Lanier Pit (USNM collection) (Eocene of the United States)

Where: Pender County, North Carolina (34.6° N, 77.7° W: paleocoordinates 34.5° N, 68.5° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Castle Hayne Formation, Bartonian (41.3 - 38.0 Ma)

Environment/lithology: marine; shelly/skeletal wackestone

• a bryozoan micrudite 9m thick according to baum (1979, pers. comm.)

Size classes: macrofossils, mesofossils

Reposited in the USNM

Primary reference: P. M. Kier. 1980. The Echinoids of the Middle Eocene Warley Hill Formation, Santee Limestone, and Castle Hayne Limestone of North and South Carolina. Smithsonian Contributions to Paleobiology 39:1-102 [A. Miller/K. Layou]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5383: authorized by Arnold Miller, entered by Karen Layou on 29.09.1999, edited by Uta Merkel and Marko Manojlovic

Creative Commons license: CC BY (attribution)

Taxonomic list

Hexactinellida
 Hexactinosa - Aphrocallistidae
Druidia wilsoni2 Finks et al. 2011 glass sponge
Echinoidea
 Clypeasteroida - Fibulariidae
Echinocyamus parvus Emmonds 1858 sand dollar
Echinocyamus bisexus Kier 1968 sand dollar
 Clypeasteroida - Protoscutellidae
Periarchus lyelli Conrad 1834 sand dollar
 Echinolampadoida - Echinolampadidae
Echinolampas appendiculata Emmons 1858 sea urchin
 Spatangoida - Schizasteridae
Linthia wilmingtonensis Clark and Twitchell 1915 heart urchin
Linthia hanoverensis Kellum 1926 heart urchin
Agassizia wilmingtonica Cooke 1942 heart urchin
Agassizia wilmingtonica wilmingtonica
 Spatangoida - Prenasteridae
Unifascia carolinensis Clark and Twitchell 1915 heart urchin
 Spatangoida - Spatangidae
Maretia subostrata heart urchin
 Calycina - Phymosomatidae
"Dixieus cf. dixie" = Phymosoma dixie
"Dixieus cf. dixie" = Phymosoma dixie Cooke 1941 sea urchin
Dixieus cf. D. dixie
 Cidaroida - Cidaridae
Cidaris pratti Clark and Twitchell 1915 pencil urchin
Rhynchonellata
 Terebratulida - Cancellothyrididae
 Terebratulida - Megathyrididae
Argyrotheca quadrata n. sp.1 Cooper 1988
Also includes Argyrotheca quadrata transversa