MGS 103 (Paleocene of the United States)

Also known as LGS 51

Where: Sabine County, Louisiana (31.5° N, 93.6° W: paleocoordinates 35.0° N, 76.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pendleton Ferry Formation (Wilcox Group), Thanetian (59.2 - 56.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; unlithified, ferruginous, glauconitic sandstone

• Impressions and molds found in glauconitic ferruginous sand (Barry & LeBlanc 1942)

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Primary reference: D. T. Dockery. 1980. Invertebrate Macropaleontolgy of the Clarke County Mississippi Area. Bulletin - Mississippi Geological, Economic and Topographic Survey 122 [M. Kosnik/M. Kosnik/L. Eccles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101129: authorized by Jocelyn Sessa, entered by Laurie Eccles on 17.12.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Scleractinia - Astrocoeniidae
Madracis gregorioi Vaughan 1900 stony coral
Bivalvia
 Ostreida - Ostreidae
"Ostrea thirsae" = Odontogryphaea thirsae
"Ostrea thirsae" = Odontogryphaea thirsae Gabb 1862 oyster
 Arcida - Arcidae
"Arca (Barbatia) cuculloides" = Barbatia (Cucullaearca) cuculloides
"Arca (Barbatia) cuculloides" = Barbatia (Cucullaearca) cuculloides Conrad 1833 clam
 Cardiida - Cardiidae
"Cardium (Cerastoderma) tuomeyi" = Acanthocardia (Schedocardia) tuomeyi
"Cardium (Cerastoderma) tuomeyi" = Acanthocardia (Schedocardia) tuomeyi Aldrich 1886 cockle
Cardium (Cerastoderma) tuomeyi var.
 Carditida - Carditidae
Venericardia (Venericor) densata Conrad 1845 clam
Venericardia (Venericor) densata pendletonensis
 Nuculanida - Nuculanidae
Nuculana corpulentoidea pointed nut clam
Gastropoda
 Heterostropha - Architectonicidae
 Cerithioidea - Turritellidae
"Turritella mortoni" = Kapalmerella mortoni Conrad 1830 turret shell
Territella mortoni postmortoni
Turritella bellifera turret shell
 Sorbeoconcha - Naticidae
 Neogastropoda - Buccinidae
Pseudoliva vetusta Conrad 1833 true whelk