Ferris Formation (UW V-93012) (Cretaceous of the United States)

Also known as Rat Thing Ridge

Where: Carbon County, Wyoming (41.8° N, 107.0° W: paleocoordinates 48.8° N, 82.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Ferris Formation, Lancian (70.6 - 66.0 Ma)

• said to be Lancian

• bed-level stratigraphic resolution

Environment/lithology: terrestrial

Reposited in the UW

Primary reference: J. A. Lillegraven and J. J. Eberle. 1999. Vertebrate faunal changes through Lancian and Puercan time in southern Wyoming. Journal of Paleontology 73(4):691-710 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 70343: authorized by John Alroy, entered by John Alroy on 21.03.2007, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Lonchidiidae
"Lissodus selachos" = Lonchidion selachos
"Lissodus selachos" = Lonchidion selachos Estes 1964 elasmobranch
UW 26590, 24472
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
UW 27252
 Orectolobiformes - Orectolobidae
Squatirhina americana Estes 1964 wobbegong
UW 26602
Actinopteri
 Teleostei -
 Amiiformes - Amiidae
"Cyclurus fragosa" = Cyclurus fragosus
"Cyclurus fragosa" = Cyclurus fragosus Jordan 1927 bowfin
UW 27330
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
UW 27348
Reptilia
 Testudines - Trionychidae
Trionychidae sp. Gray 1825 softshell turtle
UW 30587
 Testudines -
"Compsemys victus" = Compsemys victa
"Compsemys victus" = Compsemys victa Leidy 1856 turtle
UW 27280
 Testudines - Baenidae
cf. Baenidae sp. Cope 1882 turtle
UW 27376; also part of UW 30587 listed by Holroyd & Hutchison (2002)
cf. Baenidae sp. Cope 1882 turtle
UW 26591, 27276
 Testudines - Nanhsiungchelyidae
Basilemys sp. Hay 1902 turtle
UW 26587
 Testudines - Pantrionychidae
Helopanoplia distincta Hay 1908 turtle
UW 27232
 Avetheropoda - Dromaeosauridae
Richardoestesia sp. Currie et al. 1990 coelurosaur
UW 27409
Saurornitholestes sp. Sues 1978 coelurosaur
UW 26278
 Avetheropoda -
Paronychodon lacustris Cope 1876 coelurosaur
UW 29007
 Neornithischia - Ceratopsidae
Chasmosaurinae indet. Lambe 1915 ceratopsid
UW 27432
 Neornithischia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918 hadrosaurine
UW 27308, 29012
 Crocodylia -
Brachychampsa sp. Gilmore 1911 crocodilian
UW 27402
 Squamata -
Squamata indet. Oppel 1811 squamates
UW 27228
 Squamata - Chamopsiidae
Leptochamops denticulatus Gilmore 1928 lizard
UW 27245