PU 1103 (Telm VII) - Seymour Island (Eocene of Antarctica)

Also known as PU 1060

Where: Antarctica (64.3° S, 56.8° W: paleocoordinates 64.3° S, 58.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Telm 7 Member (La Meseta Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• STRATIGRAPHIC RELATIONS: From Telm 7 of the La Meseta Fm, which overlies the Cross Valley Fm and is unconformably overlain by Quaternary deposits. THICKNESS: Unknown, within 294 m thick section. AGE: Late Eocene (Bartonian-Priabonian). Upper parts of Telm 7 could be of Early Oligocene age as discussed by Stilwell and Zinsmeister 1992 (p. 20), though placed in the Late Eocene by those authors. STRATIGRAPHIC POSITION: Near top of section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

• ENVIRONMENT: Barrier island to nearshore tidal and wave-dominated environment. TEMPERATURE: Warm-temperate fauna.
• SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Lithified, assumed based on facies descriptions of surrounding horizons.

Size class: macrofossils

Reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: J. D. Stilwell and M. O. Woodburne, December, 1986. REPOSITORY: USNM.

Primary reference: J. D. Stilwell and W. J. Zinsmeister. 1992. Molluscan Systematics and Biostratigraphy. Antarctic Research Series, AGU 55 [L. Ivany/L. Ivany/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 72390: authorized by Austin Hendy, entered by Austin Hendy on 01.06.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for Bivalvia, Gastropoda, and Cephalopoda. NOMENCLATURE: Authoritative publication with modern nomenclature, use of endemic generic/subgeneric names, and consistent use of species-level assignments.
unclassified
  -
Bivalvia
 Hiatellida - Hiatellidae
Hiatella tenuis Wilckens 1911 clam
 Thraciida - Periplomatidae
 Cardiida - Lahillidae
Lahillia wilckensi Zinsmeister 1984 clam
 Cardiida - Veneridae
Eurhomalea sp. Cossmann 1920 venus clam
Gastropoda
 Opisthobranchia - Cylichnidae
 Opisthobranchia - Bullidae
 Sorbeoconcha - Struthiolariidae
Perissodonta laevis Wilckens 1911 snail
 Sorbeoconcha - Aporrhaidae
"Arrhoges (Antarctohoges) arcuacheilos n. sp." = Antarctohoges arcuacheilos
"Arrhoges (Antarctohoges) arcuacheilos n. sp." = Antarctohoges arcuacheilos Stilwell and Zinsmeister 1992 snail
[entered as Arrhoges (Antarctohoges) arcuacheilus]
 Neogastropoda - Borsoniidae
Zemacies finlayi n. sp. snail
 Neogastropoda - Nassariidae
Sudonassarius antarctohimaleos n. gen. n. sp. Stilwell and Zinsmeister 1992 snail
 Neogastropoda - Buccinidae
Aeneator lawsi n. sp. true whelk
Cyrtochetus (Cyrtochetus) bucciniformis Wilckens 1911 true whelk