PBDB Collection

Trinity River (H76-73-8) (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 1453: 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

Scaphopoda
Gadilida - Gadilidae	Cadulus sp. Cadulus sp. Philippi 1844 tusk shell
Bivalvia
Ostreida - Pinnidae	Atrina sp. Atrina sp. Gray 1842 oyster
Ostreida - Ostreidae	Cubitostrea sp. Cubitostrea sp. Sacco 1897 oyster
Pholadida - Corbulidae	Caryocorbula deusseni Caryocorbula deusseni clam
Cardiida - Semelidae	Abra cf. nitens Abra cf. nitens Lea 1833 abra originally entered as "Abra cf. nitens"
Nuculida - Nuculidae	"Nucula mauricensis" = Nucula (Nucula) mauricensis "Nucula mauricensis" = Nucula (Nucula) mauricensis Harris 1919 nut clam
Gastropoda
-	Gastropoda indet. Gastropoda indet. Cuvier 1795 snail misc. gastropods, 8 species, 1 specimen each.
Heterostropha - Architectonicidae	Architectonica meekana, Architectonica amoena Architectonica meekana sundial splendida Architectonica amoena sundial
Sorbeoconcha - Naticidae	Naticidae indet., Polinices aratus Naticidae indet. Guilding 1834 moon snail "Naticid sp." Polinices aratus moon snail
Neogastropoda - Volutidae	Athleta petrosa Athleta petrosa Conrad 1833 volute
Neogastropoda - Turridae	Turridae indet., Michela trabeatoides, "Protosurcula gabbi" = Protosurcula gabbii, Awateria retifera, Eucheilodon reticulata Turridae indet. Swainson 1840 turrid "Turrid sp. A (6 spec.), Turrid sp. (7 spec.)" Michela trabeatoides Harris 1895 turrid "Protosurcula gabbi" = Protosurcula gabbii Conrad 1865 turrid Awateria retifera Gabb 1860 turrid Eucheilodon reticulata turrid
Neogastropoda - Terebridae	Terebra texagyra Terebra texagyra auger snail
Neogastropoda - Buccinidae	Pseudoliva vetusta, Terebrifusus multiplicatus, Buccitriton texanum Pseudoliva vetusta Conrad 1833 true whelk carinata Terebrifusus multiplicatus true whelk Buccitriton texanum true whelk
Neogastropoda - Melongenidae	Levifusus mortoniopsis Levifusus mortoniopsis snail
Neogastropoda - Fasciolariidae	Latirus moorei Latirus moorei Gabb 1860 snail
Neogastropoda - Cancellariidae	Bonellitia parilis Bonellitia parilis snail
Neogastropoda - Costellariidae	Conomitra texana Conomitra texana ribbed mitre
Sorbeoconcha - Ranellidae	"Distorsio septemdentata" = Distorsio septendentata "Distorsio septemdentata" = Distorsio septendentata triton shell
Cerithioidea - Turritellidae	Turritella nasuta, Mesalia claibornensis Turritella nasuta turret shell Mesalia claibornensis turret shell
Opisthobranchia - Retusidae	Retusa galba Retusa galba snail
Anthozoa
-	Anthozoa indet., Anthozoa indet. Anthozoa indet. Ehrenberg 1834 "Coral sp. B" Anthozoa indet. Ehrenberg 1834 "Coral sp. A"