PBDB Collection

Greenwood Canyon (Cretaceous to of the United States)

Also known as SMU Loc. 21, Triconodont Gully, Turtle Gully

Where: Montague County, Texas (33.5° N, 97.6° W)

• Paleocoordinates: 37.4° N, 41.2° W (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; siliciclastic sediments

Size class: mesofossils

Collected by Slaughter, Langston, et al. in 1949-1973; reposited in the FMNH, TMM

Collection methods: bulk, quarrying, sieve,

Primary reference: B. Patterson. 1955. A symmetrodont from the Early Cretaceous of northern Texas. Fieldiana: Zoology 37:689-693 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14388: authorized by John Alroy, entered by John Alroy on 19.05.2000, edited by Matthew Carrano, Richard Butler, Roger Benson and Philip Mannion

Creative Commons license: CC0 (CC0)

Taxonomic list

• see Patterson 1951 for location details

Show authors, comments, and common names

Mammalia
Eutriconodonta - Triconodontidae	Astroconodon denisoni n. gen. n. sp.⁴ Astroconodon denisoni n. gen. n. sp.⁴ Patterson 1951 mammal includes type of Patterson 1951; FMNH PM 542
Theriamorpha - Spalacotheriidae	Spalacotheroides bridwelli n. gen. n. sp. Spalacotheroides bridwelli n. gen. n. sp. Patterson 1955 mammal The holotype and 3 specimens referred by Patterson (1956): FMNH PM 1235 (right molar),PM 1133 (left molar), PM1236 (right ?M6)
Multituberculata -	Paracimexomys sp.⁴ Paracimexomys sp.⁴ Archibald 1982 multituberculate see Krause et al. 1990
Tribosphenida -	Tribosphenida indet.² Tribosphenida indet.² mammal FMNH PM 1075 (L ultimate upper molar) and 948 (Rmx)
Tribosphenida - Kermackiidae	Kermackia texana² Kermackia texana² Slaughter 1971 mammal teeth
Tribosphenida - Holoclemensiidae	Holoclemensia texana² Holoclemensia texana² Slaughter 1968 eutherian teeth
Tribosphenida -	Adinodon pattersoni n. sp.⁴ Adinodon pattersoni n. sp.⁴ Hershkovitz 1995 marsupial of Hershkovitz 1995 placed at "Triconodont Gulley, 2 1/2 miles SW Greenwood Canyon, Forestburg, Montague County"
Deltatheroida - Deltatheridiidae	Oklatheridium sp.², Oklatheridium minax², Oklatheridium szalayi² Oklatheridium sp.² Davis et al. 2008 metatherian Oklatheridium minax² Davis and Cifelli 2011 metatherian teeth Oklatheridium szalayi² Davis et al. 2008 metatherian teeth
Tribosphenida - Pappotheriidae	"Pappotherium pattersoni" = Pappotherium pattersoni⁴, "Slaughteria eruptens" = Pappotherium pattersoni² "Pappotherium pattersoni" = Pappotherium pattersoni⁴ Slaughter 1965 metatherian described by Butler 1978 "Slaughteria eruptens" = Pappotherium pattersoni² Slaughter 1965 metatherian teeth
Reptilia
Loricata - Paralligatoridae	Wannchampsus sp.¹ Wannchampsus sp.¹ Adams 2014 crocodilian "Glen Rose form"
Pterosauria -	? Pterosauria indet.⁹ ? Pterosauria indet.⁹ pterosaur "hollow bone fragments"
Saurischia -	Astrodon sp.⁶ Astrodon sp.⁶ Johnston 1859 sauropod
Theropoda -	Theropoda indet.⁸ Theropoda indet.⁸ theropod
Theropoda - Tyrannosauridae	"? Deinodontidae indet." = Tyrannosauridae⁷ "? Deinodontidae indet." = Tyrannosauridae⁷ Osborn 1906 tyrannosaurid
Theropoda - Dromaeosauridae	? Dromaeosauridae indet.⁷ ? Dromaeosauridae indet.⁷ Colbert and Russell 1969 maniraptoran SMUSMP 62271, "deinonychid"
Ornithischia -	Tenontosaurus sp.⁶, ? Tenontosaurus sp.⁸ Tenontosaurus sp.⁶ Ostrom 1970 ornithopod FMNH PR 962, 964; teeth ? Tenontosaurus sp.⁸ Ostrom 1970 ornithopod "camptosaur"
Testudinata - Helochelydridae	Naomichelys sp.⁷, Naomichelys speciosa⁵ Naomichelys sp.⁷ Hay 1908 turtle SMUSMP 62260 Naomichelys speciosa⁵ Hay 1908 turtle FMNH PR 273
Squamata -	Lacertilia indet.⁸ Lacertilia indet.⁸ lizard
Amphibia
Temnospondyli - Albanerpetontidae	Albanerpeton arthridion³ Albanerpeton arthridion³ Fox and Naylor 1982 tetrapod
Salientia -	Anura indet.⁸ Anura indet.⁸ frog
Caudata - Prosirenidae	Prosiren elinorae⁸ Prosiren elinorae⁸ Goin and Auffenberg 1958 salamander
Actinopteri
Lepisosteiformes -	Lepidotes sp.⁸ Lepidotes sp.⁸ Agassiz 1832 gar
Chondrichthyes
Hybodontiformes - Hybodontidae	"Hybodus cf. butleri" = Meristodonoides butleri⁸ "Hybodus cf. butleri" = Meristodonoides butleri⁸ Thurmond 1971 elasmobranch
Hybodontiformes - Lonchidiidae	"Lissodus anitae" = Lonchidion anitae⁸ "Lissodus anitae" = Lonchidion anitae⁸ Thurmond 1971 elasmobranch

¹Adams 2014; ²Davis and Cifelli 2011; ³Gardner 1999; ⁴Jacobs and Winkler 1998; ⁵Joyce et al. 2014; ⁶Langston 1974; ⁷Thurmond 1974; ⁸Winkler et al. 1990; ⁹Zangerl and Denison 1950