Trinity River (H76-73-7) (Eocene of the United States)

Also known as H76-73

Where: Houston County, Texas (31.3° N, 95.7° W: paleocoordinates 33.2° N, 84.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Wheelock Marl Member (Cook Mountain Formation), Lutetian (47.8 - 41.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; unlithified, silty claystone

• "Clay with scattered sand partings and fossiliferous concretions. clay weathers brownish-orange."

Size class: macrofossils

Collection methods: bulk, mechanical, sieve,

Primary reference: T. A. Hansen. 1978. Ecological control of evolutionary rates in Paleocene - Eocene marine molluscs. Ph.D. Thesis, Yale University 1-310 [T. Hansen/M. Sommers/A. Clement]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 1452: authorized by Thor Hansen, entered by Mike Sommers on 20.04.1999, edited by Jocelyn Sessa

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Nuculanida - Nuculanidae
Nuculana sp., Calorhadia opulenta
Nuculana sp. Link 1807 pointed nut clam
Calorhadia opulenta pointed nut clam
 Nuculida - Nuculidae
"Nucula mauricensis" = Nucula (Nucula) mauricensis
"Nucula mauricensis" = Nucula (Nucula) mauricensis Harris 1919 nut clam
 Cardiida - Cardiidae
Cardiidae indet.
Cardiidae indet. Lamarck 1809 cockle
Cardiid
 Cardiida - Mactridae
Mactridae indet.
Mactridae indet. Lamarck 1809 clam
Mactrid
 Ostreida - Pinnidae
Atrina sp.
Atrina sp. Gray 1842 oyster
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
misc. gastropods, 4 species, 1 specimen each.
 Heterostropha - Architectonicidae
Architectonica cf. meekana
Architectonica cf. meekana sundial
splendida - originally entered as "Architectonica cf. meekana"
 Sorbeoconcha - Naticidae
Polinices aratus
Polinices aratus moon snail
 Neogastropoda - Cancellariidae
Trigonostoma ? panones, Bonellitia parilis
Trigonostoma ? panones snail
originally entered as "Trigonostoma ? panones"
 Neogastropoda - Volutidae
Athleta petrosa
Athleta petrosa Conrad 1833 volute
 Neogastropoda - Fasciolariidae
Latirus moorei
Latirus moorei Gabb 1860 snail
 Neogastropoda - Buccinidae
Pseudoliva vetusta, Buccitriton texanum
Pseudoliva vetusta Conrad 1833 true whelk
carinata
 Neogastropoda - Costellariidae
Conomitra texana
Conomitra texana ribbed mitre
 Neogastropoda - Borsoniidae
Microdrillia harrisi
 Neogastropoda - Turridae
Turridae indet., Turridae indet., Eucheilodon reticulata, Michela trabeatoides, "Protosurcula gabbi" = Protosurcula gabbii, Hesperiturris nodocarinatus
Turridae indet. Swainson 1840 turrid
Turrid sp. A
Turridae indet. Swainson 1840 turrid
2 "Turrid" entries, 3 and 4 specimens.
Michela trabeatoides Harris 1895 turrid
"Protosurcula gabbi" = Protosurcula gabbii Conrad 1865 turrid
Hesperiturris nodocarinatus Gabb 1860 turrid
 Neogastropoda - Terebridae
Terebra texagyra
Terebra texagyra auger snail
 Cerithioidea - Turritellidae
Turritella nasuta
Turritella nasuta turret shell
 Opisthobranchia - Retusidae
Rhizorus conradianus
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834
"Coral sp. B"