Quebrada Penitas [Penita Fm]: Late Pliocene, Costa Rica

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Mytilida - Mytilidae
Bivalvia - Carditida - Crassatellidae
Eucrassatella gibbosa (Sowerby 1832)
Bivalvia - Cardiida - Veneridae
Bivalvia - Cardiida - Cardiidae
Gastropoda - Pseudomelaniidae
Crassispira sp. Swainson 1840
Gastropoda - Naticidae
Natica broderipiana Récluz 1844
Gastropoda - Neogastropoda - Clavatulidae
Gastropoda - Neogastropoda - Terebridae
Gastropoda - Neogastropoda - Conidae
Gastropoda - Neogastropoda - Turridae
Gastropoda - Neogastropoda - Conidae
Conus regularis Sowerby 1841
Gastropoda - Neogastropoda - Columbellidae
Strombina recurva (Sowerby 1832)
Gastropoda - Neogastropoda - Buccinidae
Cantharus elegans (Guppy 1866)
Gastropoda - Bursidae
Gastropoda - Neogastropoda - Buccinidae
Gastropoda - Neogastropoda - Cancellariidae
Gastropoda - Neogastropoda - Muricidae
Thais cf. biserialis (de Blainville 1832)
Gastropoda - Neogastropoda - Olividae
Oliva spicata (Durham 1950)
Gastropoda - Neogastropoda - Costellariidae
Gastropoda - Personidae
Distorsio decussatus (Valenciennes 1832)
see common names

Geography
Country:Costa Rica
Coordinates: 8.2° North, 83.0° West (view map)
Paleocoordinates:8.7° North, 82.4° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Pliocene
Stage: Piacenzian 10 m.y. bin: Cenozoic 6
Key time interval: Late Pliocene
Age range of interval: 3.6 - 2.58 m.y. ago
Stratigraphy
Geological group:Charco Azul Formation:Penita
Stratigraphic resolution:bed
Stratigraphy comments: LITHOSTRATIGRAPHY: From Charco Azul Formation (Olsson 1942), which unconformably underlies the Armurelles Fm (Pleistocene). AGE: Pliocene as it is overlain by very different Pleistocene fauna Age supported by other sources, including Collins and Coates (1999). Correlated to Jama and Canoa Formations of Ecuador. STRAIGRAPHIC POSITION: From basal part of formation, only a short distance above basement andesite.
Lithology and environment
Primary lithology:tuffaceous unlithified "shale"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Soft tuffaceous shale. LITHIFICATION: Unlithified, base on figured specimens and lithologic description.
Environment:offshore
Geology comments: ENVIRONMENT: Deposited in deeper waters, probably between 100 and 400 fathoms.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:PRI
Collection method comments: COLLECTORS: Presumably collected by A.A. Olsson. REPOSITORIES: Collections reposited at PRI.
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: An authoratative publication, although somewhat antiquated. However, all occurrences include species-resolution assignments and subgeneric classification.
Metadata
Database number:66793
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2006-10-16 10:15:54 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-10-16 10:15:54
Creative Commons license:CC0
Reference information

Primary reference:
17423. A. A. Olsson. 1942. Tertiary and Quaternary fossils from Burica Peninsula of Panama and Costa Rica. Bulletins of American Paleontology 27(106):1-106 [A. Miller/A. Hendy/A. Hendy]