Where: Trinidad and Tobago (10.6° N, 61.1° W)
• Paleocoordinates: 10.8° N, 58.5° W (Wright 2013)
• 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 | |
Crepidula plana Say 1822 slipper shell | |
Springvaleia leroyi turret shell
Turritella (Broderiptella) plaigyrata turret shell | |
Balcis egregia snail | |
| |
Cymatium sp. Röding 1798 triton shell | |
"Bursa (Bursa) aff. thomae" = Bursa rhodostoma
"Bursa (Bursa) aff. thomae" = Bursa rhodostoma Sowerby 1835 frog shell | |
Nassarius (Uzita) "sp. A" Adams and Adams 1853 snail
Gordanops baranoanus Anderson 1929 snail | |
Latirus (Polygona) cf. infundibulum Gmelin 1791 snail
Fusinus sp. Rafinesque 1815 snail | |
"Strombina ? melajoensis" = Sincola (Dorsina) melajoensis, Parametaria prototyphus
"Strombina ? melajoensis" = Sincola (Dorsina) melajoensis Jung 1969 snail
Parametaria prototyphus snail | |
Hanetia semiglobosa true whelk
Cantharus ? sp. Röding 1798 true whelk | |
Oliva (Oliva) couvana Maury 1925 olive snail | |
"Ancilla (Eburna) caroniana" = Eburna caroniana
"Ancilla (Eburna) caroniana" = Eburna caroniana Maury 1925 snail | |
"Cancellaria (Euclia) montserratensis" = Euclia montserratensis, Cancellaria cf. sanctifrancisci, "Trigonostoma (Emmonsella) sp." = Ventrilia, "Cancellaria (Charcolleria) sp." = Massyla
"Cancellaria (Euclia) montserratensis" = Euclia montserratensis Maury 1925 snail
"Trigonostoma (Emmonsella) sp." = Ventrilia Jousseaume 1887 snail
"Cancellaria (Charcolleria) sp." = Massyla Adams and Adams 1854 snail | |
Strioterebrum cf. gatunense auger snail | |
Conus couvaensis, "Conus springvalensis" = Conus imitator springvalensis
Conus couvaensis Vokes 1938 cone shell
"Conus springvalensis" = Conus imitator springvalensis Mansfield 1925 cone 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 | |
Prunum (Egouena) calypsonis Maury 1925 margin shell
Prunum (Egouena) springvalensis Maury 1925 margin shell
Volvarina "sp. A" Hinds 1844 margin shell | |
"Persicula (Rabicea) couviana" = Persicula propeobesa
"Persicula (Rabicea) couviana" = Persicula propeobesa Mansfield 1925 snail | |
Polinices stanislasmeunieri, "Natica (Naticarius) canrena" = Naticarius canrena, "Natica (Naticarius) aff. canrena" = Naticarius canrena
Polinices stanislasmeunieri Maury 1917 moon snail
"Natica (Naticarius) canrena" = Naticarius canrena Linnaeus 1758 moon snail
"Natica (Naticarius) aff. canrena" = Naticarius canrena Linnaeus 1758 moon snail | |
"Calliostoma caronianum" = Calliostoma (Calliostoma) caronianum
"Calliostoma caronianum" = Calliostoma (Calliostoma) caronianum Maury 1925 top snail | |
"Architectonica (Architectonica) nobilis" = Architectonica nobilis
"Architectonica (Architectonica) nobilis" = Architectonica nobilis Röding 1798 sundial Subspecies: A. (A.) nobilis nobilis
| |
Bivalvia | |
"Eucrassatella trinitaria" = Eucrassatella (Hybolophus) trinitaria
"Eucrassatella trinitaria" = Eucrassatella (Hybolophus) trinitaria Maury 1925 clam | |
"Notocorbula islatrinitatis" = Varicorbula islatrinitatis, Caryocorbula (Caryocorbula) helanae
"Notocorbula islatrinitatis" = Varicorbula islatrinitatis Maury 1925 clam | |
"Eurytellina melajoensis" = Tellina (Eurytellina), "Apolymetis trinitaria" = Florimetis trinitaria, Macoma (Psammacoma) "sp. A"
"Eurytellina melajoensis" = Tellina (Eurytellina) tellin clam
"Apolymetis trinitaria" = Florimetis trinitaria Dall 1900 tellin clam
Macoma (Psammacoma) "sp. A" Dall 1900 tellin clam | |
"Trigoniocardia (Trigoniocardia) melajoensis" = Trigoniocardia (Goniacardia) melajoensis, Trigoniocardia (Trigoniocardia) maturensis
"Trigoniocardia (Trigoniocardia) melajoensis" = Trigoniocardia (Goniacardia) melajoensis Jung 1969 cockle | |
"Chione (Lirophora) caroniana" = Lirophora, "Dosinia (Dosinia) grandis" = Dosinia ponderosa, Macrocallista maculata, Pleiorytis caroniana
"Chione (Lirophora) caroniana" = Lirophora venus clam
"Dosinia (Dosinia) grandis" = Dosinia ponderosa Gray 1838 venus clam
Macrocallista maculata Linnaeus 1758 venus clam
Pleiorytis caroniana Maury 1925 venus clam | |
Anomia simplex d'Orbigny 1845 jingle | |
Pecten (Pecten) archon, "Aequipecten (Plagioctenium) demiurgus" = Argopecten demiurgus
Pecten (Pecten) archon scallop
"Aequipecten (Plagioctenium) demiurgus" = Argopecten demiurgus Dall 1898 calico scallop | |
Anadara (Anadara) inaequilateralis, "Anadara (Scapharca) placata" = Scapharca
Anadara (Anadara) inaequilateralis Maury 1917 ark
"Anadara (Scapharca) placata" = Scapharca clam | |
"Adrana perprotracta" = Adrana newcombi
"Adrana perprotracta" = Adrana newcombi Angas 1878 pointed nut clam | |
Scaphopoda | |
Dentalium (Dentalium) divulgatum tusk shell |