PU 626 (Telm VI) - Seymour Island (Eocene of Antarctica)

Also known as PU 1071, PU 1072, PU 630, PU 2, PU 1063

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 1071, 1072, 630, 2, and 1063.

• 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, 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 72397: 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.
Gastropoda
 Cerithioidea - Turritellidae
Colposigma euthenia n. sp. Stilwell and Zinsmeister 1992 turret shell
Colposigma capitanea n. sp. Stilwell and Zinsmeister 1992 turret shell
 Neotaenioglossa - Calyptraeidae
Zegalerus coniculus n. sp. slipper shell
 Sorbeoconcha - Ficidae
"Ficus (Diconoficus) meridonalis n. sp." = Ficus
"Ficus (Diconoficus) meridonalis n. sp." = Ficus fig shell
 Sorbeoconcha - Ranellidae
Argobuccinum wimani n. gen. n. sp. triton shell
 Sorbeoconcha - Aporrhaidae
"Arrhoges (Antarctohoges) diversicostata" = Antarctohoges
"Arrhoges (Antarctohoges) diversicostata" = Antarctohoges snail
 Sorbeoconcha - Struthiolariidae
Perissodonta laevis Wilckens 1911 snail
Struthiolarella variabilis Wilckens 1911 snail
 Neogastropoda - Volutidae
Pachymelon (Palomelon) suropsilos Stilwell and Zinsmeister 1992 volute
 Neogastropoda - Nassariidae
Sudonassarius antarctohimaleos n. gen. n. sp. Stilwell and Zinsmeister 1992 snail
 Neogastropoda - Buccinidae
Austrobuccinum tuberosum n. gen. n. sp. Stilwell and Zinsmeister 1992 true whelk
"Cominella" crozieri n. sp. true whelk
 Neogastropoda - Fasciolariidae
 Neogastropoda - Borsoniidae
Zemacies finlayi n. sp. snail
 Sorbeoconcha - Naticidae
Polinices (Polinices) cf. subtenuis Ihering 1907 moon snail
 Trochoidea - Trochidae
"Antisolarium" abstrusum n. sp. top snail
 Opisthobranchia - Bullidae
 Opisthobranchia - Cylichnidae
Bivalvia
 Nuculanida - Yoldiidae
Yoldiella leurovata n. sp. Stilwell and Zinsmeister 1992 clam
 Mytilida - Mytilidae
Arcuatula sootryeni n. sp. Stilwell and Zinsmeister 1992 mussel
 Ostreida - Ostreidae
Ostrea seymourensis Zinsmeister 1984 oyster
 Pectinida - Pectinoidae
"Chlamys" "sp. B" Röding 1798 scallop
 Arcida - Cucullaeidae
 Lucinida - Lucinidae
Saxolucina sharmani Wilckens 1911 clam
 Thraciida - Periplomatidae
 Pholadida - Myidae
Mya (Arenomya) nucleoides Wilckens 1911 softshell clam
Mya (Geramya) ekelofi n. subgen. n. sp. Stilwell and Zinsmeister 1992 softshell clam
 Cardiida - Mactridae
 Cardiida - Veneridae
Eurhomalea florentinoi Zinsmeister 1984 venus clam
Eurhomalea antarctica Sharman and Newton 1897 venus clam
Eurhomalea newtoni Wilckens 1911 venus clam
"Cyclorismina" marwicki Zinsmeister 1984 venus clam
 Hiatellida - Hiatellidae
Hiatella tenuis Wilckens 1911 clam
 Carditida - Carditidae
Cyclocardia mesembria n. sp. Stilwell and Zinsmeister 1992 clam