Stinking Springs, SMU Loc. 252 (Triassic of the United States)

Where: Apache County, Arizona (34.7° N, 109.6° W: paleocoordinates 10.3° N, 48.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Blue Mesa Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• Blue Mesa Member, approximately 10-20 metres above the contact with the underlying Mesa Redondo Member

•Kent et al. 2019: Kent et al. 2019: Blue Mesa member lies between magneto zones PF5r to PF8n (approximately 221.75–216.97Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; gray, blue mudstone and paleosol/pedogenic, nodular, white sandstone

• "low energy aquatic environment"
• "bluish-gray mudstone, which is laterally extensive. The microvertebrate concentration is restricted to several square metres. The producing layer lies about 1 meter below the contact of the mudstone with an overlying white sandstone unit. Pedogenic carbonate concretions are absent within the unit but are present at the base of the ovrlying sandstone. No evidence of soil formation exists within the bluish-gray mudstone unit, but burrows are present above the productive layer"

Size classes: macrofossils, mesofossils

Collection methods: bulk, quarrying, surface (float), sieve,

• SMU: Southern Methodist University

Primary reference: M. J. Polcyn, D. A. Winkler, L. L. Jacobs and K. Newman. 2002. Fossil occurrences and structural disturbance in the Triassic Chinle Formation at North Stinking Springs Mountain near St. Johns, Arizona. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:43-49 [R. Butler/R. Butler]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 92850: authorized by Richard Butler, entered by Richard Butler on 02.12.2009, edited by Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Pholidopleuriformes - Pholidopleuridae
cf. Australosomus sp. Pivetau 1930 ray-finned fish
Reptilia
  -
Reptilia indet. Laurenti 1768 reptile
 Parareptilia - Procolophonidae
Procolophonidae indet. Lydekker 1889 parareptile
 Diapsida -
Trilophosaurus jacobsi Murry 1987 archosauromorph
 Archosauria -
Archosauria indet. Cope 1869 archosaur
Teeth that may be referable to theropod dinosaurs or poposaurs, skeletal elements and scutes
 Ornithischia -
Ornithischia indet. Seeley 1888 ornithischian
 Theropoda - Coelophysidae
? Coelophysidae indet. Paul 1988 coelophysoid
 Theropoda -
? Ceratosauria indet. Marsh 1884 ceratosaur
 Pseudosuchia -
Poposaurus gracilis1 Mehl 1915 archosaur
 Loricata - Rauisuchidae
Postosuchus kirkpatricki1 Chatterjee 1985 rauisuchid
 Loricata -
Hesperosuchus agilis1 Colbert 1952 crocodilian
 Pseudosuchia - Shuvosauridae
"Chatterjeea elegans" = Shuvosaurus inexpectatus1
"Chatterjeea elegans" = Shuvosaurus inexpectatus1 Chatterjee 1993 archosaur
 Pseudosuchia - Stagonolepididae
Acaenasuchus geoffreyi Long and Murry 1995 aetosaur
"Stagonolepis wellesi" = Calyptosuchus wellesi Long and Ballew 1985 aetosaur
 Pseudosuchia -
Revueltosaurus callenderi1 Hunt 1989 aetosaur
 Phytosauria - Parasuchidae
"Phytosauridae indet." = Mystriosuchinae
"Phytosauridae indet." = Mystriosuchinae von Huene 1915 archosaur
Femur and jaw fragment
  -
cf. Parrishia sp. Long and Murry 1995 archosaur
 Diapsida - Doswelliidae
Vancleavea campi2 Long and Murry 1995 archosauromorph
Dermal armour and skeletal remains
 Eosuchia -
? Lepidosauromorpha indet. Benton 1983 crown diapsid
 Eosuchia - Sphenodontidae
Sphenodontidae indet. Cope 1871 lepidosaur
Osteichthyes
 Therapsida -
? Cynodontia indet. cynodont
Tricuspid teeth belonging to cynodont or possibly a pterosaur
Amphibia
 Temnospondyli -
Temnospondyli indet. tetrapod
Three morphotypes
 Temnospondyli - Metoposauridae
Apachesaurus sp., "Buettneria sp." = Anaschisma
Apachesaurus sp. Hunt 1993 tetrapod
"Buettneria sp." = Anaschisma Branson 1905 tetrapod
Coelacanthimorpha
 Coelacanthiformes - Mawsoniidae
cf. Chinlea sp. Schaeffer 1967 coelacanth
Osteichthyes
 Dipnoi - Ceratodontidae
Ceratodontidae indet. Gill 1872 lungfish
Actinopteri
 Semionotiformes - Semionotidae
Semionotidae indet. Woodward 1890
 Perleidiformes - Colobodontidae
Colobodontidae indet. Stensiö 1916
Osteichthyes
 Palaeonisciformes - Redfieldiidae
Redfieldiidae indet. Hutchinson 1973
 Palaeonisciformes - Palaeoniscidae
cf. Turseodus sp. Leidy 1857
Chondrichthyes
 Xenacanthiformes - Xenacanthidae
"Xenacanthus moorei" = Triodus moorei
"Xenacanthus moorei" = Triodus moorei Woodward 1889 elasmobranch
originally entered as "Xenacanthas moorei"
 Hybodontiformes - Acrodontidae
Acrodus sp.1 Agassiz 1834 elasmobranch
 Hybodontiformes - Lonchidiidae
"Lissodus humblei" = Lonchidion humblei
"Lissodus humblei" = Lonchidion humblei Murry 1981 elasmobranch