PPP# 451 - Bomba [Rio Banano Fm] (Pliocene of Costa Rica)

Also known as NMB Loc. 17774

Where: Limon, Costa Rica (9.9° N, 83.1° W: paleocoordinates 9.8° N, 83.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Rio Banano Formation (Limon Group), Piacenzian (3.6 - 2.6 Ma)

• The Rio Banano Formation sits diachronously with abrupt lithological transition on the Uscari Formation, mostly conformably and sometimes disconformably. The Rio Banano Formation passes conformably into the Quebrada Chocolate Formation in the area immediately west of Limon but throughout most of the southern Limon Basin it is unconformably overlain by the breccia and coarse grained volcaniclastics of the Suretka Formation. AGE: direct date extrapolated from Bybell (1999) and Collins et al. (1999).

• bed-level stratigraphic resolution

Environment/lithology: deltaic; bioturbated, coarse-grained, concretionary, tuffaceous sandstone and burrowed, tuffaceous, silty siltstone

• Thick deltaic succession.
• The sections at Quitaria and Bomba show two relatively thin, richly fossiliferous marine units with a thick deltaic section of burrow-mottled, coarse, tuffaceous, concretionary sandstone that frequently contains basalt pebbles, leaves, seeds and wood fragments. The lower marine section is exposed showing 15m of burrow-mottled, shelly clayey siltstone and silty, tuffaceous sanstone wiht frequent shelly stringers and lenses that contain an abundant and diverse marine mollusk and bryozoan assemblage. Thallasinoid burrow systems are common, often packed with shell hash, as are slabby and irregular concretion zones.

Size class: macrofossils

Collected by Jung & Panhcaud in 1988; reposited in the NMB

Collection methods: bulk, sieve,

• COLLECTORS: Peter Jung, R. Panchaud & Claudia Mora, 27.3.1988. REPOSITORIES: Naturhistorisches Museum Basel (NMB).

Primary reference: L. S. Collins and A. G. Coates. 1999. A paleobiotic survey of Caribbean faunas from the Neogene of the Isthmus of Panama. Bulletins of American Paleontology (357) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 79799: authorized by Arnold Miller, entered by Kate Bulinski on 24.03.2008, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, bivalvia and scaphopoda. NOMENCLATURE: modern nomenclature, though only identified to subgenus resolution.
unclassified
  -
Bivalvia
 Nuculanida - Nuculanidae
Saccella sp. Woodring 1925 pointed nut clam
 Lucinida - Lucinidae
Parvilucina sp. Dall 1901 clam
sensu lato
 Cardiida - Cardiidae
Trachycardium sp. Mörch 1853 cockle
sensu lato
 Cardiida - Veneridae
Lirophora sp. Conrad 1863 venus clam
Chione sp. von Mühlfield 1811 venus clam
Pitar sp. Römer 1857 venus clam
 Cardiida - Chamidae
Chama sp. Linnaeus 1758 jewel box
 Pholadida - Corbulidae
Caryocorbula sp. Gardner 1926 clam
 Carditida - Crassatellidae
 Arcida - Arcidae
Anadara (Rasia) sp. Gray 1857 ark
Anadara (Potiarca) sp. Iredale 1939 ark
 Arcida - Glycymerididae
Tucetona sp. Iredale 1939 clam
 Pectinida - Limidae
? Lima sp. Bruguière 1797 file clam
 Pectinida - Propeamussiidae
Cyclopecten sp. Verrill 1897 mud scallop
 Mytilida - Crenellidae
Crenella sp. Brown 1827 clam
Gastropoda
 Opisthobranchia - Retusidae
Sulcoretusa sp. Burch 1945 snail
 Thecosomata - Cavoliniidae
Creseis sp. Rang 1828 snail
 Thecosomata - Limacinidae
Limacina sp. Bosc 1817 snail
 Trochoidea - Trochidae
? Calliostoma sp. Swainson 1840 top snail
 Pseudomelanoidea - Pseudomelaniidae
Carinodrillia sp. Dall 1919 snail
 Epitonioidea - Epitoniidae
Epitonium sp. Bolten 1798 wentletrap
 Sorbeoconcha - Vermetidae
"Petaloconchus sp." = Petaloconchus, Serpulorbis sp.
"Petaloconchus sp." = Petaloconchus Lea 1843 worm shell
Serpulorbis sp. Sasso 1827 worm shell
 Sorbeoconcha - Naticidae
Natica sp. Scopoli 1777 moon snail
Stigmaulax sp. Morch 1852 moon snail
Sinum sp. Röding 1798 moon snail
 Sorbeoconcha - Atlantidae
Atlanta sp. Lesueur 1817 snail
 Sorbeoconcha - Strombidae
Strombus sp. Linnaeus 1758 conch
 Sorbeoconcha - Personidae
Distorsio clathrata Lamarck 1816 snail
 Neogastropoda - Muricidae
Haustellum sp. Schumacher 1817 murex snail
 Neogastropoda - Volutidae
Voluta sp. Linnaeaus 1758 volute
 Neogastropoda - Marginellidae
Volvarina sp. Hinds 1844 margin shell
Dentimargo sp. Cossmann 1899 margin shell
Prunum sp. Swainson 1840 margin shell
 Neogastropoda - Drilliidae
Hindsiclava sp. Hertlein and Strong 1955 snail
Clathrodrillia sp. Dall 1918 snail
 Neogastropoda - Turridae
Polystira sp. Woodring 1928 turrid
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
 Neogastropoda - Olividae
Olivella (Minioliva) sp. Olsson 1956 olive snail
Olivella (Dactylidella) sp. Woodring 1928 olive snail
Oliva (Oliva) sp. Bruguière 1789 olive snail
 Neogastropoda - Buccinidae
Solenosteira sp. Dall 1890 true whelk
Antillophos (Antillophos) sp. Woodring 1928 true whelk
 Neogastropoda - Cancellariidae
Aphera sp. Adams and Adams 1854 snail
 Cerithioidea - Cerithiidae
Alabina sp. Dall 1902 cerith snail
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
 Heterostropha - Pyramidellidae
Eulimastoma sp. Bartsch 1916 snail
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
sensu lato
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
Anthozoa
 Scleractinia - Caryophylliidae
Antillocyathus cristatus Vaughan and Hoffmeister 1925 stony coral