Hamilton Point Sample 704.14: Middle Campanian - Late/Upper Campanian, Antarctica
collected 1994, 1995

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ostracoda
Ostracoda informal indet. sp. A Latreille 1802
Ostracoda - Platycopida - Cytherellidae
Cytherelloidea megaspirocostata
Ostracoda - Podocopida - Cytheruridae
Eocytheropteron carinoalatum
original and current combination Cytheropteron (Eocytheropteron)
Cytheropteron sp. Sars 1866
Ostracoda - Podocopida
Rostrocytheridea hamiltonensis
Ostracoda - Podocopida - Candonidae
Paracypris sp. Sars 1866
Ostracoda - Podocopida
Majungaella sp.
Mandelstamia antarctica
see common names

Geography
Country:Antarctica
Coordinates: 64.3° South, 57.4° West (view map)
Paleocoordinates:62.2° South, 68.2° West
Basis of coordinate:estimated from map
Geographic resolution:hand sample
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Middle Campanian - Late/Upper Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Stratigraphy
Formation:Santa Marta Member:Hamilton Point
Stratigraphic resolution:bed
Stratigraphy comments: "middle to upper Campanian"
Lithology and environment
Primary lithology:bioturbation silty mudstone
Lithology description: the "member consists of monotonous bioturbated silty mudstones, interbedded with arc-derived thin planar ash layers" and the fossils are from the mudstones (duh)
Environment:coastal indet.
Geology comments: "shallow marine"
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Collection methods and comments
Collection methods:bulk,chemical,peroxide,sieve
Minimum sieve size:0.125
Reason for describing collection:taxonomic analysis
Collection dates:1994, 1995
Collection method comments: 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"
Taxonomic list comments:"both calcareous and agglutinaed benthic foraminifers" in most samples and "microgastropods" in some were presented but not identified
Metadata
Database number:93956
Authorizer:J. Alroy Enterer:J. Alroy
Research group:micropaleontology
Created:2010-02-07 14:23:13 Last modified:2010-02-07 16:23:13
Access level:the public Released:2010-02-07 14:23:13
Creative Commons license:CC BY
Reference information

Primary reference:
31941. 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]