaurus buettneri2, Trilophosaurus jacobsi3, Archosauriformes "indet. J"2, Archosauriformes "indet. K"2, Archosauriformes "indet. L"2, Archosauriformes "indet. M"2, Archosauriformes "indet. Q"2, Archosauriformes "indet. R"2, Archosauriformes "indet. S"2, Archosauriformes "indet. H"2, Archosauriformes "indet. T"2, Archosauriformes indet.1, Archosauriformes indet.1, Archosauriformes indet.6, Tecovasaurus murryi n. gen. n. sp.4
Archosauromorpha indet.2 archosauromorph
NMMNH P-26437
Trilophosaurus buettneri2 Case 1928 archosauromorph
Trilophosaurus jacobsi3 Murry 1987 archosauromorph
NMMNH P-34073, 34372
Archosauriformes "indet. J"2 Gauthier 1986 archosauromorph
NMMNH P-26399, 34415
Archosauriformes "indet. K"2 Gauthier 1986 archosauromorph
NMMNH P-34418
Archosauriformes "indet. L"2 Gauthier 1986 archosauromorph
NMMNH P-34417
Archosauriformes "indet. M"2 Gauthier 1986 archosauromorph
NMMNH P-34419
Archosauriformes "indet. Q"2 Gauthier 1986 archosauromorph
NMMNH P-34420
Archosauriformes "indet. R"2 Gauthier 1986 archosauromorph
NMMNH P-34368
Archosauriformes "indet. S"2 Gauthier 1986 archosauromorph
NMMNH P-26438
Archosauriformes "indet. H"2 Gauthier 1986 archosauromorph
NMMNH P-26344, 34368, 34370, 34416, 41713-14
Archosauriformes "indet. T"2 Gauthier 1986 archosauromorph
NMMNH P-34371
Archosauriformes indet.1 Gauthier 1986 archosauromorph
NMMNH P-34154, 26340-41, 26443
Archosauriformes indet.1 Gauthier 1986 archosauromorph
NMMNH P-26398, 26401-02, 26393, 34369, 34382, 34405, 34152, 34407, 34410
Archosauriformes indet.6 Gauthier 1986 archosauromorph
NMMNH P-26400, 34401-03, 34421
Tecovasaurus murryi n. gen. n. sp.4 Hunt and Lucas 1994 archosauromorph
NMMNH P-18192-93, 18196, 26415, 26417
 Phytosauria - Parasuchidae
"Phytosauridae indet." = Mystriosuchinae2
"Phytosauridae indet." = Mystriosuchinae2 von Huene 1915 archosaur
 Pseudosuchia -
aff. Pekinosaurus olseni2
aff. Pekinosaurus olseni2 Hunt and Lucas 1994 aetosaur
NMMNH P-34406
 Pseudosuchia - Stagonolepididae
? Stagonolepididae indet.2
? Stagonolepididae indet.2 aetosaur
NMMNH P-34414
 Diapsida -
aff. Crosbysaurus harrisae2, Crosbysaurus harrisae2, Protecovasaurus lucasi2
aff. Crosbysaurus harrisae2 Heckert 2004 archosauromorph
NMMNH P-26394-95, 26397, 41716-19
Crosbysaurus harrisae2 Heckert 2004 archosauromorph
NMMNH P-26396, 34408-09
Protecovasaurus lucasi2 Heckert 2004 archosauromorph
NMMNH P-26441
 Eosuchia -
Lepidosauria indet.2, ? Lepidosauria indet.2
Lepidosauria indet.2 Haeckel 1866 lepidosaur
NMMNH P-26420
? Lepidosauria indet.2 Haeckel 1866 lepidosaur
NMMNH P-26419, 34381
 Eosuchia - Sphenodontidae
"aff. Clevosaurus latidens" = Fraserosphenodon latidens2
"aff. Clevosaurus latidens" = Fraserosphenodon latidens2 Fraser 1993 lepidosaur
NMMNH P-26412
 Lepidosauria -
Sphenodontia indet.2
Sphenodontia indet.2 lepidosaur
two forms
 Eosuchia -
Planocephalosaurus lucasi n. sp.2, aff. Diphydontosaurus sp.2
Planocephalosaurus lucasi n. sp.2 Heckert 2004 lepidosaur
NMMNH P-26425, 41711
aff. Diphydontosaurus sp.2 Whiteside 1986 lepidosaur
NMMNH P-26423
 Parareptilia - Procolophonidae
Procolophonidae indet.2
Procolophonidae indet.2 Lydekker 1889 parareptile
NMMNH P-34151, 26421
Osteichthyes
 Therapsida - Cynodontia
? Cynodontia indet.2, Cynodontia indet.2
? Cynodontia indet.2 cynodont
NMMNH P-34384
Cynodontia indet.2 cynodont
like Eudimorphodon
 Therapsida -
Adelobasileus cromptoni n. gen. n. sp.
Adelobasileus cromptoni n. gen. n. sp. Lucas and Hunt 1990 mammaliaform
 Therapsida - Dromatheriidae
? Dromatheriidae indet.2
? Dromatheriidae indet.2 Gill 1872 cynodont
NMMNH P-34385-86
Coelacanthimorpha
 Coelacanthiformes - Coelacanthidae
cf. Quayia zideki5
cf. Quayia zideki5 Hunt 1997 coelacanth
NMMNH P-26385
Osteichthyes
 Ceratodontiformes - Arganodontidae
Arganodus aff. dorotheae2
Arganodus aff. dorotheae2 Case 1921 Australian lungfish
NMMNH P-26385
Gnathostomata
  -
Actinopterygii indet.2, ? Actinopterygii indet.2, Actinopterygii indet.5
Actinopterygii indet.2 ray-finned fish
NMMNH P-26435, 26433, 26350-52, 26354, 26357-61, 26364-66, 26375, 34364-65, 34380, 34411, 41477-79, 41481-83
? Actinopterygii indet.2 ray-finned fish
NMMNH P-26378-80
Actinopterygii indet.5 ray-finned fish
Osteichthyes
 Palaeonisciformes - Redfieldiidae
Redfieldiidae indet.2, ? Redfieldiidae indet.2
Redfieldiidae indet.2 Hutchinson 1973
NMMNH P-26377, 34155
? Redfieldiidae indet.2 Hutchinson 1973
NMMNH P-26382
 Palaeonisciformes - Palaeoniscidae
aff. Turseodus sp.2
aff. Turseodus sp.2 Leidy 1857
NMMNH P-26366, 26369, 26376, 26470
Actinopteri
 Semionotiformes - Semionotidae
? Semionotidae indet.2
? Semionotidae indet.2 Woodward 1890
Chondrichthyes
 Xenacanthiformes - Xenacanthidae
"Xenacanthus" sp.2, ""Xenacanthus" moorei" = Triodus moorei2
"Xenacanthus" sp.2 Beyrich 1848 elasmobranch
NMMNH P-26371, 34389, 26432, 26436
""Xenacanthus" moorei" = Triodus moorei2 Woodward 1889 elasmobranch
 Hybodontiformes -
Hybodontoidea indet.2
Hybodontoidea indet.2 Agassiz 1834 elasmobranch
NMMNH P-26427, 26431, 26434
 Hybodontiformes - Lonchidiidae
Lonchidiidae indet.2, Lonchidion humblei2
Lonchidiidae indet.2 Herman 1977 elasmobranch
NMMNH P-26430, 26440, 41474-76
Lonchidion humblei2 Murry 1981 elasmobranch
NMMNH P-26429, 41471-73
 Hybodontiformes - Hybodontidae
Hybodontidae indet.2
Hybodontidae indet.2 Agassiz 1834 elasmobranch
NMMNH P-26435, 34157
 Hybodontiformes - Polyacrodontidae
Diplolonchidion murryi n. gen. n. sp.2
Diplolonchidion murryi n. gen. n. sp.2 Heckert 2004 elasmobranch
NMMNH P-34378-79, 34263
Bivalvia
 Unionida - Unionidae
Unionidae indet.
Unionidae indet. Rafinesque 1820 freshwater mussel
NMMNH P-25750, 26445
Deuteropoda
  -
Ostracoda indet.2
Ostracoda indet.2 Latreille 1802 ostracod
NMMNH P-14606-07
Ostracoda
 Podocopida - Darwinulidae
Darwinula sp.
Darwinula sp. Brady and Robertson 1885 ostracod
NMMNH P-14597-14600, 26447-51
  -
Gerdalia sp.2
Gerdalia sp.2 Belousova 1961 ostracod
NMMNH P-14601-05
unclassified
  -
Plantae indet.2
Plantae indet.2 Haeckel 1866
NMMNH P-26452, 34161 (root casts, wood)
1Butler 2010; 2Heckert 2004; 3Heckert et al. 2006; 4Hunt and Lucas 1994; 5Mutter and Heckert 2006; 6Nesbitt et al. 2007