PBDB Collection

La Meseta Fm Telm 6 (Eocene of Antarctica)

Where: Seymour Island, Antarctica (64.3° S, 56.8° W: paleocoordinates 64.1° S, 59.8° W)

• coordinate stated in text

• basin-level geographic resolution

When: Telm 6 Member (La Meseta Formation), Bartonian (41.3 - 38.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: estuary or bay; poorly lithified, shelly/skeletal, brown, gray, conglomeratic sandstone

• conglomeratic shell beds with intervals of loosely consolidated grey and brown sands containing shell hash

•shells mostly in medium to fine grained moderately well sorted and well indurated grey quartz sandstone that weathers red

Size class: macrofossils

Preservation: original aragonite, original calcite

Collection methods: bulk, surface (float), surface (in situ),

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: biostratigraphic analysis

PaleoDB collection 63552: authorized by Linda Ivany, entered by Linda Ivany on 16.08.2006, edited by Mark Uhen and Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

• Mollusks only

Show authors, comments, and common names

Aves
Sphenisciformes -	Delphinornis sp.² Delphinornis sp.² Wiman 1905 penguin
Lingulata
Lingulida - Lingulidae	Glottidia antarctica¹ Glottidia antarctica¹ Buckman 1910
Gastropoda
Heterostropha - Mathildidae	"Gegania (Tubena) antarctodema n. sp." = Gegania "Gegania (Tubena) antarctodema n. sp." = Gegania snail
Heterostropha - Architectonicidae	Wangaloa disca n. sp. Wangaloa disca n. sp. snail
Trochoidea - Trochidae	"Antisolarium" abstrusum n. sp. "Antisolarium" abstrusum n. sp. top snail
Opisthobranchia - Bullidae	Bulla glacialis Bulla glacialis snail
Opisthobranchia - Cylichnidae	Scaphander (Kaitoa) antarctidis Scaphander (Kaitoa) antarctidis snail
Neotaenioglossa - Calyptraeidae	Zegalerus coniculus n. sp. Zegalerus coniculus n. sp. slipper shell
Sorbeoconcha - Naticidae	Polinices (Polinices) cf. subtenuis Polinices (Polinices) cf. subtenuis Ihering 1907 moon snail
Neogastropoda - Fasciolariidae	Streptochetus (Streptolathyrus) polaris n. sp. Streptochetus (Streptolathyrus) polaris n. sp. snail
Neogastropoda - Nassariidae	Sudonassarius antarctohimaleos n. sp., Bullia (Buccinanops) antarctica Sudonassarius antarctohimaleos n. sp. Stilwell and Zinsmeister 1992 snail Bullia (Buccinanops) antarctica snail
Neogastropoda - Buccinidae	Austrobuccinum tuberosum n. sp., "Cominella" crozieri n. sp., Cyrtochetus (Cyrtochetus) bucciniformis Austrobuccinum tuberosum n. sp. Stilwell and Zinsmeister 1992 true whelk "Cominella" crozieri n. sp. true whelk Cyrtochetus (Cyrtochetus) bucciniformis Wilckens 1911 true whelk
Neogastropoda - Raphitomidae	Austrotoma oliveroi n. sp. Austrotoma oliveroi n. sp. snail
Neogastropoda - Borsoniidae	Zemacies canalomos n. sp., Zemacies finlayi n. sp. Zemacies canalomos n. sp. snail Zemacies finlayi n. sp. snail
Neogastropoda - Volutidae	Pachymelon (Palomelon) suropsilos n. sp. Pachymelon (Palomelon) suropsilos n. sp. Stilwell and Zinsmeister 1992 volute
Sorbeoconcha - Struthiolariidae	Struthiolarella variabilis, Perissodonta laevis Struthiolarella variabilis Wilckens 1911 snail Perissodonta laevis Wilckens 1911 snail
Sorbeoconcha - Aporrhaidae	"Arrhoges (Antarctohoges) diversicostata" = Antarctohoges "Arrhoges (Antarctohoges) diversicostata" = Antarctohoges snail
Sorbeoconcha - Ranellidae	"Turritriton" suroabditus n. sp. "Turritriton" suroabditus n. sp. triton shell
Sorbeoconcha - Ficidae	Austroficopsis wimani n. sp., "Ficus (Diconoficus) meridionalis n. sp." = Ficus Austroficopsis wimani n. sp. Stilwell and Zinsmeister 1992 fig shell "Ficus (Diconoficus) meridionalis n. sp." = Ficus fig shell
Sorbeoconcha - Vermetidae	Serpulorbis hormathos n. sp. Serpulorbis hormathos n. sp. worm shell
Bivalvia
Nuculanida - Yoldiidae	Yoldiella leurovata n. sp. Yoldiella leurovata n. sp. Stilwell and Zinsmeister 1992 clam
Mytilida - Mytilidae	Arcuatula sootryeni n. sp., Modiolus thomsoni, "Perna" sp. Arcuatula sootryeni n. sp. Stilwell and Zinsmeister 1992 mussel Modiolus thomsoni mussel "Perna" sp. Retzius 1788 mussel
Pectinida - Pectinoidae	"Chlamys" sp. "Chlamys" sp. Röding 1798 scallop
Ostreida - Ostreidae	Ostrea seymourensis Ostrea seymourensis Zinsmeister 1984 oyster
Arcida - Cucullaeidae	Cucullaea donaldi Cucullaea donaldi clam
Cardiida - Veneridae	"Cyclorismina" marwicki, Eurhomalea florentinoi, Eurhomalea newtoni "Cyclorismina" marwicki Zinsmeister 1984 venus clam Eurhomalea florentinoi Zinsmeister 1984 venus clam Eurhomalea newtoni Wilckens 1911 venus clam
Cardiida - Mactridae	Mactra irizari, Nymphactra jonasseni n. sp., Oxyperas (Pseudoxyperas) ortmanni Mactra irizari Wilckens 1912 clam Nymphactra jonasseni n. sp. Stilwell and Zinsmeister 1992 clam Oxyperas (Pseudoxyperas) ortmanni clam
Pholadida - Myidae	Mya (Arenomya) nucleoides, Mya (Geramya) ekelofi n. sp. Mya (Arenomya) nucleoides Wilckens 1911 softshell clam Mya (Geramya) ekelofi n. sp. Stilwell and Zinsmeister 1992 softshell clam
Hiatellida - Hiatellidae	Hiatella tenuis, Panopea philippii, Panopea eightsi n. sp. Hiatella tenuis Wilckens 1911 clam Panopea philippii clam Panopea eightsi n. sp. Stilwell and Zinsmeister 1992 clam
Lucinida - Lucinidae	Saxolucina sharmani Saxolucina sharmani Wilckens 1911 clam
Carditida - Carditidae	Cyclocardia mesembria n. sp. Cyclocardia mesembria n. sp. Stilwell and Zinsmeister 1992 clam

¹Emig and Bitner 2005; ²Myrcha et al. 2002