Henry's Fork Hill (Bridger C) (Eocene of the United States)

Also known as Cedar Mountain; Henry's Fork Table

Where: Sweetwater County, Wyoming (41.7° N, 109.0° W: paleocoordinates 45.6° N, 95.1° W)

• coordinate based on political unit

When: upper Member (Bridger Formation), Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: W. D. Matthew. 1909. The Carnivora and Insectivora of the Bridger Basin, middle Eocene. Memoirs of the American Museum of Natural History 9:289-567 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 16235: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Roger Benson and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

• not the same as North of Cedar Mountain (see)
Osteichthyes
 Caudata - Urodela
Siren dunni n. sp.3
Siren dunni n. sp.3 Goin and Auffenberg 1957 siren
1873 O. C. Marsh collection from "Cottonwood White Layer; Henry's Fork" (possibly Bridger B or D instead)
Reptilia
 Testudines - Carettochelyidae
Anosteira ornata6 Leidy 1871 turtle
AMNH 6132, partial carapace: third division of level C, collected in 1905
 Crocodylia - Crocodylidae
Crocodylus cf. affinis7 Marsh 1871 crocodile
C4
 Squamata -
Tinosaurus stenodon n. gen. n. sp.2
Tinosaurus stenodon n. gen. n. sp.2 Marsh 1872 lizard
Yale University Museum, cat. no. 615 (holotype), portion of right dentary with two complete teeth and basal portion of a third
Mammalia
 Primates - Notharctidae
Notharctus robustior4 Leidy 1872 primate
Bridger C4
 Primates - Omomyidae
Hemiacodon sp.8 Marsh 1872 primate
"Upper Bridger, C5, on Henry's Fork": implicitly identified with H. gracilis
 Condylarthra - Hyopsodontidae
Hyopsodus lepidus n. sp. Matthew 1909 condylarth
"Horizon C"; Henry's Fork area according to Gazin 1976
 Amblypoda - Uintatheriidae
Uintatherium anceps10 Marsh 1871 uintathere
Bridger C3, C4, C5
 Perissodactyla - Brontotheriidae
"Palaeosyops robustus n. sp." = Palaeosyops robustus5, "Palaeosyops robustus" = Palaeosyops robustus1, "Palaeosyops laticeps" = Palaeosyops robustus1, "Telmatherium manteoceras" = Telmatherium validus1
"Palaeosyops robustus n. sp." = Palaeosyops robustus5 Marsh 1872 brontothere
see also Osborn 1929
"Palaeosyops robustus" = Palaeosyops robustus1 Marsh 1872 brontothere
"Palaeosyops laticeps" = Palaeosyops robustus1 Marsh 1872 brontothere
"Telmatherium manteoceras" = Telmatherium validus1 Marsh 1872 brontothere
 Perissodactyla - Hyrachyidae
Hyrachyus eximius11 Leidy 1871 odd-toed ungulate
Bridger C4, and "H. princeps" from C5
 Ferae -
Uintacyon jugulans n. sp. Matthew 1909 placental
Bridger C4
 Hyaenodonta - Hyaenodontidae
Didelphodus altidens1 Marsh 1872 eutherian
 Artiodactyla - Homacodontidae
Homacodon vagans9 Marsh 1872 even-toed ungulate
C5
Microsus cuspidatus9 Leidy 1870 even-toed ungulate
Bridger C5
 Sarcobora - Apatemyidae
Apatemys bellulus n. sp. Marsh 1872 insectivoran
of Marsh from Bridger C; Henry's Fork area according to Gazin 1958a