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. Collection is derived from the basal limestone
• bed-level stratigraphic resolution
Environment/lithology: shallow subtidal; poorly lithified, shelly/skeletal, conglomeratic limestone
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 60637: authorized by Austin Hendy, entered by Austin Hendy on 19.05.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
"Calliostoma caronianum" = Calliostoma (Calliostoma) caronianum
"Calliostoma caronianum" = Calliostoma (Calliostoma) caronianum Maury 1925 top snail | |
"Natica (Naticarius) canrena" = Naticarius canrena, "Natica (Naticarius) aff. canrena" = Naticarius canrena, Polinices stanislasmeunieri
"Natica (Naticarius) canrena" = Naticarius canrena Linnaeus 1758 moon snail
"Natica (Naticarius) aff. canrena" = Naticarius canrena Linnaeus 1758 moon snail
Polinices stanislasmeunieri Maury 1917 moon snail | |
"Ancilla (Eburna) caroniana" = Eburna caroniana
"Ancilla (Eburna) caroniana" = Eburna caroniana Maury 1925 snail | |
Oliva (Oliva) couvana Maury 1925 olive snail | |
"Persicula (Rabicea) couviana" = Persicula propeobesa
"Persicula (Rabicea) couviana" = Persicula propeobesa Mansfield 1925 snail | |
Prunum (Egouena) calypsonis Maury 1925 margin shell
Prunum (Egouena) springvalensis Maury 1925 margin shell
Volvarina "sp. A" Hinds 1844 margin shell | |
Chicoreus (Triplex) cornurectus, "Murex (Phyllonotus) cf. pomum" = Chicoreus (Phyllonotus) pomum, "Murex (Murex) chrysostoma" = Vokesimurex chrysostoma, "Thais (Stramonita) "sp. A"" = Stramonita
Chicoreus (Triplex) cornurectus Guppy 1876 murex snail
"Murex (Phyllonotus) cf. pomum" = Chicoreus (Phyllonotus) pomum Gmelin 1791 murex snail
"Murex (Murex) chrysostoma" = Vokesimurex chrysostoma Sowerby 1834 murex snail
"Thais (Stramonita) "sp. A"" = Stramonita Schumacher 1817 murex snail | |
"Trigonostoma (Emmonsella) sp." = Ventrilia, Cancellaria cf. sanctifrancisci, "Cancellaria (Charcolleria) sp." = Massyla, "Cancellaria (Euclia) montserratensis" = Euclia montserratensis
"Trigonostoma (Emmonsella) sp." = Ventrilia Jousseaume 1887 snail
"Cancellaria (Charcolleria) sp." = Massyla Adams and Adams 1854 snail
"Cancellaria (Euclia) montserratensis" = Euclia montserratensis Maury 1925 snail | |
"Conus springvalensis" = Conus imitator springvalensis, Conus couvaensis
"Conus springvalensis" = Conus imitator springvalensis Mansfield 1925 cone shell
Conus couvaensis Vokes 1938 cone shell | |
Strioterebrum cf. gatunense auger snail | |
"Strombina ? melajoensis" = Sincola (Dorsina) melajoensis, Parametaria prototyphus
"Strombina ? melajoensis" = Sincola (Dorsina) melajoensis Jung 1969 snail
Parametaria prototyphus snail | |
Nassarius (Uzita) "sp. A" Adams and Adams 1853 snail
Gordanops baranoanus Anderson 1929 snail | |
Cantharus ? sp. Röding 1798 true whelk
Hanetia semiglobosa true whelk | |
Latirus (Polygona) cf. infundibulum Gmelin 1791 snail
Fusinus sp. Rafinesque 1815 snail | |
Cymatium sp. Röding 1798 triton shell | |
"Bursa (Bursa) aff. thomae" = Bursa rhodostoma
"Bursa (Bursa) aff. thomae" = Bursa rhodostoma Sowerby 1835 frog shell | |
| |
Crepidula plana Say 1822 slipper shell | |
Balcis egregia snail | |
Turritella (Broderiptella) plaigyrata turret shell
Springvaleia leroyi turret shell | |
"Architectonica (Architectonica) nobilis" = Architectonica nobilis
"Architectonica (Architectonica) nobilis" = Architectonica nobilis Röding 1798 sundial Subspecies: A. (A.) nobilis nobilis
| |
Scaphopoda | |
Dentalium (Dentalium) divulgatum tusk shell | |
Bivalvia | |
"Adrana perprotracta" = Adrana newcombi
"Adrana perprotracta" = Adrana newcombi Angas 1878 pointed nut clam | |
Anomia simplex d'Orbigny 1845 jingle | |
"Aequipecten (Plagioctenium) demiurgus" = Argopecten demiurgus, Pecten (Pecten) archon
"Aequipecten (Plagioctenium) demiurgus" = Argopecten demiurgus Dall 1898 calico scallop
Pecten (Pecten) archon scallop | |
Anadara (Anadara) inaequilateralis, "Anadara (Scapharca) placata" = Scapharca
Anadara (Anadara) inaequilateralis Maury 1917 ark
"Anadara (Scapharca) placata" = Scapharca clam | |
"Eucrassatella trinitaria" = Eucrassatella (Hybolophus) trinitaria
"Eucrassatella trinitaria" = Eucrassatella (Hybolophus) trinitaria Maury 1925 clam | |
"Trigoniocardia (Trigoniocardia) melajoensis" = Trigoniocardia (Goniacardia) melajoensis, Trigoniocardia (Trigoniocardia) maturensis
"Trigoniocardia (Trigoniocardia) melajoensis" = Trigoniocardia (Goniacardia) melajoensis Jung 1969 cockle | |
"Eurytellina melajoensis" = Tellina (Eurytellina), Macoma (Psammacoma) "sp. A", "Apolymetis trinitaria" = Florimetis trinitaria
"Eurytellina melajoensis" = Tellina (Eurytellina) tellin clam
Macoma (Psammacoma) "sp. A" Dall 1900 tellin clam
"Apolymetis trinitaria" = Florimetis trinitaria Dall 1900 tellin clam | |
Macrocallista maculata, "Chione (Lirophora) caroniana" = Lirophora, "Dosinia (Dosinia) grandis" = Dosinia ponderosa, Pleiorytis caroniana
Macrocallista maculata Linnaeus 1758 venus clam
"Chione (Lirophora) caroniana" = Lirophora venus clam
"Dosinia (Dosinia) grandis" = Dosinia ponderosa Gray 1838 venus clam
Pleiorytis caroniana Maury 1925 venus clam | |
"Notocorbula islatrinitatis" = Varicorbula islatrinitatis, Caryocorbula (Caryocorbula) helanae
"Notocorbula islatrinitatis" = Varicorbula islatrinitatis Maury 1925 clam |