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

• 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

 Xenacanthiformes - Xenacanthidae
"Xenacanthus moorei" = Triodus moorei
"Xenacanthus moorei" = Triodus moorei Woodward 1889 elasmobranch
originally entered as "Xenacanthas moorei"
 Hybodontiformes - Acrodontidae
Acrodus sp.1 Agassiz 1838 elasmobranch
 Hybodontiformes - Lonchidiidae
"Lissodus humblei" = Lonchidion humblei
"Lissodus humblei" = Lonchidion humblei Murry 1981 elasmobranch
 Perleidiformes - Colobodontidae
Colobodontidae indet. Stensiƶ 1916
 Palaeonisciformes - Palaeoniscidae
cf. Turseodus sp. Leidy 1857
 Palaeonisciformes - Redfieldiidae
Redfieldiidae indet. Hutchinson 1973
 Pholidopleuriformes - Pholidopleuridae
cf. Australosomus sp. Pivetau 1930
 Semionotiformes - Semionotidae
Semionotidae indet. Woodward 1890
 Dipnoi - Ceratodontidae
Ceratodontidae indet. Gill 1872 lungfish
 Coelacanthiformes - Mawsoniidae
cf. Chinlea sp. Schaeffer 1967 coelacanth
 Temnospondyli -
Temnospondyli indet. tetrapod
Three morphotypes
 Temnospondyli - Metoposauridae
Apachesaurus sp., "Buettneria sp." = Koskinonodon
Apachesaurus sp. Hunt 1993 tetrapod
"Buettneria sp." = Koskinonodon Branson and Mehl 1929 tetrapod
Reptilia indet. Laurenti 1768 reptile
 Procolophonia - Procolophonidae
Procolophonidae indet. Lydekker 1889 parareptile
 Eosuchia -
Trilophosaurus jacobsi Murry 1987 archosauromorph
 Eosuchia - Doswelliidae
Vancleavea campi2 Long and Murry 1995 archosauromorph
Dermal armour and skeletal remains
 Archosauria -
Archosauria indet. Cope 1869 archosaur
Teeth that may be referable to theropod dinosaurs or poposaurs, skeletal elements and scutes
 Saurischia - Coelophysidae
? Coelophysidae indet. Paul 1988 neotheropod
 Saurischia -
 Ornithischia -
Ornithischia indet. Seeley 1888 ornithischian
 Pseudosuchia - Shuvosauridae
"Chatterjeea elegans" = Shuvosaurus inexpectatus1
"Chatterjeea elegans" = Shuvosaurus inexpectatus1 Chatterjee 1993 archosaur
 Pseudosuchia - Stagonolepididae
Acaenasuchus geoffreyi Long and Murry 1995 archosaur
"Stagonolepis wellesi" = Calyptosuchus wellesi Long and Ballew 1985 archosaur
 Pseudosuchia -
Revueltosaurus callenderi1 Hunt 1989 archosaur
 Loricata -
Hesperosuchus agilis1 Colbert 1952 crocodilian
 Loricata - Rauisuchidae
Postosuchus kirkpatricki1 Chatterjee 1985 rauisuchid
 Pseudosuchia -
Poposaurus gracilis1 Mehl 1915 archosaur
 Phytosauria - Parasuchidae
"Phytosauridae indet." = Mystriosuchinae
"Phytosauridae indet." = Mystriosuchinae von Huene 1915 archosaur
Femur and jaw fragment
cf. Parrishia sp. Long and Murry 1995 archosaur
 Eosuchia -
? Lepidosauromorpha indet. Benton 1983 crown diapsid
 Rhynchocephalia - Sphenodontidae
Sphenodontidae indet. Cope 1869 rhynchocephalian
 Therapsida -
? Cynodontia indet. therapsid
Tricuspid teeth belonging to cynodont or possibly a pterosaur