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 60408: authorized by Austin Hendy, entered by Austin Hendy on 14.05.2006
Creative Commons license: CC0 (CC0)
Taxonomic list
Bivalvia | |
Barbatia sp. Gray 1842 clam | |
Pecten (Pecten) archon, "Aequipecten (Plagioctenium) demiurgus" = Argopecten demiurgus
Pecten (Pecten) archon scallop
"Aequipecten (Plagioctenium) demiurgus" = Argopecten demiurgus Dall 1898 calico scallop | |
"Eucrassatella trinitaria" = Eucrassatella (Hybolophus) trinitaria
"Eucrassatella trinitaria" = Eucrassatella (Hybolophus) trinitaria Maury 1925 clam | |
"Notocorbula islatrinitatis" = Varicorbula islatrinitatis, Caryocorbula (Caryocorbula) helenae
"Notocorbula islatrinitatis" = Varicorbula islatrinitatis Maury 1925 clam | |
"Trachycardium (Dallocardia) sanctidavidis" = Dallocardia, "Trigoniocardia (Trigoniocardia) melajoensis" = Trigoniocardia (Goniacardia) melajoensis
"Trachycardium (Dallocardia) sanctidavidis" = Dallocardia cockle
"Trigoniocardia (Trigoniocardia) melajoensis" = Trigoniocardia (Goniacardia) melajoensis Jung 1969 cockle | |
"Apolymetis trinitaria" = Florimetis trinitaria, Macoma (Psammacoma) "sp. A"
"Apolymetis trinitaria" = Florimetis trinitaria Dall 1900 tellin clam
Macoma (Psammacoma) "sp. A" Dall 1900 tellin clam | |
Semele aff. anteriocosta Vokes 1938 clam | |
Macrocallista maculata, "Chione (Lirophora) caroniana" = Lirophora
Macrocallista maculata Linnaeus 1758 venus clam
"Chione (Lirophora) caroniana" = Lirophora venus clam | |
Gastropoda | |
Mathilda "sp. A" Semper 1865 snail | |
Turbonilla riosecana snail | |
Turritella (Broderiptella) planigyrata Guppy 1867 turret shell | |
Balcis egregia snail | |
| |
Nassarius (Uzita) "sp. A" Adams and Adams 1853 snail
Pallacera "sp. A" Woodring 1964 snail | |
Fusinus sp. Rafinesque 1815 snail | |
Hanetia semiglobosa true whelk
Colubraria sp. Schumacher 1817 true whelk | |
"Murex (Murex) chrysostoma" = Vokesimurex chrysostoma, "Thais (Stramonita) "sp. A"" = Stramonita
"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 | |
Jaspidella sanctidominici Maury 1917 olive snail
Oliva (Oliva) couvana Maury 1925 olive snail | |
"Ancilla (Euburna) caroniana" = Eburna caroniana
"Ancilla (Euburna) caroniana" = Eburna caroniana 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 | |
Conomitra sp. Conrad 1865 ribbed mitre | |
"Natica (Naticarius) canrena" = Naticarius canrena
"Natica (Naticarius) canrena" = Naticarius canrena Linnaeus 1758 moon snail | |
Calyptraea centralis Conrad 1841 slipper shell | |
"Calliostoma decipiens" = Calliostoma (Calliostoma) decipiens
"Calliostoma decipiens" = Calliostoma (Calliostoma) decipiens Guppy 1867 top snail |