Mount Hope [upper Gatun Fm] (Miocene of Panama)

Where: Panama (9.3° N, 79.9° W: paleocoordinates 9.1° N, 78.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• LITHOSTRATIGRAPHY: From the Gatun Formation, which unconformably overlies either volcanic basement of Caimito Formation (late Oligocene), and is unconformably overlain by the Chagres Formation. AGE: Late Miocene; constrained by biostratigraphy of multiple groups (foraminifera, nannoplankton); refined by enterer to Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 9.9 Ma (Hendy, unpublished data). STRATIGRAPHIC POSITION: Probably from base of upper member (enterer's opinion).

• formation-level stratigraphic resolution

Environment/lithology: coastal; siliciclastic sediments

• No paleoenvironmental data provided, but assumed to be from shallow marine facies (enterer's opinion).
• LITHIFICATION: Unknown. LITHOLOGY: No lithologic data provided, but assumed to be siliciclastic.

Size class: macrofossils

Collected by Olsson; reposited in the PRI

Collection methods: surface (in situ),


Primary reference: A. A. Olsson. 1922. The Miocene of Northern Costa Rica. Bulletins of American Paleontology 9(39):1-309 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 134662: authorized by Austin Hendy, entered by Austin Hendy on 12.10.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• NOMENCLATURE: Authoritative publication, with species-resolution identifications, and antiquated nomenclature. COVERAGE: Exhaustive for mollusk.
 Arcida - Arcidae
"Arca (Scapharca) veatchi" = Anadara (Tosarca) veatchi, "Arca (Scapharca) actinophora" = Anadara (Rasia) actinophora, "Arca (Scapharca) dariensis" = Anadara (Rasia) dariensis
"Arca (Scapharca) veatchi" = Anadara (Tosarca) veatchi Olsson 1922 ark
"Arca (Scapharca) actinophora" = Anadara (Rasia) actinophora Dall 1898 ark
"Arca (Scapharca) dariensis" = Anadara (Rasia) dariensis Brown and Pilsbry 1911 ark
 Cardiida - Veneridae
"Chione holocyma" = Lirophora holocyma, "Chione mactropsis" = Lirophora (Panchione) mactropsis, "Callocardia gatunensis" = Callocardia (Agriopoma) gatunensis
"Chione holocyma" = Lirophora holocyma Brown and Pilsbry 1911 venus clam
"Chione mactropsis" = Lirophora (Panchione) mactropsis Conrad 1855 venus clam
"Callocardia gatunensis" = Callocardia (Agriopoma) gatunensis Dall 1903 venus clam
 Cardiida - Tellinidae
"Macoma panamensis" = Psammacoma panamensis
"Macoma panamensis" = Psammacoma panamensis Dall 1900 tellin clam
SUBSPECIES: Macoma panamensis canalis
 Cardiida - Cardiidae
"Protocardia (Lophocardium) gurabica" = Nemocardium (Lophocardium) gurabica
"Protocardia (Lophocardium) gurabica" = Nemocardium (Lophocardium) gurabica Maury 1917 cockle
 Neogastropoda - Olividae
Oliva gatunensis Toula 1908 olive snail
 Neogastropoda - Columbellidae
"Strombina lessepsiana" = Strombina (Strombina) lessepsiana
"Strombina lessepsiana" = Strombina (Strombina) lessepsiana Brown and Pilsbry 1911 snail
 Neogastropoda - Buccinidae
Metula gabbi, "Phos metuloides" = Antillophos (Rhipophos) metuloides, "Solenosteira dalli" = Hanetia dalli
Metula gabbi Brown and Pilsbry 1911 true whelk
"Phos metuloides" = Antillophos (Rhipophos) metuloides Dall 1896 true whelk
"Solenosteira dalli" = Hanetia dalli Brown and Pilsbry 1911 true whelk
 Neogastropoda - Cancellariidae
"Cancellaria dariena" = Bivetiella dariena
"Cancellaria dariena" = Bivetiella dariena Toula 1908 snail
 Neogastropoda - Volutidae
"Halia americana" = Ampulla americana
"Halia americana" = Ampulla americana Olsson 1922 volute
 Neogastropoda - Drilliidae
"Drillia consors" = Hindsiclava consors
"Drillia consors" = Hindsiclava consors Sowerby 1850 snail
 Neogastropoda - Conidae
Conus tortuosopunctatus Toula 1911 cone shell
Conus imitator Brown and Pilsbry 1911 cone shell
 Neogastropoda - Terebridae
"Terebra wolfgangi" = Strioterebrum wolfgangi, "Terebra gausapata" = Strioterebrum gausapatum, "Terebra gatunensis" = Strioterebrum gatunensis, "Terebra subsulcifera" = Terebra (Oreoterebra) subsulcifera
"Terebra wolfgangi" = Strioterebrum wolfgangi Toula 1909 auger snail
"Terebra gausapata" = Strioterebrum gausapatum Brown and Pilsbry 1911 auger snail
"Terebra gatunensis" = Strioterebrum gatunensis Toula 1908 auger snail
"Terebra subsulcifera" = Terebra (Oreoterebra) subsulcifera Brown and Pilsbry 1911 auger snail