Montgomery Landing, Yazoo Fm. (Eocene of the United States)

Where: Grant County, Louisiana (31.7° N, 92.9° W: paleocoordinates 32.4° N, 85.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Tullos Member (Yazoo Formation), Priabonian (38.0 - 33.9 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore shelf; gray, green, silty claystone and limestone

• dark greenish-gray (5GY4/1) massive clays, with some silt, and is interrupted by three limestone units.

Size class: macrofossils

Preservation: original calcite, original phosphate

Collection methods: quarrying, surface (in situ),

Primary reference: W. C. Lancaster. 1986. The taphonomy of an archaeocete skeleton and its associated fauna. Proceedngs of the Gulf Coast Association of Geological Societies 119-131 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32925: authorized by Mark Uhen, entered by Mark Uhen on 20.07.2003, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Malacostraca
 Decapoda - Calappidae
Calappa sp. Weber 1795 box crab
Maxillopoda
 Scalpelliformes - Scalpellidae
Bivalvia
 Pectinida - Pectinoidae
Eburneopecten sp.2 Conrad 1865 scallop
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Pinnidae
Pinna sp. Linnaeus 1758 oyster
 Carditida - Carditidae
 Pholadida - Corbulidae
 Cardiida - Kelliellidae
Alveinus minutus Conrad 1865 clam
 Nuculida - Nuculidae
"Nucula spheniopsis" = Nucula (Nucula) sphenopsis
"Nucula spheniopsis" = Nucula (Nucula) sphenopsis Conrad 1865 nut clam
Gastropoda
 Neogastropoda - Buccinidae
Pseudoliva sp. Swainson 1840 true whelk
 Neogastropoda - Fasciolariidae
Tritonatractus sp. Cossmann 1901 snail
 Neogastropoda - Volutidae
Caricella sp. Conrad 1835 volute
Athleta sp. Conrad 1853 volute
 Naticoidea - Naticidae
 Sorbeoconcha - Turritellidae
Turritella creola turret shell
Scaphopoda
 Gadilida - Gadilidae
Gymnolaemata
 Cheilostomata - Calloporidae
 Cheilostomata - Electridae
Conopeum sp. Gray 1848
 Cheilostomata - Otionellidae
Chondrichthyes
 Rhinopristiformes - Pristidae
Pristis sp. Linck 1790 sawfish
 Myliobatiformes - Dasyatidae
Dasyatis sp. Rafinesque 1810 whiptail stingray
 Myliobatiformes - Myliobatidae
"Myliobatus sp." = Myliobatis
"Myliobatus sp." = Myliobatis Cuvier 1816 eagle ray
 Lamniformes - Odontaspididae
Odontaspis sp. Agassiz 1843 sand tiger shark
 Carchariniformes - Carcharhinidae
Galeocerdo clarkensis White 1956 tiger shark
"Negaprion gibbesi" = Carcharhinus gibbesi Woodward 1889 requiem shark
 Carchariniformes - Hemigaleidae
Hemipristis wyattdurhami White 1956 ground shark
 Orectolobiformes - Ginglymostomatidae
"Ginglymostoma serra" = Nebrius serra
"Ginglymostoma serra" = Nebrius serra Leidy 1877 nurse shark
Osteichthyes
  -
Actinopteri
 Anguilliformes - Congridae
"Conger" dissimilis Frizzell and Lamber 1962 conger eel
 Beloniformes - Belonidae
Belone sp. Oken 1816
 Acanthomorphata - Sphyraenidae
Sphyraena sp. Walbaum 1792 barracuda
 Scombriformes - Trichiuridae
Trichiurus sp. Linnaeus 1758
 Ophidiiformes - Ophidiidae
Preophidion meyeri Koken 1888
 Acanthuriformes - Sciaenidae
 Perciformes - Lactariidae
Lactarius sp. Cuvier and Valenciennes 1833 perch-like fish
 Perciformes - Serranidae
Allomorone sp. Frizzell and Dante 1965 perch-like fish
 Acanthomorphata - Sciaenidae
 Gadiformes - Bregmacerotidae
Bregmaceros troelli Frizzell and Dante 1965
Mammalia
 Cetacea - Basilosauridae
Zygorhiza kochii1 Carus 1847 whale
Basilosaurus cetoides Owen 1839 whale