Where: India (25.2° N, 90.7° E: paleocoordinates 18.4° N, 89.9° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Chengapara Formation, Middle Miocene (16.0 - 11.6 Ma)
• STRATIGRAPHIC RELATIONS: From Zone II of Chengapara Formation, which regionally conformably overlies the Baghmara Fm (presumanly Early Miocene) and is unconformably overlain by the Dupitila Fm. THICKNESS: Zone is 0.25 m in thickness, within a ~30 m thick section. AGE: Burdigalian-Helvetian, placed here in the Middle Miocene. STRATIGRAPHIC POSITION: From upper part of section, middle part of the Chengapara Fm.
• bed-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified, shelly/skeletal limestone
Size class: macrofossils
Collection methods: surface (in situ),
• COLLECTORS: Presumably the authors, B. C. Lyngdoh, R. P. Tiwari, and R. P. Kachhara. REPOSITORY: Paleontology Museum of the Department of Geology, Pachunga University College, North-Eastern Hill University, Mizoram, India.
Primary reference: B. C. Lyngdoh, R. P. Tiwari, and R. P. Kachhara. 1999. Miocene Molluscan biosratigraphy of the Garo Hills, Meghalaya, India. Journal of the Paleontological Society of India 44:55-67 [A. Hendy/A. Hendy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 72085: authorized by Austin Hendy, entered by Austin Hendy on 24.05.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Bivalvia | |
Bassina (Callanaitis) sp. Jukes-Brown 1914 venus clam | |
Tellina (Moerella) indifferens Noetling 1901 tellin clam | |
Arca sp. Linnaeus 1758 ark | |
Ostrea pseudorissensis Vredenburg 1928 oyster
Crassostrea gajensis oyster | |
"Placuna (Indoplacuna) "n. sp."" = Indoplacuna, Placuna (Indoplacuna) birmanica
"Placuna (Indoplacuna) "n. sp."" = Indoplacuna Vredenburg 1924 scallop
Placuna (Indoplacuna) birmanica Vredenburg 1924 scallop | |
Gastropoda | |
"Cypraea (Cypraeotrivia) oppenheimi" = Projenneria neumayri
"Cypraea (Cypraeotrivia) oppenheimi" = Projenneria neumayri Hilber 1879 snail | |
Xenophora birmanica carrier shell | |
Bathytoma cataphrata snail | |
Turris (Lophiotoma) quilonica Dey 1961 turrid
Clavatula (Perrona) birmanica Vredenburg 1921 turrid | |
Conus (Dendroconus) sp., Conus (Dendroconus) loroisii, Conus (Lithoconus) sp., Conus (Lithoconus) kyndiawoensis, Conus (Lithoconus) odengensis
Conus (Dendroconus) sp. Swainson 1840 cone shell
Conus (Dendroconus) loroisii Kiener 1845 cone shell
Conus (Lithoconus) sp. Mörch 1852 cone shell
Conus (Lithoconus) kyndiawoensis cone shell
Conus (Lithoconus) odengensis Martin 1895 cone shell | |
Duplicaria manguensis auger snail | |
"Clavalithes (Crytulus) seminudus" = Clavella (Clavilithes)
"Clavalithes (Crytulus) seminudus" = Clavella (Clavilithes) snail | |
Turbinella mikranica snail | |
Chondrichthyes | |
Carcharodon carcharias Linnaeus 1758 great white shark | |
Scoliodon sorrakowah requiem shark
Negaprion sp. Whitley 1940 lemon shark | |
Sphyrna diplana hammerhead shark |