McLeod Prison (OMNH V706), Tomato Hill (Cretaceous to of the United States)

Also known as Howard McLeod Correctional Center; HMCC

Where: Atoka County, Oklahoma (34.4° N, 96.1° W: paleocoordinates 31.9° N, 50.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: middle Member (Antlers Formation), Late/Upper Aptian to Late/Upper Aptian (122.5 - 109.0 Ma)

• said to be late Aptian to early Albian

•microvertebrates are from "1-1.5 m below the dinosaur-bearing horizon" (Nydam and Cifelli 2002b)

• group of beds-level stratigraphic resolution

Environment/lithology: "floodplain"; concretionary, gray, green, red claystone and poorly lithified, lenticular, brown, yellow sandstone

• "overbank deposit associated with a meandering fluvial system" (Nydam and Cifelli 2002b)
• "red and gray/green claystone with intermittent lenses of poorly consolidated sandstones and numerous carbonate concretions" (Nydam and Cifelli 2002b)

Size classes: macrofossils, mesofossils

Collection methods: bulk, quarrying, mechanical, sieve,

Primary reference: R. L. Cifelli. 1997. First notice on Mesozoic mammals from Oklahoma. Oklahoma Geology Notes 57(1):4-17 [J. Alroy/J. Alroy/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14392: authorized by John Alroy, entered by John Alroy on 21.09.1998, edited by Matthew Carrano, Roger Benson and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• see also Nydam et al. 1997
Chondrichthyes
 Hybodontiformes - Hybodontidae
? Hybodus sp.2 Agassiz 1837 elasmobranch
Hybodus butleri2 Thurmond 1971 elasmobranch
 Hybodontiformes - Lonchidiidae
"Lissodus anitae" = Lonchidion anitae2
"Lissodus anitae" = Lonchidion anitae2 Thurmond 1971 elasmobranch
Gnathostomata
  -
Actinopteri
 Pycnodontiformes -
 Pycnodontiformes - Nursallidae
? Palaeobalistum sp.2 Blainville 1818
 Amiiformes - Amiidae
? Amiidae indet.2 Huxley 1861 bowfin
 Lepisosteiformes - Lepisosteidae
? Lepisosteidae indet.2 Cuvier 1825 gar
 Semionotiformes - Semionotidae
? Semionotidae indet.2 Woodward 1890
Osteichthyes
 Temnospondyli - Albanerpetontidae
Albanerpeton arthridion2 Fox and Naylor 1982 tetrapod
 Salientia -
Anura indet.2 frog
two forms
 Caudata -
? Caudata indet.2 salamander
Reptilia
 Testudines -
Testudines indet.2 Batsch 1788 turtle
 Testudines - Pleurosternidae
Glyptops sp.1 Marsh 1890 turtle
 Testudinata - Helochelydridae
Naomichelys sp.2 Hay 1908 turtle
 Saurischia -
Astrodon sp.2 Johnston 1859 sauropod
 Theropoda -
Theropoda indet.2 theropod
six additional forms
 Avetheropoda - Carcharodontosauridae
Acrocanthosaurus sp.1 Stovall and Langston 1950 allosauroid
Aves
  -
? Aves indet.2 Linnaeus 1758 bird
Reptilia
 Avetheropoda - Dromaeosauridae
cf. Deinonychus sp.2 Ostrom 1969 coelurosaur
five additional forms
Deinonychus antirrhopus2 Ostrom 1969 coelurosaur
OMNH 50268
 Neornithischia -
Tenontosaurus sp.2 Ostrom 1970 bird foot dinosaur
OMNH 16563, 53781, 51091, 50269
 Loricata -
Mesoeucrocodylia indet.7 Whetstone and Whybrow 1983 crocodilian
 Loricata - Goniopholididae
"? Goniopholidae indet." = Goniopholididae2
"? Goniopholidae indet." = Goniopholididae2 Cope 1875 crocodilian
 Loricata - Pholidosauridae
 Loricata -
Bernissartia sp.2 Dollo 1883 crocodilian
 Squamata - Teiidae
Teiidae indet.2 Gray 1827 lizard
not the same as Ptilotodon; OMNH 61206
Ptilotodon wilsoni n. gen. n. sp.6 Nydam and Cifelli 2002 lizard
OMNH 60764
 Squamata -
? Anguimorpha indet.6 F├╝rbringer 1900 lizard
OMNH 60541
Lacertilia indet.6 lizard
OMNH 60802, 61132
? Scincomorpha indet.6 Camp 1923 lizard
several forms
 Squamata - Paramacellodidae
cf. Paramacellodidae indet.6 Estes 1983 lizard
OMNH 34206, 32585, 60595, 32613, 60766
Atokasaurus metarsiodon n. gen. n. sp.6 Nydam and Cifelli 2002 lizard
scincomorph lizard; OMNH 60535
Mammalia
 Eutriconodonta - Triconodontidae
Astroconodon cf. denisoni2 Patterson 1951 mammal
 Tribosphenida - Kermackiidae
Kermackia texana3 Slaughter 1971 mammal
teeth
 Tribosphenida - Holoclemensiidae
Holoclemensia texana3 Slaughter 1968 eutherian
teeth
 Deltatheroida - Deltatheridiidae
Oklatheridium sp.3 Davis et al. 2008 metatherian
teeth
Oklatheridium szalayi n. gen. n. sp.4 Davis et al. 2008 metatherian
OMNH 62410, a LM2 (holotype); OMNH 62411, LM1; OMNH 61180, LM2; OMNH 63727, RM3; OMNH 33945, Lm1; OMNH 61643, Rm2 or 3; OMNH 33940, Rm2 or 3; OMNH 63728, Rm2 or 3; OMNH 63730, Lm2 or 3
Oklatheridium minax n. sp.3 Davis and Cifelli 2011 metatherian
teeth, including the holotype LM2 (OMNH 33455)
Atokatheridium boreni n. gen. n. sp.5 Kielan-Jaworowska and Cifelli 2001 metatherian
12 teeth, including the holotype RM2 (OMNH 61623), M1 (OMNH 61151), M2 (OMNH 61623), M3 (OMNH 63725), 3xm1 (OMNH 63724m 63889, 63890), 5xmx (OMNH 34905, 61181, 61624, 63891, 63892)
 Theriiformes - Pappotheriidae
"Pappotherium pattersoni" = Pappotherium pattersoni3, "Slaughteria eruptens" = Pappotherium pattersoni3
"Pappotherium pattersoni" = Pappotherium pattersoni3 Slaughter 1965 metatherian
teeth
"Slaughteria eruptens" = Pappotherium pattersoni3 Slaughter 1965 metatherian
teeth
 Allotheria -
Multituberculata indet.2 Cope 1884 multituberculate
two forms
 Multituberculata -
? Paracimexomys crossi n. sp. Cifelli 1997 multituberculate