General Roca: Danian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Phymosomatidae
Micropsis desori Leymerie and Cotteau 1856
Parma and Casadío 2005 1 specimen
GHUNLPam 22006
unclassified
Selachia indet.
see p. 6
Diplodetis nutrix
Parma and Casadío 2005 1 specimen
GHUNLPam22020
Echinoidea - Nucleolitidae
Pygopistes parrasae n. sp. Parma and Casadío 2005
Parma and Casadío 2005
Echinoidea - Spatangoida - Schizasteridae
Schizaster sp. Agassiz 1835
see p. 6
Paraster joannisboehmi Parma and Casadío 2005
Parma and Casadío 2005 13 specimens
CPBA6440, CPBA6468A-C, GHUNLPam22066–22075, GHUNLPam22151
Cephalopoda - Nautilida - Hercoglossidae
Cimomia camachoi Masiuk 1967
Casadío et al. 1999 4 specimens
MLP 8676, 9659, 949, 955
Hercoglossa romeroi (Ihering 1903)
Casadío et al. 1999 1 specimen
MACN 543
Cephalopoda - Nautilida - Nautilidae
Eutrephoceras sp. Hyatt 1894
Casadío et al. 1999 2 specimens
GHUNLPam 4981 and 4991
Gastropoda - Turritellidae
Turritella aff. malaspina
Gastropoda - Neogastropoda - Nassariidae
? Fusus sp. Bruguière 1789
see p. 6
Bivalvia - Nuculida - Nuculidae
Nucula (Leionucula) dynastes
original and current combination Leionucula
N. (Leionucula)
Bivalvia - Ostreida - Ostreidae
Odontogryphaea sp. n. sp. Ihering 1903
Ostrea wilckensis
Malacostraca - Decapoda - Carcinidae
Proterocarcinus lophos n. sp. Feldmann et al. 1995
1 specimen
recombined as Archaeogeryon lophos
MLP 8769 (holotype)
Malacostraca - Decapoda - Retroplumidae
Costacopluma australis n. sp. Feldmann et al. 1995
4 specimens
GHUNLPam 7001 (holotype), 7002-7003, 7005
Malacostraca - Decapoda - Hexapodidae
Thaumastoplax rocaensis n. sp. Feldmann et al. 1995
6 specimens
recombined as Palaeopinnixa rocaensis
GHUNLPam 7006 (holotype), 7007-7009, 7026 and 70027
Malacostraca - Decapoda - Euryplacidae
? Glyphithyreus wichmanni n. sp. Feldmann et al. 1995
5 specimens
recombined as Chirinocarcinus wichmanni
GHUNLPam 7015 (holotype), 7004, 7016-7018
Malacostraca - Decapoda - Tumidocarcinidae
Xanthilites gerthi Glaessner 1930
1 specimen
GHUNLPam 7010
Lobonotus lobulata n. sp. Feldmann et al. 1995
12 specimens
GHUNLPam 7011 (holotype), 7012-7014, 7020-7022, 7024, 7028, 7037-7039
Malacostraca - Decapoda - Callianassidae
Protocallianassa sp. Beurlen 1930
2 specimens
GHUNLPam 7032-7033
Callianassa burckhardi
1 specimen
GHUNLPam 7042
Thecostraca
Cirripedia indet. Rafinesque 1816
see p. 6
Foraminiferida
Foraminiferida indet. (Eichwald 1830)
spelled with current rank as Foraminifera
unclassified
Thalassinoides sp. Ehrenberg 1944
see common names

Geography
Country:Argentina State/province:Rio Negro
Coordinates: 39.0° South, 67.5° West (view map)
Paleocoordinates:41.6° South, 56.0° West
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Paleocene
Stage:Danian 10 m.y. bin:Cenozoic 1
*Period:Early/Lower Tertiary *Epoch:Early/Lower Paleocene
*International age/stage:Early/Lower Danian
Key time interval:Danian
Age range of interval:66.00000 - 61.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Roca
Stratigraphic resolution:member
Stratigraphy comments: material from at least four levels spanning > 10 m
Lithology and environment
Primary lithology:shelly/skeletal,yellow poorly lithified marl
Environment:deep subtidal ramp
Geology comments: "distal platform environment at the base to lagoonal facies toward the top" of section; fossils are from lower half; on p. 6 the taxonomic association is said to "indicate a low energy pelitic sublittoral environment." Fossils are shown as being from a mudstone in section, presumably meaning a lime mudstone because formational lithology is "carbonates". Section consists of greenish marls intercalated with thin coquinas that are lenticular and have planar or erosive lower contacts. The coquinas suggest storm deposits, indicating a deep subtidal environment.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:all microfossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Taxonomic list comments:forams described by Bertels by not listed here
Metadata
Database number:5162
Authorizer:J. Alroy, M. Clapham Enterer:J. Alroy, M. Clapham, A. Doyle
Modifier:M. Clapham Research group:marine invertebrate
Created:1999-09-01 11:15:52 Last modified:2019-08-07 23:37:21
Access level:the public Released:1999-09-01 11:15:52
Creative Commons license:CC BY
Reference information

Primary reference:
310. R. M. Feldmann, S. Casadío, L. Chirino-Galvez and M. Aguirre-Urreta. 1995. Fossil decapod crustaceans from the Jaguel and Roca Formations (Maastrichtian-Danian) of the Neuquen Basin, Argentina. Journal of Paleontology 69(5 II):1-22 [J. Alroy/J. Alroy/F. Aspromonte]

Secondary references:

55692 S. Casadío, M. F. Rodriguez, V. A. Reichler and H. H. Camacho. 1999. Tertiary nautiloids from Patagonia, southern Argentina. Ameghiniana 36:189-202 [M. Clapham/M. Clapham]
38745 S. G. Parma and S. Casadío. 2005. Upper Cretaceous-Paleocene Echinoids from Northern Patagonia, Argentina. Journal of Paleontology 79(6):1072-1087 [J. Alroy/A. Doyle/F. Aspromonte]