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 | |
Chondrichthyes | |
Negaprion sp. Whitley 1940 lemon shark
Scoliodon sorrakowah requiem shark | |
Sphyrna diplana hammerhead shark | |
Carcharodon carcharias Linnaeus 1758 great white shark | |
Gastropoda | |
"Cypraea (Cypraeotrivia) oppenheimi" = Projenneria neumayri
"Cypraea (Cypraeotrivia) oppenheimi" = Projenneria neumayri Hilber 1879 snail | |
Turbinella mikranica snail | |
"Clavalithes (Crytulus) seminudus" = Clavella (Clavilithes)
"Clavalithes (Crytulus) seminudus" = Clavella (Clavilithes) snail | |
Duplicaria manguensis auger snail | |
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 | |
Clavatula (Perrona) birmanica Vredenburg 1921 turrid
Turris (Lophiotoma) quilonica Dey 1961 turrid | |
Bathytoma cataphrata snail | |
Xenophora birmanica carrier shell | |
Bivalvia | |
Bassina (Callanaitis) sp. Jukes-Brown 1914 venus clam | |
Tellina (Moerella) indifferens Noetling 1901 tellin clam | |
"Placuna (Indoplacuna) "n. sp."" = Indoplacuna, Placuna (Indoplacuna) birmanica
"Placuna (Indoplacuna) "n. sp."" = Indoplacuna Vredenburg 1924 scallop
Placuna (Indoplacuna) birmanica Vredenburg 1924 scallop | |
Ostrea pseudorissensis Vredenburg 1928 oyster
Crassostrea gajensis oyster | |
Arca sp. Linnaeus 1758 ark |