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 60399: authorized by Austin Hendy, entered by Austin Hendy on 14.05.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium (Dentalium) divulgatum tusk shell | |
Gastropoda | |
Rictaxis sp. Dall 1871 snail | |
"Calliostoma olssoni" = Calliostoma (Elmerlinia) olssoni
"Calliostoma olssoni" = Calliostoma (Elmerlinia) olssoni Maury 1925 top snail | |
Epitonium (Asperiscala) rohri wentletrap
Epitonium (Epitonium) aff. foliaceicostatum wentletrap | |
Niso grandis snail | |
Cerithium harrisi cerith snail | |
Turritella (Broderiptella) aff. mimetes, Turritella (Broderiptella) planigyrata, Turritella (Broderiptella) bifastigata
Turritella (Broderiptella) aff. mimetes Brown and Pilsbry 1911 turret shell
Turritella (Broderiptella) planigyrata Guppy 1867 turret shell
Turritella (Broderiptella) bifastigata Nelson 1870 turret shell Subspecies: T. (B.) bifastigata cartagenensis
| |
? Calotrophon hutchisoni murex snail
Eupleura lehneri Jung 1969 murex snail | |
Polystira "sp. B" Woodring 1928 turrid | |
Ithycythara hilaris snail | |
Nassarius (Uzita) trinitatensis Jung 1969 snail | |
"Anachis (Costoanachis) obesa" = Parvanachis obesa, "Strombina (Sincola) crassilabrum" = Sincola (Sincola) crassilabrum1
"Anachis (Costoanachis) obesa" = Parvanachis obesa Adams 1845 snail | |
Strombinophos perdoctus true whelk | |
Olivella (Minioliva) fundarugata olive snail | |
Polinices stanislasmeunieri, "Natica (Naticarius) aff. canrena" = Naticarius canrena
Polinices stanislasmeunieri Maury 1917 moon snail
"Natica (Naticarius) aff. canrena" = Naticarius canrena Linnaeus 1758 moon snail | |
Cyclostremiscus (Ponocyclus) pentagonus Gabb 1873 snail | |
Caecum "sp. A" Fleming 1813 snail
Caecum "sp. B" Fleming 1813 snail
Caecum "sp. C" Fleming 1813 snail | |
Carinodrillia meraca snail
Miraclathurella ralla snail | |
Calyptraea centralis Conrad 1841 slipper shell
Crepidula plana Say 1822 slipper shell | |
Cylichnella altera snail
Acteocina canaliculata Say 1826 barrel-bubble | |
Bivalvia | |
"Notocorbula sp." = Corbula (Notocorbula), Caryocorbula (Caryocorbula) helenae, Caryocorbula (Caryocorbula) sp.
"Notocorbula sp." = Corbula (Notocorbula) Iredale 1930 clam
Caryocorbula (Caryocorbula) sp. Gardner 1926 clam | |
Trigoniocardia (Trigoniocardia) maturensis, "Trachycardium (Dallocardia) sanctidavidis" = Dallocardia
"Trachycardium (Dallocardia) sanctidavidis" = Dallocardia cockle | |
"Moerella (Moerella) elinguis" = Tellina (Moerella), "Eurytellina melajoensis" = Tellina (Eurytellina), "? Eurytellina oligoscissulata" = Tellina (Eurytellina), Tellidora sp., Merisca trinidadensis, Temnoconcha aff. brasiliana
"Moerella (Moerella) elinguis" = Tellina (Moerella) tellin clam
"Eurytellina melajoensis" = Tellina (Eurytellina) tellin clam
"? Eurytellina oligoscissulata" = Tellina (Eurytellina) tellin clam
Tellidora sp. Morch 1856 tellin clam
Merisca trinidadensis tellin clam
Temnoconcha aff. brasiliana tellin clam | |
Semele aff. anteriocosta Vokes 1938 clam | |
"Chione (Lirophora) caroniana" = Lirophora, Dosinia (Dosinia) sp., "Dosinia (Dosinia) grandis" = Dosinia ponderosa, Pitar (Lamelliconcha) circinatus, Pitar (Lamelliconcha) labreanus
"Chione (Lirophora) caroniana" = Lirophora venus clam
Dosinia (Dosinia) sp. Scopoli 1777 venus clam
"Dosinia (Dosinia) grandis" = Dosinia ponderosa Gray 1838 venus clam
Pitar (Lamelliconcha) circinatus venus clam
Pitar (Lamelliconcha) labreanus venus clam | |
Crassinella guppyi Dall 1896 clam | |
"Anadara (Scapharca) placata" = Scapharca, Anadara (Anadara) inaequilateralis
"Anadara (Scapharca) placata" = Scapharca clam
Anadara (Anadara) inaequilateralis Maury 1917 ark | |
Noetia (Noetia) sheldoniana Maury 1912 clam
Noetia (Eontia) centrota Guppy 1867 clam | |
Anomia simplex d'Orbigny 1845 jingle | |
"Aequipecten (Plagioctenium) cf. maturensis" = Argopecten
"Aequipecten (Plagioctenium) cf. maturensis" = Argopecten calico scallop | |
Calorhadia (Calorhadia) solivaga, "Adrana perprotracta" = Adrana newcombi, "Nuculana (Saccella) ludificans" = Saccella
Calorhadia (Calorhadia) solivaga pointed nut clam
"Adrana perprotracta" = Adrana newcombi Angas 1878 pointed nut clam
"Nuculana (Saccella) ludificans" = Saccella pointed nut clam |