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 60635: 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 | |
Semele aff. anteriocosta Vokes 1938 clam | |
Macoma (Psammacoma) "sp. A", "Eurytellina melajoensis" = Tellina (Eurytellina), "? Eurytellina oligoscissulata" = Tellina (Eurytellina), "Moerella (Moerella) elinguis" = Tellina (Moerella), Temnoconcha aff. brasiliana, Tellidora sp., Merisca trinidadensis
Macoma (Psammacoma) "sp. A" Dall 1900 tellin clam
"Eurytellina melajoensis" = Tellina (Eurytellina) tellin clam
"? Eurytellina oligoscissulata" = Tellina (Eurytellina) tellin clam
"Moerella (Moerella) elinguis" = Tellina (Moerella) tellin clam
Temnoconcha aff. brasiliana tellin clam
Tellidora sp. Morch 1856 tellin clam
Merisca trinidadensis tellin clam | |
Pitar (Lamelliconcha) circinatus, Pitar (Lamelliconcha) labeanus, Cyclinella sp., Dosinia (Dosinia) sp.
Pitar (Lamelliconcha) circinatus venus clam
Pitar (Lamelliconcha) labeanus venus clam
Cyclinella sp. Dall 1902 venus clam
Dosinia (Dosinia) sp. Scopoli 1777 venus clam | |
Caryocorbula (Caryocorbula) helenae, Caryocorbula (Caryocorbula) sp., Tenuicorbula melajoensis, "Notocorbula sp." = Corbula (Notocorbula)
Caryocorbula (Caryocorbula) sp. Gardner 1926 clam
Tenuicorbula melajoensis Jung 1969 clam
"Notocorbula sp." = Corbula (Notocorbula) Iredale 1930 clam | |
Anadara (Anadara) inaequilateralis Maury 1917 ark | |
Noetia (Noetia) sheldoniana Maury 1912 clam | |
Anomia simplex d'Orbigny 1845 jingle | |
"Aequipecten (Plagioctenium) cf. maturensis" = Argopecten
"Aequipecten (Plagioctenium) cf. maturensis" = Argopecten calico scallop | |
Ostrea sp. Linnaeus 1758 oyster | |
"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 | |
Cerithium harrisi cerith snail | |
Turritella (Broderiptella) planigyrata Guppy 1867 turret shell
Turritella (Broderiptella) aff. mimetes Brown and Pilsbry 1911 turret shell | |
Niso grandis snail
Eulima "sp. A" Risso 1826 snail | |
Anachis (Costoanachis) fraudans, "Anachis (Costoanachis) obesa" = Parvanachis obesa, "Strombina (Sincola) crassilabrum" = Sincola (Sincola) crassilabrum1, "Strombina ? melajoensis" = Sincola (Dorsina) melajoensis
"Anachis (Costoanachis) obesa" = Parvanachis obesa Adams 1845 snail
"Strombina ? melajoensis" = Sincola (Dorsina) melajoensis Jung 1969 snail | |
Nassarius (Uzita) trinitatensis Jung 1969 snail | |
Metaphos ? sp. Olsson 1964 true whelk
Metula aff. cancellata Gabb 1873 true whelk
Strombinophos perdoctus true whelk | |
"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
Eupleura lehneri Jung 1969 murex snail
Typhis sp. Montfort 1810 murex snail | |
Malea sp. Valenciennes 1833 tun shell | |
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 | |
Calyptraea centralis Conrad 1841 slipper shell | |
"Neritina (Vitta) cf. virginia" = Neritina virginea
"Neritina (Vitta) cf. virginia" = Neritina virginea Linnaeus 1758 snail |