Where: Trinidad and Tobago (10.6° N, 61.1° W: paleocoordinates 10.5° N, 59.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Melajo Clay Member (Springvale Formation), Late/Upper Miocene (11.6 - 5.3 Ma)
• The Melajo Clay Member of the Springvale Formation is correlated with the Savaneta Glaconitic Sandstone Member of the Springvale Formation, although part of it may be younger. The Melajo fauna is late Miocene in age. The Melajo Clay rests transgressively on the phyllites of the Northern Range with a basal conglomerate of about 1 m thickness. The conglomerate graes into a 1.5 m thick limestone, which is overlain by a bed of sand of about 1 m thickness. Above the sand is the Melajo Clay. The total thickness of the Melajo Clay is about 200 ft. It is unconformably overlain by Pleistocene sand and gravel deposits.
• bed-level stratigraphic resolution
Environment/lithology: offshore; unlithified, yellow, blue, silty claystone and unlithified, coarse-grained sandstone
Size class: macrofossils
Reposited in the PRI, USNM
Collection methods: quarrying,
• All material descibed in this report is reposited in the Naturhistorisches Mueum, Basel, or the USNM. Additional material collection from this unit is found at PRI.
Primary reference: P. Jung. 1969. Miocene and Pliocene mollusks from Trinidad. Bulletins of American Paleontology 55(247):293-697 [A. Miller/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 60632: authorized by Austin Hendy, entered by Austin Hendy on 19.05.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium (Dentalium) divulgatum tusk shell | |
Bivalvia | |
Crassinella guppyi Dall 1896 clam | |
| |
"Eurytellina melajoensis" = Tellina (Eurytellina), "? Eurytellina oligoscissulata" = Tellina (Eurytellina), "Moerella (Moerella) elinguis" = Tellina (Moerella)
"Eurytellina melajoensis" = Tellina (Eurytellina) tellin clam
"? Eurytellina oligoscissulata" = Tellina (Eurytellina) tellin clam
"Moerella (Moerella) elinguis" = Tellina (Moerella) tellin clam | |
Pitar (Lamelliconcha) circinatus venus clam
Dosinia (Dosinia) sp. Scopoli 1777 venus clam | |
Caryocorbula (Caryocorbula) sp. Gardner 1926 clam | |
"Anadara (Scapharca) placata" = Scapharca, Anadara (Anadara) inaequilateralis
"Anadara (Scapharca) placata" = Scapharca clam
Anadara (Anadara) inaequilateralis Maury 1917 ark | |
Noetia (Eontia) centrota Guppy 1867 clam | |
Anomia simplex d'Orbigny 1845 jingle | |
"Adrana perprotracta" = Adrana newcombi, "Nuculana (Saccella) ludificans" = Saccella
"Adrana perprotracta" = Adrana newcombi Angas 1878 pointed nut clam
"Nuculana (Saccella) ludificans" = Saccella pointed nut clam | |
Gastropoda | |
"Calliostoma olssoni" = Calliostoma (Elmerlinia) olssoni
"Calliostoma olssoni" = Calliostoma (Elmerlinia) olssoni Maury 1925 top snail | |
Solariorbis marginatus snail | |
Cylichnella altera snail
Acteocina canaliculata Say 1826 barrel-bubble | |
Eulimella (Eulimella) "sp. A", Eulimella (Ebalina) mitis, Turbonilla "sp. A", Turbonilla "sp. B", Turbonilla "sp. D"
Eulimella (Eulimella) "sp. A" Forbes and MacAndrew 1846 snail
Turbonilla "sp. A" Risso 1826 snail
Turbonilla "sp. B" Risso 1826 snail
Turbonilla "sp. D" Risso 1826 snail | |
Turritella (Broderiptella) planigyrata Guppy 1867 turret shell | |
Epitonium (Epitonium) aff. foliaceicostatum wentletrap
Epitonium (Asperiscala) rohri wentletrap | |
Anachis (Costoanachis) fraudans, "Anachis (Costoanachis) obesa" = Parvanachis obesa, "Strombina (Sincola) crassilabrum" = Sincola (Sincola) crassilabrum
"Anachis (Costoanachis) obesa" = Parvanachis obesa Adams 1845 snail
"Strombina (Sincola) crassilabrum" = Sincola (Sincola) crassilabrum Guppy 1874 snail | |
Nassarius (Uzita) trinitatensis Jung 1969 snail | |
Ithycythara hilaris snail | |
Agladrillia lassula snail | |
"Olivella (Dactylidia) aff. mutica" = Olivella mutica, Olivella (Minioliva) fundarugata
"Olivella (Dactylidia) aff. mutica" = Olivella mutica Say 1822 olive snail
Olivella (Minioliva) fundarugata olive snail | |
Calotrophon hutchisoni murex snail | |
Cyclostremiscus (Ponocyclus) pentagonus Gabb 1873 snail | |
"Natica (Naticarius) aff. canrena" = Naticarius canrena, Polinices stanislasmeunieri
"Natica (Naticarius) aff. canrena" = Naticarius canrena Linnaeus 1758 moon snail
Polinices stanislasmeunieri Maury 1917 moon snail | |
Crepidula plana Say 1822 slipper shell
Calyptraea centralis Conrad 1841 slipper shell | |
"Neritina (Vitta) cf. olssoni" = Vitta
"Neritina (Vitta) cf. olssoni" = Vitta snail |