KT section Bajada del Jagüel, Neuquén Basin, BJG_Bmi1: Late/Upper Maastrichtian, Argentina
collected by Aberhan, M., Weidemeyer, S. 17032004

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Nuculanida - Nuculanidae
Nuculana cf. amuriensis
1 individual
Bivalvia - Lucinida - Lucinidae
Pteromyrtea sp. Finlay 1926
3 individuals
Bivalvia - Arcida - Parallelodontidae
Nemodon sulcatinus (Evans and Shumard 1857)
2 individuals
recombined as Grammatodon (Cosmetodon) sulcatinus
Bivalvia - Ostreida - Pteriidae
Phelopteria sp. Stephenson 1953
2 individuals
Bivalvia - Ostreida - Gryphaeidae
Pycnodonte vesicularis (Lamarck 1806)
16 individuals
    = Pycnodonte (Phygraea) vesicularis Lamarck 1806
Brezina et al. 2014
recombined as Pycnodonta vesicularis
Bivalvia - Pectinida - Limidae
Pseudolimea angusta
3 individuals
Bivalvia - Pectinida - Anomiidae
Paranomia sp. Conrad 1860
1 individual
    = Anomia sp. Linnaeus 1758
Aberhan 2010
Bivalvia - Pectinida - Pectinidae
Lyriochlamys modestus
20 individuals
Camptonectes (Camptochlamys) aff. tutorae Casadío et al. 2005
2 individuals
Bivalvia - Pectinida - Entoliidae
Entolium (Entolium) membranaceum (Nilsson 1827)
25 individuals
recombined as Pecten (Syncyclonema) membranaceus
see common names

Geography
Country:Argentina State/province:Neuquén
Coordinates: 38.1° South, 68.4° West (view map)
Paleocoordinates:40.4° South, 56.3° West
Basis of coordinate:unpublished field data
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Geological group:Malargüe Formation:Jagüel
Local section:Bajada del Jagüel K/T interval Local bed:-0.55 m
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: K/T boundary (top of boundary bed) is at 0 m. Beds lumped over 0.70 m. Data from bed/horizon refers to midpoint of sampled beds.
Lithology and environment
Primary lithology:green,yellow lithified calcareous mudstone
Includes fossils?Y
Environment:offshore Tectonic setting:foreland basin
Geology comments: mid to outer shelf environment, below normal wave base.
Taphonomy
Modes of preservation:body,cast,mold/impression,original calcite,replaced with calcite
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,mechanical,field collection,observed (not collected)
Reason for describing collection:paleoecologic analysis
Collectors:Aberhan, M., Weidemeyer, S. Collection dates:17.03.2004
Taxonomic list comments:Fish fragments were reported but not included.
Metadata
Database number:73997
Authorizer:W. Kiessling, E. Vlachos Enterer:S. Weidemeyer, F. Aspromonte, W. Kiessling
Modifier:M. Manojlovic Research group:marine invertebrate
Created:2007-07-16 10:56:13 Last modified:2017-05-23 16:34:15
Access level:the public Released:2007-07-16 10:56:13
Creative Commons license:CC BY
Reference information

Primary reference:
24819. S. Weidemeyer. 2007. Molluscs at the K/Pg boundary in Argentina: Extinction and recovery patterns. unpublished Ph.D. thesis. [W. Kiessling/S. Weidemeyer]

Secondary references:

34080 M. Aberhan. 2010. Cretaceous bivalves: taxonomic opinions. [W. Kiessling/W. Kiessling]
86521 S. S. Brezina, M. V. Romero, S. Casadío and C. Bremec. 2014. Boring polychaetes associated with Pycnodonte (Phygraea) vesicularis (Lamarck) from the upper Cretaceous of Patagonia. A case of commensalism?. Ameghiniana 51(2):129-140 [E. Vlachos/F. Aspromonte/F. Aspromonte]