PPP# 224 - Isla Payardi [middle Gatun Fm] (Miocene of Panama)

Also known as NMB Loc. 17642

Where: Colon, Panama (9.4° N, 79.8° W: paleocoordinates 9.1° N, 78.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: The Gatun Fm rests unconformably on formations of different ages in different parts of the Panama Canal Basin. To the east of Colon, the Gatun Fm rests nonconformably on unamed Cretaceous volcanics. To the west of Colon, including several islands in Lake Gatun, the Gatun Fm rests with angular unconformity on the upper Oligocene Caimito Fm. Locality: Cativa. AGE: Tortonian based on more recent dating (Hendy, 2012). Sr dating for nearby sections indicates an age of approximately 10.5 Ma (Hendy, unpublished data).

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, gray, green siltstone and unlithified, bioturbated sandstone

• ENVIRONMENT: from Collins et al. (1999), open, inner neritic.
• GENERAL LITHOLOGY: The lower 5m of the lower Gatun Formation consists of volcanic conglomerate, with 1-5cm clasts and a tuffaceous, arkoskic matrix, cross-bedded, laminated, tuffaceous siltstone and alternating laminated sandstone and siltstone, mostly deeply weathered. The overlying 40m (Section 1) consists of massive, grey-green, clayey siltstone, with minor claystone and fine sandstone units. zones of densely packed large concretions, pervasive bioturbation, and extensive thalassinoid burrow systems, as well as simple vertical and lateral hash-filled burrows. Shell hash of varying grain size and density is almost ubiquitous, as are units packed with diverse, whole mollusks.

Size class: macrofossils

Reposited in the NMB

Collection methods: bulk, sieve,

• COVERAGE: Exhaustive for gastropoda, bivalvia and scaphopoda. COLLECTORS: unknown (PPP staff) collected 8/19/87. 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 79985: authorized by Austin Hendy, entered by Kate Bulinski on 31.03.2008, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

• NOMENCLATURE: modern nomenclature, though only identified to subgenus resolution. IDENTIFIER: presumably identified by J. Jackson, J. Todd, H. Fortunato, and P. Jung.
Show authors, comments, and common names
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp.
Cadulus sp. Philippi 1844 tusk shell
Gastropoda
 Heterostropha - Pyramidellidae
Pyramidellidae indet.
Pyramidellidae indet. Gray 1840 snail
 Heterostropha - Architectonicidae
Architectonica sp., Pseudotorinia sp.
Architectonica sp. Röding 1798 sundial
Pseudotorinia sp. Sacco 1892 snail
 Heterostropha - Acteonidae
Acteon sp.
Acteon sp. Montfort 1810 snail
 Heterostropha - Ringiculidae
Ringicula (Ringiculella) sp.
 Opisthobranchia - Retusidae
Volvulella (Volvulella) sp., Sulcoretusa sp.
Volvulella (Volvulella) sp. Newton 1891 snail
Sulcoretusa sp. Burch 1945 snail
 Opisthobranchia - Cylichnidae
Cylichnella sp., Acteocina sp.
Cylichnella sp. Gabb 1873 snail
Acteocina sp. Gray 1847 barrel-bubble
 Cerithioidea - Cerithiidae
Alabina sp.
Alabina sp. Dall 1902 cerith snail
 Cerithioidea - Turritellidae
Turritella sp.
Turritella sp. Lamarck 1799 turret shell
 Neotaenioglossa - Calyptraeidae
Crepidula sp., Crucibulum (Crucibulum) sp., Calyptraea sp.
Crepidula sp. Lamarck 1799 slipper shell
Crucibulum (Crucibulum) sp. Schumacher 1817 slipper shell
Calyptraea sp. Lamarck 1799 slipper shell
 Epitonioidea - Epitoniidae
Epitonium sp., Epitonium (Asperiscala) sp.
Epitonium sp. Bolten 1798 wentletrap
Epitonium (Asperiscala) sp. de Boury 1909 wentletrap
 Sorbeoconcha - Naticidae
Polinices sp., "Natica (Naticarius) sp." = Naticarius, Natica sp.
Polinices sp. Monfort 1810 moon snail
"Natica (Naticarius) sp." = Naticarius Dumeril 1806 moon snail
Natica sp. Scopoli 1777 moon snail
 Sorbeoconcha - Cerithiopsidae
Cerithiopsis sp.
Cerithiopsis sp. Hanley 1849 snail
 Sorbeoconcha - Tornidae
Teinostoma sp.
Teinostoma sp. Adams and Adams 1853 snail
 Sorbeoconcha - Vitrinellidae
Anticlimax sp., Cyclostremiscus (Ponocyclus) sp.
Anticlimax sp. Pilsbry and McGinty 1946 snail
 Sorbeoconcha - Caecidae
Caecidae indet.
Caecidae indet. Gray 1850 snail
 Neogastropoda - Columbellidae
"Costoanachis sp." = Anachis (Costoanachis), Strombina (Strombina) sp., Strombinella sp., Sincola (Dorsina) sp.
"Costoanachis sp." = Anachis (Costoanachis) Sacco 1890 snail
Strombina (Strombina) sp. Mörch 1858 snail
Strombinella sp. Dall 1896 snail
Sincola (Dorsina) sp. Jung 1989 snail
 Neogastropoda - Nassariidae
Nassarius sp.
Nassarius sp. Duméril 1806 snail
sensu lato
 Neogastropoda - Buccinidae
Solenosteira sp., Strombinophos sp., Nicema sp., Cymatophos sp.
Solenosteira sp. Dall 1890 true whelk
Strombinophos sp. Pilsbry and Olsson 1941 true whelk
Nicema sp. Woodring 1964 true whelk
Cymatophos sp. Pilsbry and Olsson 1941 true whelk
 Neogastropoda - Cancellariidae
Cancellaria anomoia2, Euclia dinota1, Narona barystoma2
Cancellaria anomoia2 Woodring 1970 snail
Euclia dinota1 Woodring 1970 snail
Narona barystoma2 Woodring 1970 snail
 Neogastropoda - Mitridae
Subcancilla sp.
Subcancilla sp. Olsson and Harbison 1953 mitre shell
 Neogastropoda - Drilliidae
Agladrillia (Agladrillia) sp., Agladrillia (Eumetadrillia) sp.
Agladrillia (Agladrillia) sp. Woodring 1928 snail
Agladrillia (Eumetadrillia) sp. Woodring 1928 snail
 Neogastropoda - Mangeliidae
Ithycythara sp., Kurtziella (Kurtziella) sp.
Ithycythara sp. Woodring 1928 snail
 Neogastropoda - Terebridae
Strioterebrum sp., Hastula sp.
Strioterebrum sp. Sacco 1891 auger snail
Hastula sp. Adams and Adams 1853 auger snail
 Neogastropoda - Turridae
Polystira sp.
Polystira sp. Woodring 1928 turrid
 Neogastropoda - Olividae
Olivella (Niteoliva) sp., Oliva (Oliva) sp.
Olivella (Niteoliva) sp. Olsson 1956 olive snail
Oliva (Oliva) sp. Bruguière 1789 olive snail
 Neogastropoda - Muricidae
Eupleura sp.
Eupleura sp. Adams and Adams 1853 murex snail
 Neogastropoda - Cystiscidae
Persicula sp.
Persicula sp. Schumacher 1817 snail
 Sorbeoconcha - Cypraeidae
Siphocypraea sp.
Siphocypraea sp. Heilprin 1897 cowry
 Sorbeoconcha - Vermetidae
Petaloconchus sp.
Petaloconchus sp. Lea 1843 worm shell
 Vanikoroidea - Eulimidae
Eulimidae indet., Niso sp.
Eulimidae indet. Philippi 1853 snail
Niso sp. Risso 1826 snail
Bivalvia
 Nuculida - Nuculidae
Nucula sp.
Nucula sp. Lamarck 1799 nut clam
 Mytilida - Crenellidae
Crenella sp.
Crenella sp. Brown 1827 clam
 Pectinida - Pectinoidae
Leptopecten sp., Argopecten sp.
Leptopecten sp. Verrill 1897 scallop
Argopecten sp. Monterosato 1889 calico scallop
 Pectinida - Anomiidae
Anomia sp.
Anomia sp. Linnaeus 1758 jingle
 Pectinida - Propeamussiidae
Cyclopecten sp.
Cyclopecten sp. Verrill 1897 mud scallop
 Arcida - Arcidae
Anadara (Rasia) sp., Anadara (Potiarca) sp.
Anadara (Rasia) sp. Gray 1857 ark
Anadara (Potiarca) sp. Iredale 1939 ark
 Arcida - Glycymerididae
Tucetona sp.
Tucetona sp. Iredale 1939 clam
 Cardiida - Cardiidae
Trigoniocardia sp.
Trigoniocardia sp. Dall 1900 cockle
sensu lato
 Cardiida - Semelidae
Ervilia sp.
Ervilia sp. Turton 1822 clam
 Cardiida - Tellinidae
"Eurytellina sp." = Tellina (Eurytellina)
"Eurytellina sp." = Tellina (Eurytellina) Fischer 1887 tellin clam
 Cardiida - Chamidae
Chama sp.
Chama sp. Linnaeus 1758 jewel box
 Cardiida - Veneridae
Lirophora sp., Chionopsis sp., Clementia sp., Macrocallista (Megapitaria) sp.
Lirophora sp. Conrad 1863 venus clam
Chionopsis sp. Olsson 1932 venus clam
Clementia sp. Gray 1847 venus clam
Macrocallista (Megapitaria) sp. Grant and Gale 1931 venus clam
 Cardiida - Mactridae
Mulinia sp.
Mulinia sp. Gray 1837 clam
 Pholadida - Corbulidae
Caryocorbula sp., "Bothrocorbula (Hexacorbula) sp." = Hexacorbula
Caryocorbula sp. Gardner 1926 clam
"Bothrocorbula (Hexacorbula) sp." = Hexacorbula Olsson 1932 clam
 Lucinida - Lucinidae
Divaricella sp.
Divaricella sp. Martens 1880 clam
 Carditida - Crassatellidae
Eucrassatella (Eucrassatella) sp., Crassinella sp.
Crassinella sp. Guppy 1874 clam
1Jung 1989; 2Landau et al. 2012