southwest of Grandfield (Permian of the United States)

Where: Tillman County, Oklahoma (34.2° N, 98.8° W: paleocoordinates 2.5° N, 28.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Hennessey Formation, Kungurian (279.3 - 272.3 Ma)

• "lower third" of a 9 foot bed

•"when the known lower boundary of the Arroyo [Formation] is extrapolated northward... it passes through the South Grandfield site."

•the Arroyo is within the Clear Fork Group, all of which is Kungurian (see discussion of Romer 1928 collections)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; green, red shale and poorly lithified, red sandstone

• "Red shale spotted with pale green, containing lenses of fissile red sandstone and of stratified dark red fine conglomerate."

Size class: macrofossils

Preservation: concretion

Collected by O. Gilpin in 1966; reposited in the FMNH

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

• "Bone and bone-containing nodules may be collected from the surface... An effort to excavate for fossils was not productive... about forty pounds of red shale... was washed [and] five scraps of bone were recovered, none identifiable."

•UCLA VP = Vertebrate paleontology collections of the University of California, Los Angeles

Primary reference: E. Daly. 1969. A new procolophonoid reptile from the Lower Permian of Oklahoma. Journal of Paleontology 43(3):676-687 [J. Mueller/T. Liebrecht/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 67945: authorized by John Alroy, entered by John Alroy on 18.12.2006, edited by Torsten Liebrecht and Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

• not the same as the two West Grandfield sites of Olson 1967
Chondrichthyes
 Xenacanthiformes - Xenacanthidae
Xenacanthus sp.2 Beyrich 1848 elasmobranch
FMNH UF 1058 ("a number of teeth and a few pieces of cephalic spine")
Osteichthyes
 Palaeonisciformes -
Palaeoniscoidei indet.2
FMNH UF 1065-1067; "small"
 Palaeonisciformes - Dicellopygidae
? Brachydegma caelatum2 Dunkle 1939
FMNH UF 1072
 Palaeonisciformes - Rhabdolepidae
Grandfieldia callilepidota n. gen. n. sp.2 Daly 1973
FMNH UF 1056 (paratype), 1059 (holotype), 1060 to 1064 (all are paratypes)
Amphibia
 Temnospondyli - Micropholidae
Tersomius cf. texensis2 Case 1910 tetrapod
FMNH UR 1324, 1329, 2273 to 2292, 2338 to 2381, 2410, 2411
 Temnospondyli - Trimerorhachidae
Trimerorhachis sp.2 Cope 1878 tetrapod
FMNH UR 2271, 2272, 2283 to 2285
 Microsauria - Hapsidopareiidae
Hapsidopareion lepton n. gen. n. sp.2
Hapsidopareion lepton n. gen. n. sp.2 Daly 1973 tetrapod
FMNH UR 2303 (holotype), 2304 to 2310, 2413 (all are paratypes)
 Nectridea - Diplocaulidae
"Peronedon primus" = Diplocaulus primus3 Olson 1970 tetrapod
FMNH UR 2293 (originally identified as Diplocaulus cf. magnicornis by Daly, 1973); UCLA VP 3245, 3323
Diplocaulus cf. magnicornis2 Cope 1882 tetrapod
FMNH UR 2294
Osteichthyes
 Synapsida - Sphenacodontidae
Dimetrodon loomisi2 Romer 1937 synapsid
FMNH UR 2332 to 2334
 Synapsida - Edaphosauridae
Edaphosaurus sp.2 Cope 1882 synapsid
FMNH UR 2335
Reptilia
 Procolophonomorpha - Acleistorhinidae
Acleistorhinus pteroticus n. gen. n. sp.2
Acleistorhinus pteroticus n. gen. n. sp.2 Daly 1969 parareptile
FMNH UR 1038 (type)
 Eureptilia - Captorhinidae
Labidosaurus sp.2 Cope 1896 eureptile
FMNH UR 2392
Captorhinus aguti2 Cope 1882 eureptile
FMNH UR 2316 to 2331, 2388 to 2391
Osteichthyes
 Recumbirostra - Ostodolepidae
Micraroter erythrogeios n. gen. n. sp.2
Micraroter erythrogeios n. gen. n. sp.2 Daly 1973 amniote
FMNH UR 2311 (holotype), 2312 to 2314 (all are paratypes)
 Recumbirostra - Molgophidae
"Lysorophus cf. tricarinatus" = Brachydectes newberryi2
"Lysorophus cf. tricarinatus" = Brachydectes newberryi2 Cope 1868 amniote
FMNH UR 2295 (two series of vertebrae in a single nodule)
 Recumbirostra - Gymnarthridae
Euryodus dalyae n. sp.1 Carroll and Gaskill 1978 amniote
FM-UR 2296 (Holotype, skull with lower jaws)
Cardiocephalus sp.2 Broili 1904 amniote
FMNH 2299 to 2302 (vertebrae, "occurring singly and in short series")
Cardiocephalus cf. sternbergi2 Broili 1904 amniote
FMNH UR 2296 to 2298, 2387
 Dipnoi - Gnathorhizidae
Gnathorhiza serrata2 Cope 1883 lungfish
FMNH UF 1057, 1069, 1070 (tooth plates and and fragments)
 Osteolepiformes - Megalichthyidae
Ectosteorhachis cf. nitidus2 Cope 1880 lobe-finned fish
FMNH UF 1068