American Cyanimid Company (Miocene of the United States)

Also known as Amalgamated Phosphate Mine; Brewster Phosphate Mine

Where: Polk County, Florida (27.9° N, 81.8° W: paleocoordinates 28.2° N, 79.2° W)

• coordinate based on political unit

When: Bone Valley Member (Peace River Formation), Serravallian (13.8 - 11.6 Ma)

• Clarendonian; lower beds

Environment/lithology: marginal marine; pebbly, phosphatic, argillaceous, sandy sandstone

Size class: macrofossils

Primary reference: G. S. Morgan. 1986. The so-called giant Miocene dolphin Megalodelphis magnidens Kellogg (Mammalia: Cetacea) is actually a crocodile (Reptilia: Crocodilia). Journal of Paleontology 60(2):411-417 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18505: authorized by John Alroy, entered by John Alroy on 26.07.1994, edited by Nick Pyenson

Creative Commons license: CC BY (attribution)

Taxonomic list

• Morgan 1986 repeats most of Simpson's list and gives no indication that the fauna is mixed"Hipparion ingenuum" is omitted by Hulbert 1988c
Mammalia
 Perissodactyla - Rhinocerotidae
Teleoceras proterum Leidy 1885 rhinoceros
"proterus"
Aphelops malacorhinus1 Cope 1878 rhinoceros
 Perissodactyla - Equidae
Hipparionini indet.1 Quinn 1955 hipparionine horse
"Hippotherium emsliei" = Cormohipparion emsliei3 Hulbert 1988 hipparionine horse
Nannippus aztecus1 Mooser 1968 hipparionine horse
Neohipparion eurystyle2 Cope 1893 hipparionine horse
 Carnivora - Ursidae
Agriotherium schneideri n. sp. Sellards 1916 bear
 Carnivora - Mustelidae
Enhydritherium terraenovae5 Berta and Morgan 1985 badger
"Brewster Mine"
 Proboscidea - Gomphotheriidae
Rhynchotherium sp.1 Falconer 1868 gomphothere
 Proboscidea - Mammutidae
Mammut matthewi1 Osborn 1921 mastodon
 Ungulata - Tayassuidae
Tayassuidae indet.1 Palmer 1897 peccary
 Ungulata - Camelidae
Camelidae indet. Gray 1821 camel
 Odontoceti - Physeteridae
Kogiopsis floridana n. gen. n. sp.4
Kogiopsis floridana n. gen. n. sp.4 Kellogg 1929 sperm whale
 Ungulata - Cervidae
Cervidae indet. Gray 1821 deer