Hamilton Point Sample 702.15 (Cretaceous to of Antarctica)

Where: Antarctica (64.3° S, 57.4° W: paleocoordinates 62.2° S, 68.2° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Hamilton Point Member (Santa Marta Formation), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• "middle to upper Campanian"

• bed-level stratigraphic resolution

Environment/lithology: coastal; bioturbated, silty mudstone

• "shallow marine"
• the "member consists of monotonous bioturbated silty mudstones, interbedded with arc-derived thin planar ash layers" and the fossils are from the mudstones (duh)

Size class: microfossils

Collected in 1994, 1995

Collection methods: bulk, chemical, peroxide, sieve

• British Antarctic Survey collection

•"bulk samples were collected from holes of ca. 0.5m depth" and "dried and treated with hydrogen peroxide" and "subdivided by sieving into different size classes... all ostracode specimens present in the residue larger than 0.125 mm were picked"

Primary reference: G. Fauth, J. Seeling, and A. Luther. 2003. Campanian (Upper Cretaceous) ostracods from southern James Ross Island, Antarctica. Journal of Paleontology 49(1):95-107 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93969: authorized by John Alroy, entered by John Alroy on 07.02.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• "both calcareous and agglutinaed benthic foraminifers" in most samples and "microgastropods" in some were presented but not identified
Show authors, comments, and common names
Ostracoda
 Platycopida - Cytherellidae
Cytherelloidea megaspirocostata, Cytherella "sp. 1", Cytherella "sp. 2"
Cytherella "sp. 1" Jones 1849 ostracod
Cytherella "sp. 2" Jones 1849 ostracod
 Podocopida -
Mandelstamia antarctica
 Podocopida - Bairdiidae
Bairdia sp.
Bairdia sp. M'Coy 1844 ostracod
 Podocopida -
Majungaella australis, Majungaella sp.
Majungaella sp. ostracod