PU 623 (Telm VI) - Seymour Island (Eocene of Antarctica)

Also known as PU 575

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 6 Member (La Meseta Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• STRATIGRAPHIC RELATIONS: From Telm 6 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. Within the Perissodonta laevis. STRATIGRAPHIC POSITION: In upper part of section; equivalent to PU 575.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, shelly/skeletal, sandy siltstone

• ENVIRONMENT: Barrier island to nearshore tidal and wave-dominated environment. TEMPERATURE: Warm-temperate fauna.
• SPECIFIC LITHOLOGY: Shell lens in sandy siltstone. LITHIFICATION: Lithified, based on facies desicriptions of adajcent strata.

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 72395: authorized by Austin Hendy, entered by Austin Hendy on 02.06.2007

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
 Arcida - Cucullaeidae
 Pectinida - Pectinoidae
"Chlamys" "sp. B" Röding 1798 scallop
 Pholadida - Myidae
Mya (Arenomya) nucleoides Wilckens 1911 softshell clam
 Cardiida - Veneridae
"Cyclorismina" marwicki Zinsmeister 1984 venus clam
 Hiatellida - Hiatellidae
Panopea eightsi n. sp. Stilwell and Zinsmeister 1992 clam
Gastropoda
 Sorbeoconcha - Aporrhaidae
"Arrhoges (Antarctohoges) diversicostata" = Antarctohoges
"Arrhoges (Antarctohoges) diversicostata" = Antarctohoges snail
 Neogastropoda - Borsoniidae
Zemacies canalomos n. sp. snail