Cerro Bosta: Maastrichtian, Argentina
collected by Z. Gasparini

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Dipnoi - Ceratodontidae
Metaceratodus baibanorum Panzeri et al. 2020
Panzeri et al. 2020 25 specimens
corrected as Metaceratodus baibianorum
Reptilia - Testudines - Chelidae
Chelidae informal indet. 2 Gray 1825
6 specimens
MPEF-PV 932, 913, 820, 826, 842, 908
Chelidae informal indet. 3 Gray 1825
4 specimens
MPEF-PV 935, 911, 874-875
Chelidae informal indet. 4 Gray 1825
3 specimens
MPEF-PV 878, 834, 910
Chelidae informal indet. 5 Gray 1825
5 specimens
MPEF-PV 819, 862, 865, 895, 897
Chelidae informal indet. 1 Gray 1825
11 specimens
MPEF-PV 818, 821, 844, 845, 848, 890, 891, 933, 934, 954, 957
    = Yaminuechelys aff. gasparinii de la Fuente et al. 2001
Gasparini et al. 2015
    = Yaminuechelys sulcipeculiaris Oriozabala et al. 2020
Oriozabala et al. 2020
Reptilia
Meiolaniidae indet. Lydekker 1887
1 specimen
MPEF-PV 10564
    = Patagoniaemys gasparinae Sterli and de la Fuente 2011
Gasparini et al. 2015
Reptilia - Plesiosauria - Polycotylidae
Sulcusuchus erraini Gasparini and Spalletti 1990
Gasparini et al. 2015 1 specimen
MPEF-PV 650, part of skull and mandible
Reptilia - Plesiosauria - Elasmosauridae
Elasmosauridae indet. Cope 1869
Gasparini et al. 2001 3 specimens
Numerous isolated vertebrae
see common names

Geography
Country:Argentina State/province:Chubut
Coordinates: 43.0° South, 67.6° West (view map)
Paleocoordinates:45.3° South, 56.0° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:La Colonia Member:Middle
Stratigraphic resolution:group of beds
Stratigraphy comments: "Middle levels of the La Colonia Formation (Page et al. 1999)" (O'Gorman et al. 2013)

La Colonia Fm = Maastrichtian (Clyde et al. 2021)
Lithology and environment
Primary lithology:massive,planar lamination muddy sandstone
Includes fossils?Y
Lithology description: "massive, laminated or heterolithic pelites with intercalations of beds, no more than 3.3 m thick, of massive, heterolithic (flaser) or trough-cross-bedded fine-grained sandstones." Fossils are "Associated with pelitic sectors"
Environment:marginal marine indet.
Glacial or sequence phase:transgressive
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Spatial orientation:random
Preservation of anatomical detail:good
Abundance in sediment:rare
Fragmentation:frequent
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:surface (in situ),field collection
Collection size:31 specimens
Reason for describing collection:general faunal/floral analysis
Collectors:Z. Gasparini
Metadata
Database number:99438
Authorizer:M. Carrano, E. Vlachos, P. Mannion Enterer:H. Street, M. Carrano, J. Tennant, E. Vlachos
Modifier:F. Aspromonte Research group:vertebrate
Created:2010-11-11 07:54:45 Last modified:2023-11-10 14:59:20
Access level:the public Released:2010-11-11 07:54:45
Creative Commons license:CC BY
Reference information

Primary reference:
34189. Z. Gasparini and M. de la Fuente. 2000. Tortugas y plesiosaurios de la Formacion la Colonia (Cretacico Superior) de Patagonia, Argentina. Revista Espanola de Paleontologia 15(1):23-35 [M. Carrano/H. Street]

Secondary references:

46158 Z. Gasparini, S. Casadio, M. Fernandez and L. Salgado. 2001. Marine reptiles from the Late Cretaceous of northern Patagonia. Journal of South American Earth Sciences 14(1):51-60 [P. Mannion/J. Tennant/F. Aspromonte]
54396 Z. Gasparini, J. Sterli, A. Parras, J. P. O'Gorman, L. Salgado, J. Varela, and D. Pol. 2015. Late Cretaceous reptilian biota of the La Colonia Formation, central Patagonia, Argentina: occurrences, preservation and paleoenvironments. Cretaceous Research 54:154-168 [P. Mannion/J. Tennant/M. Carrano]
86364 J. P. O'Gorman. 2015. Plesiosaurs (Diapsida, Sauropterygia) from Late Cretaceous (late Campanian-early Maastrichtian) marginal marine environments from North Patagonia. Publicación Electrónica de la Asociación Paleontológica Argentina 15(1):187-195 [E. Vlachos/F. Aspromonte]
86420 J. P. O'Gorman. 2016. Argentinean plesiosaurs: a commented account of main records, systematic and biogeographical patterns and comments on future perspectives. In F. L. Agnolín, G. L. Lio, F. Brissón Egli, N. R. Chimento, F. E. Novas (eds.), Historia Evolutiva y paleobiogeográfica de los vertebrados de América del Sur (6)37-45 [E. Vlachos/F. Aspromonte]
47110 J. P. O'Gorman and Z. Gasparini. 2013. Revision of Sulcusuchus erraini (Sauropterygia, Polycotylidae) from the Upper Cretaceous of Patagonia, Argentina. Alcheringa 37(2):163-176 [P. Mannion/J. Tennant/F. Aspromonte]
69691 C. Oriozabala, J. Sterli, and M. S. Fuente. 2020. New species of the long-necked chelid Yaminuechelys from the Upper Cretaceous (Campanian–Maastrichtian) of Chubut, Argentina. Cretaceous Research 106:104197:1-11 [P. Mannion/P. Mannion/P. Mannion]
74922 K. M. Panzeri, S. G. Cavalli, N. A. Muñoz and A. L. Cione. 2020. Metaceratodus baibianorum, a new dipnoan species from the Upper Cretaceous of southern South America supported by traditional and geometric morphometric analyses. Journal of Vertebrate Paleontology 40(2):e1769640:1-14 [M. Carrano/M. Carrano]