UCMP Locality RV-9502, The Naze, James Ross Island (Cretaceous of Antarctica)

Also known as Imperobator-type locality, CICYTTP-Pl 293, AC-26

Where: Antarctica (64.0° S, 57.5° W: paleocoordinates 62.3° S, 68.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Diplomoceras lambi ammonoid zone, Cape Lamb Member (Snow Hill Island Formation), Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• lower part of member

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, massive, gray sandstone and lithified, green, yellow, argillaceous, silty mudstone

• This 91 m section is composed of interbedded, green gray massive and laminated fine-grained quartz sandstones and greenish yellow argillaceous mudstones and siltstones, with thin layers of concretions and bentonite clays dispersed through the section.

Size classes: macrofossils, mesofossils, microfossils

Collection methods: bulk, surface (float), hydrochloric, hydroflouric,

Primary reference: J. A. Case, J. E. Martin, and M. A. Reguero. 2007. A dromaeosaur from the Maastrichtian of James Ross Island and the Late Cretaceous Antarctic dinosaur fauna. In A. K. Cooper, C. R. Raymond, & the ISAES Editorial Team (eds.), Antarctica: A Keystone in a Changing World. Online Proceedings of the 10th ISAES. United States Geological Survey and the National Academies. USGS Open-File Report 2007-1047, Short Research Paper 083:1-4 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 75458: authorized by Matthew Carrano, entered by Matthew Carrano on 10.10.2007, edited by Franco Aspromonte and Graeme Lloyd

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Lycopodiopsida
 Lycopodiales -
Retitriletes austroclavatidites2 Döring et al. 1963 clubmoss
Sphenopsida
  -
Calamospora sp.2 Schopf et al.
Magnoliopsida
  -
Angiospermae
 Proteales -
Peninsulapollis gillii2 Dettmann and Jarzen 1988
 Fagales -
Nothofagidites sp.2 Potonié 1960
"spp."
 Coniferales - Podocarpaceae
Dacrycarpites australiensis2 Cookson and Pike 1953 podocarp
Phyllocladidites mawsonii2 Cookson 1947 podocarp
Podocarpidites sp.2 Cookson 1947 podocarp
"spp."
Podocarpidites otagoensis2 Couper 1953 podocarp
Pteridopsida
  -
Todisporites sp.2 Couper 1958
"Todisporites major /T. minor"
Polypodiopsida
  - Dicksoniaceae
Trilites parvallatus2 Krutzsch 1959
Cyatheacidites annulatus2 Cookson 1947
 Life -
Nummus monoculatus2 Morgan 1975 acritarchs
Reptilia
 Plesiosauria -
Plesiosauroidea indet.1 Welles 1943 plesiosaur
MLP 78-XI-1-2
 Theropoda - Dromaeosauridae
Imperobator antarcticus n. gen. n. sp.3
Imperobator antarcticus n. gen. n. sp.3 Ely and Case 2019 maniraptoran
limb materials; UCMP276000
Dinophyceae
  -
Trichodinium castanea2 Clarke and Verdier 1967
 Peridiniales - Peridiniaceae
Manumiella seelandica2 Bujak and Davies 1983
Isabelidinium cretaceum2 Lentin and Williams 1977
incl. Isabelidinium cretaceum gravidum
Isabelidinium pellucidum2 Lentin and Williams 1977
 Peridiniales - Protoperidiniaceae
  -
Spiniferites ramosus2 Lentin and Williams 1973
"S. ramosus (ramosus-multibrevis-granosus) complex"
 Gonyaulacales -
 Gonyaulacales - Gonyaulacaceae
 Dinoflagellata -
Paralecaniella indentata2 Cookson and Eisenack 1970
Palambages sp.2 Wetzel 1961
"spp."