Quebrada Penitas [Penita Fm] (Pliocene of Costa Rica)

Where: Costa Rica (8.0° N, 83.0° W: paleocoordinates 7.9° N, 82.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Penita Formation (Charco Azul Group), Late/Upper Pliocene (3.6 - 2.6 Ma)

• 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: About 300 ft above the basal sandstones.

• bed-level stratigraphic resolution

Environment/lithology: offshore; unlithified, tuffaceous shale

• ENVIRONMENT: Deposited in deeper waters, probably between 100 and 400 fathoms.
• SPECIFIC LITHOLOGY: Soft tuffaceous shale. LITHIFICATION: Unlithified, base on figured specimens and lithologic description.

Size class: macrofossils

Reposited in the PRI

Collection methods: quarrying,

• COLLECTORS: Presumably collected by A.A. Olsson. REPOSITORIES: Collections reposited at PRI.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 66794: authorized by Austin Hendy, entered by Austin Hendy on 16.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: An authoratative publication, although somewhat antiquated. However, all occurrences include species-resolution assignments and subgeneric classification.
Gastropoda
 Heterostropha - Ringiculidae
 Neogastropoda - Columbellidae
Strombina fusiformis Hinds 1844 snail
 Neogastropoda - Fasciolariidae
Latirus penitus n. sp. snail
 Neogastropoda - Nassariidae
"Nassa (Arcularia) puntablancoensis" = Nassarius (Arcularia), Tritiaria ? ecuadoriana
"Nassa (Arcularia) puntablancoensis" = Nassarius (Arcularia) snail
Tritiaria ? ecuadoriana Pilsbry and Olsson 1941 snail
 Neogastropoda - Buccinidae
Cymatophos galerus Pilsbry and Olsson 1941 true whelk
"Phos (Antillophos) rutschi n. sp." = Antillophos (Antillophos) rutschi Olsson 1942 true whelk
 Neogastropoda - Cancellariidae
"Cancellaria (Calcarata) peninsularis n. sp." = Calcarata, Cancellaria (Cancellaria) penita n. sp., "Cancellaria (Charcolleria) terryi n. sp." = Massyla terryi
"Cancellaria (Calcarata) peninsularis n. sp." = Calcarata snail
Cancellaria (Cancellaria) penita n. sp. Olsson 1942 snail
"Cancellaria (Charcolleria) terryi n. sp." = Massyla terryi Olsson 1942 snail
 Neogastropoda - Mitridae
Mitra cyclica n. sp. mitre shell
 Neogastropoda - Drilliidae
 Neogastropoda - Conidae
"Conus (Leptoconus) cacuminatus" = Conus cacuminatus, "Conus (Leptoconus) arcuatus" = Conus arcuatus
"Conus (Leptoconus) cacuminatus" = Conus cacuminatus Spieker 1922 cone shell
"Conus (Leptoconus) arcuatus" = Conus arcuatus Sowerby 1829 cone shell
SUBSPECIES: C. (L.) arcuatus vacuanus
 Neogastropoda - Pseudomelatomidae
"Clathrodrillia (Buridrillia) panarica n. sp." = Buridrillia panarica
"Clathrodrillia (Buridrillia) panarica n. sp." = Buridrillia panarica Olsson 1942 snail
 Neogastropoda - Muricidae
"Murex recurvirostris" = Vokesimurex recurvirostris
"Murex recurvirostris" = Vokesimurex recurvirostris Broderip 1832 murex snail
 Sorbeoconcha - Tonnidae
Malea ringens Swainson 1822 tun shell
Bivalvia
 Nuculanida - Nuculanidae
"Nuculana (Jupiteria) davidana n. sp." = Saccella davidana
"Nuculana (Jupiteria) davidana n. sp." = Saccella davidana Olsson 1942 pointed nut clam
 Nuculida - Nuculidae
"Acila isthmica" = Acila (Acila) isthmica
"Acila isthmica" = Acila (Acila) isthmica Brown and Pilsbry 1911 divaricate nutclam
SUBPECIES: A. isthmica burica
 Arcida - Arcidae
Arca (Scapharca) wheeleri Pilsbry and Olsson 1941 clam
Arca (Cunearca) esmeralda Pilsbry and Olsson 1941 ark
 Cardiida - Tellinidae
Tellina (Macaliopsis) frontera n. sp. tellin clam
"Macoma (Macoploma) medioamericana n. sp." = Macoma (Psammacoma) ecuadoriana Pilsbry and Olsson 1941 tellin clam
 Pholadida - Corbulidae
"Corbula ovulata" = Caryocorbula ovulata
"Corbula ovulata" = Caryocorbula ovulata Sowerby 1835 clam
 Thraciida - Periplomatidae