PU 456 (Telm V) - Seymour Island (Eocene to of Antarctica)

Also known as PU 457, 446, 487, 10, 469, 450

Where: Antarctica (64.3° S, 56.8° W: paleocoordinates 63.5° S, 63.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Telm 5 Member (La Meseta Formation), Ypresian to Ypresian (56.0 - 41.3 Ma)

• STRATIGRAPHIC RELATIONS: From Telm 5 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: Middle Eocene. At the base of the Struthiolarella steinmanni zone. STRATIGRAPHIC POSITION: In upper part of section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, medium-grained, concretionary, gray sandstone

• ENVIRONMENT: Barrier island to nearshore tidal and wave-dominated environment. TEMPERATURE: Warm-temperate fauna.
• SPECIFIC LITHOLOGY: Matrix of clean grey, medium-grained, moderately well-sorted, moderately well indurated quartz sandstone. LITHIFICATION: Lithified, based on facies description, "moderately well indruated".

Size class: macrofossils

Preservation: concretion

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 72405: 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
 Neotaenioglossa - Calyptraeidae
Zegalerus coniculus n. sp. slipper shell
 Cerithioidea - Turritellidae
Colposigma euthenia n. sp. Stilwell and Zinsmeister 1992 turret shell
 Neogastropoda - Volutidae
Eoscaphella fordycei n. gen. n. sp.
Eoscaphella fordycei n. gen. n. sp. Stilwell and Zinsmeister 1992 volute
 Neogastropoda - Tudiclidae
Tudiclana doylei n. sp. snail
 Neogastropoda - Buccinidae
Penion australocapax n. sp. true whelk
Austrobuccinum tuberosum n. gen. n. sp. Stilwell and Zinsmeister 1992 true whelk
Zelandiella verrucosa n. sp. true whelk
Eobuccinella brucei n. sp. Stilwell and Zinsmeister 1992 true whelk
 Neogastropoda - Nassariidae
Sudonassarius antarctohimaleos n. gen. n. sp. Stilwell and Zinsmeister 1992 snail
 Neogastropoda - Fasciolariidae
Taioma bicarinata n. sp. snail
 Neogastropoda - Costellariidae
Austrosullivania lata n. gen. n. sp.
Austrosullivania lata n. gen. n. sp. ribbed mitre
 Neogastropoda - Raphitomidae
Austrotoma oliveroi n. sp. snail
 Sorbeoconcha - Ficidae
Austroficopsis seymourensis n. gen. n. sp., Austroficopsis wimani n. gen. n. sp.
Austroficopsis seymourensis n. gen. n. sp. Stilwell and Zinsmeister 1992 fig shell
Austroficopsis wimani n. gen. n. sp. Stilwell and Zinsmeister 1992 fig shell
 Sorbeoconcha - Naticidae
Polinices (Polinices) cf. subtenuis Ihering 1907 moon snail
 Heterostropha - Pyramidellidae
Agatha scotti n. sp., "Turbonilla ("Ptycheulimella") aersispira n. sp." = Ptycheulimella
Agatha scotti n. sp. snail
"Turbonilla ("Ptycheulimella") aersispira n. sp." = Ptycheulimella snail
 Heterostropha - Acteonidae
Bivalvia
 Nuculida - Nuculidae
Nucula (Leionucula) nova Wickens 1911 nut clam
 Nuculanida - Nuculanidae
Australoportlandia antarctica Zinsmeister 1984 pointed nut clam
 Nuculanida - Yoldiidae
Yoldia leurovata n. sp. clam
 Carditida - Carditidae
Cyclocardia mesembria n. sp. Stilwell and Zinsmeister 1992 clam
 Lucinida - Lucinidae
Saxolucina sharmani Wilckens 1911 clam
 Hiatellida - Hiatellidae
Panopea eightsi n. sp. Stilwell and Zinsmeister 1992 clam
 Pholadida - Myidae
Mya (Geramya) ekeloti n. subgen. n. sp.
Mya (Geramya) ekeloti n. subgen. n. sp. softshell clam
 Cardiida - Montacutidae
Mysella trigonoelliptica n. sp. Stilwell and Zinsmeister 1992 clam
 Cardiida - Veneridae
Eumarcia (Atamarcia) robusta n. sp. Stilwell and Zinsmeister 1992 venus clam
Eumarcia (Eumarcia) austrolissa n. sp. Stilwell and Zinsmeister 1992 venus clam
"Cyclorismina" marwicki Zinsmeister 1984 venus clam
Eurhomalea carlosi venus clam
Eurhomalea newtoni Wilckens 1911 venus clam
Eurhomalea antarctica Sharman and Newton 1897 venus clam
 Cardiida - Mactridae
Mactra irizari Wilckens 1912 clam
Standella mystrosura n. sp. Stilwell and Zinsmeister 1992 clam
 Cardiida - Lahillidae
Lahillia wilckensi Zinsmeister 1984 clam
 Mytilida - Mytilidae
 Arcida - Cucullaeidae
 Ostreida - Ostreidae
Ostrea antarctica Zinsmeister 1984 oyster