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

unclassified
  -
Spirorbidae indet.
NMMNH P-26446; "spirorbid worms" (probably vermetiform gastropods)
Ostracoda
  -
Ostracoda indet.2 Latreille 1802 ostracod
NMMNH P-14606-07
Darwinula sp. Brady and Robertson 1885 ostracod
NMMNH P-14597-14600, 26447-51
Gerdalia sp.2 Belousova 1961 ostracod
NMMNH P-14601-05
Bivalvia
 Unionida - Unionidae
Unionidae indet. Rafinesque 1820 freshwater mussel
NMMNH P-25750, 26445
 Vertebrata -
Vertebrata indet.2 vertebrate
NMMNH P-34160, 34390-91
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 Zangerl 1981 elasmobranch
NMMNH P-26427, 26431, 26434
 Hybodontiformes - Polyacrodontidae
Diplolonchidion murryi n. gen. n. sp.2
Diplolonchidion murryi n. gen. n. sp.2 Heckert 2004 elasmobranch
NMMNH P-34378-79, 34263
 Hybodontiformes - Hybodontidae
Hybodontidae indet.2 Agassiz 1843 elasmobranch
NMMNH P-26435, 34157
 Hybodontiformes - Lonchidiidae
Lonchidiidae indet.2 Herman 1977 elasmobranch
NMMNH P-26430, 26440, 41474-76
Lonchidion humblei2 Murry 1981 elasmobranch
NMMNH P-26429, 41471-73
Gnathostomata
  -
Osteichthyes indet.2 bony fish
NMMNH P-26368, 26372-74
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
Actinopteri
 Palaeonisciformes - Palaeoniscidae
aff. Turseodus sp.2 Leidy 1857
NMMNH P-26366, 26369, 26376, 26470
 Palaeonisciformes - Redfieldiidae
Redfieldiidae indet.2 Hutchinson 1973
NMMNH P-26377, 34155
? Redfieldiidae indet.2 Hutchinson 1973
NMMNH P-26382
 Semionotiformes - Semionotidae
? Semionotidae indet.2 Woodward 1890
Osteichthyes
 Dipnoi - Arganodontidae
Arganodus aff. dorotheae2 Case 1921 lungfish
NMMNH P-26385
Coelacanthimorpha
 Coelacanthiformes - Coelacanthidae
cf. Quayia zideki5 Hunt 1997 coelacanth
NMMNH P-26385
Osteichthyes
 Temnospondyli -
Reptilia
  -
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
 Procolophonia - Procolophonidae
Procolophonidae indet.2 Lydekker 1889 parareptile
NMMNH P-34151, 26421
 Eosuchia -
Archosauromorpha indet.2 archosauromorph
NMMNH P-26437
Trilophosaurus jacobsi3 Murry 1987 archosauromorph
NMMNH P-34073, 34372
Trilophosaurus buettneri2 Case 1928 archosauromorph
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
 Pseudosuchia - Stagonolepididae
? Stagonolepididae indet.2 archosaur
NMMNH P-34414
 Pseudosuchia -
aff. Pekinosaurus olseni2 Hunt and Lucas 1994 archosaur
NMMNH P-34406
 Phytosauria - Parasuchidae
"Phytosauridae indet." = Mystriosuchinae2
"Phytosauridae indet." = Mystriosuchinae2 von Huene 1915 archosaur
 Eosuchia -
Tecovasaurus murryi n. gen. n. sp.4 Hunt and Lucas 1994 archosauromorph
NMMNH P-18192-93, 18196, 26415, 26417
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
Lepidosauria indet.2 Haeckel 1866 lepidosaur
NMMNH P-26420
? Lepidosauria indet.2 Haeckel 1866 lepidosaur
NMMNH P-26419, 34381
 Rhynchocephalia -
Sphenodontia indet.2 rhynchocephalian
two forms
"aff. Clevosaurus latidens" = Fraserosphenodon latidens2 Fraser 1993 rhynchocephalian
NMMNH P-26412
aff. Diphydontosaurus sp.2 Whiteside 1986 rhynchocephalian
NMMNH P-26423
Planocephalosaurus lucasi n. sp.2 Heckert 2004 rhynchocephalian
NMMNH P-26425, 41711
Osteichthyes
 Therapsida - Cynodontia
? Cynodontia indet.2 therapsid
NMMNH P-34384
Cynodontia indet.2 therapsid
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 Gill 1872 therapsid
NMMNH P-34385-86
  -
Colognathus obscurus2 Case 1928 amniote
NMMNH P-26418, 26442
unclassified
  -
Plantae indet.2 Haeckel 1866
NMMNH P-26452, 34161 (root casts, wood)