Station 337, Seymour Island (Cretaceous to of Antarctica)

Where: Antarctica (64.3° S, 56.8° W: paleocoordinates 62.3° S, 67.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lopez de Bertodano Formation (Seymour Island Group), Late/Upper Campanian to Late/Upper Campanian (83.5 - 61.6 Ma)

• Section B1 have 300 m

Environment/lithology: shoreface; muddy, sandy siltstone

• Depositional environments for most of the López de Bertodano Formation are shallow shelf, mainly nearshore marine (Askin 1988; Harwood 1988; Huber 1988; Macellari 1988).

•

•Although Mesozoic tectonic reconstructions of the Antarctic Peninsula- South America region are not universally accepted, it is generally agreed that the James Ross Island basin contains sedimentary and volcanic strata deposited in a back-arc terrain (e.g. Elliot 1988).

• Cretaceous-Paleogene sediments on Seymour Island have an Antarctic Peninsula provenance, and are poorly consolidated, well-exposed, relatively un- weathered and richly fossiliferous. They include upper Campanian to Paleocene sediments of the López de Bertodano and overlying Sobral Formations, which are mainly fine- grained (muddy to sandy silts).

Size class: microfossils

Preservation: original sporopollenin

Reposited in the USNM

Primary reference: R. A. Askin. 1989. Endemism and heterochrony in the Late Cretaceous (Campanian) to Paleocene palynofloras of Seymour Island, Antarctica: implications for origins, dispersal and palaeoclimates of southern floras. Geological Society of America Special Paper (147)107-119 [C. Jaramillo/C. Jaramillo]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 167434: authorized by Carlos Jaramillo, entered by Carlos Jaramillo on 17.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Angiospermae
 Malvales - Bombacaceae
Bombacacidites bombaxoides
 Sapindales - Sapindaceae
Cupanieidites orthoteichus
Cupanieidites orthoteichus soapberry
Cookson & Pike
 Proteales - Proteaceae
Beaupreaidites elegansiformis
Beaupreaidites elegansiformis Cookson 1950
Cookson
 Santalales -
Anacolosidites sectus
Polypodiopsida
 Salviniales - Polypodiidae
Azolla sp.
Azolla sp. Lamarck 1783