Woodring Loc. 161a - Gatun Dam [middle Gatun Fm] (Miocene of Panama)

Also known as USGS 8395; WG161a

Where: Colon, Panama (9.3° N, 79.9° W: paleocoordinates 9.0° N, 78.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: middle Gatun Member (Gatun Formation), Tortonian (11.6 - 7.2 Ma)

• LITHOSTRATIGRAPHY: From middle part of the Gatun Formation. The Gatun Formation is sibdivided into three faunal zones (proposed by Thomson and Keen, 1946): lower, middle, and upper. AGE: Late Miocene, on the basis of microfossil biostratigraphy (see Collins and Coates, 1999), refined by enterer to Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 10.1 Ma (Hendy, unpublished data).

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified siltstone and poorly lithified, silty sandstone

• No specific environmental data presented.
• LITHOLOGY: Siltstone and silty sandstone.

Size class: macrofossils

Preservation: original aragonite

Collected by Olsson in 1918; reposited in the USNM

Collection methods: surface (float), surface (in situ),

• COLLECTOR: A.A. Olsson. REPOSITORY: USNM.

Primary reference: W. P. Woodring. 1957. Geology and Paleontology of Canal Zone and adjoining parts of Panama. United States Geological Survey Professional Paper 306(A) [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 145335: authorized by Austin Hendy, entered by Austin Hendy on 01.06.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropods and bivalves. NOMENCLATURE: Authoritative publications, with modern nomenclature, and species-resolution identifications.
Bivalvia
 Arcida - Arcidae
Anadara (Rasia) dariensis5 Brown and Pilsbry 1911 ark
SUBSPECIES: Anadara (Rasia) dariensis dariensis
 Pectinida - Pectinoidae
Lepidopecten scissuratus6 Dall 1898 scallop
 Pholadida - Corbulidae
Caryocorbula oropendula6 Olsson 1922 clam
SUBSPECIES: Caryocorbula oropendula stena
 Cardiida - Veneridae
"Agiopoma (Pitarella) gatunensis" = Callocardia (Agriopoma) gatunensis6, "Macrocallista (Paradione) maculata" = Macrocallista maculata6
"Agiopoma (Pitarella) gatunensis" = Callocardia (Agriopoma) gatunensis6 Dall 1903 venus clam
"Macrocallista (Paradione) maculata" = Macrocallista maculata6 Linnaeus 1758 venus clam
 Cardiida - Tellinidae
Tellina (Eurytellina) angulosa6 Gmelin 1791 tellin clam
SUBSPECIES: Tellina (Eurytellina) angulosa costaricana
 Cardiida - Cardiidae
Trachycardium (Dallocardia) dominicense6 Gabb 1873 cockle
SUBSPECIES: Trachycardium (Dallocardia) dominicense dominicense
 Protobranchia - Nuculanidae
Saccella balboae5 Brown and Pilsbry 1911 pointed nut clam
Gastropoda
 Neogastropoda - Olividae
"Oliva (Oliva) gatunensis" = Oliva gatunensis3
"Oliva (Oliva) gatunensis" = Oliva gatunensis3 Toula 1908 olive snail
 Neogastropoda - Columbellidae
Strombina (Strombina) lessepsiana3 Brown and Pilsbry 1911 snail
Anachis (Costoanachis) mira3 Dall 1896 snail
SUBSPECIES: Anachis (Costoanachis) mira fugax
 Neogastropoda - Buccinidae
Cymatophos veatchi3, Metula gabbi3, "Antillophos (Antillophos) candei" = Antillophos candeanus3, Hanetia dalli3
Cymatophos veatchi3 Olsson 1922 true whelk
Metula gabbi3 Brown and Pilsbry 1911 true whelk
"Antillophos (Antillophos) candei" = Antillophos candeanus3 d'Orbigny 1842 true whelk
SUBSPECIES: Antillophos (Antillophos) candei gatunensis
Hanetia dalli3 Brown and Pilsbry 1911 true whelk
SUBSPECIES: Hanetia dalli dalli
 Neogastropoda - Cancellariidae
"Cancellaria (Cancellaria) epistomifera" = Bivetiella epistomifera4
"Cancellaria (Cancellaria) epistomifera" = Bivetiella epistomifera4 Guppy 1876 snail
SUBSPECIES: Cancellaria (Cancellaria) epistomifera dariena
 Neogastropoda - Marginellidae
Volvarina leander4 Brown and Pilsbry 1911 margin shell
 Neogastropoda - Turbinellidae
"Xancus validus" = Turbinella valida3
"Xancus validus" = Turbinella valida3 Sowerby 1850 snail
Xancus validus falconensis in Woodring (1964); Xancus dodonaius praelavigatus
 Neogastropoda - Muricidae
"Paziella (Panamurex) gatunensis" = Poirieria (Panamurex) gatunensis2
"Paziella (Panamurex) gatunensis" = Poirieria (Panamurex) gatunensis2 Brown and Pilsbry 1911 murex snail
 Neogastropoda - Drilliidae
Clathrodrillia gatunensis4, "Crassispira (Hindsiclava) consors" = Hindsiclava consors4
Clathrodrillia gatunensis4 Toula 1909 snail
"Crassispira (Hindsiclava) consors" = Hindsiclava consors4 Sowerby 1850 snail
SUBSPECIES: Crassispira (Hindsiclava) consors consors
 Neogastropoda - Turridae
Polystira sp.1 Woodring 1928 turrid
 Neogastropoda - Conidae
Conus imitator4 Brown and Pilsbry 1911 cone shell
SUBSPECIES: Conus imitator imitator
 Neogastropoda - Terebridae
Strioterebrum spiriferum4 Dall 1895 auger snail
 Naticoidea - Naticidae
Natica (Natica) bolus, "Natica (Naticarius) stenopa" = Naticarius, Polinices canalizonalis
Natica (Natica) bolus Brown and Pilsbry 1913 moon snail
"Natica (Naticarius) stenopa" = Naticarius moon snail
 Tonnoidea - Tonnidae
Malea camura2 Guppy 1866 tun shell
 Tonnoidea - Cassidae
Sconsia laevigata2 Guppy 1850 snail
SUBSPECIES Sconsia laevigata sublaevigata
 Sorbeoconcha - Turritellidae
Turritella gatunensis Conrad 1857 turret shell
SUBSPECIES: Turritella gatunensis gatunensis
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium (Dentalium) armillatum5 tusk shell
SUBSPECIES: Dentalium (Dentalium) armillatum armillatum