Um Sohryngkew River, Tharia (Cretaceous of India)

Also known as Umsohryngkew, Wahrew River, Therriaghat

Where: Meghalaya, India (25.2° N, 91.8° E: paleocoordinates 36.6° S, 70.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Langpar Formation, Late/Upper Cretaceous (100.5 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; lithology not reported

Size class: microfossils

Primary reference: R. N. Lakhanpal, H. K. Maheshwari, and N. Awasthi. 1976. A Catalogue of Indian Fossil Plants. 1-318 [B. Allen/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 224615: authorized by Bethany Allen, entered by Bethany Allen on 24.03.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Dinophyceae
 Peridiniales - Peridiniaceae
Ascodinium cf. scabrosum
Ascodinium cf. scabrosum Cookson and Hughes 1964
 Gonyaulacales - Gonyaulacaceae
Achomosphaera sp., Achomosphaera operculata n. sp., Achomosphaera robusta n. sp., Achomosphaera globulata n. sp., Achomosphaera valianta n. sp., Achomosphaera delicata n. sp., Achomosphaera convexa n. sp., Achomosphaera cambra n. sp., Oligosphaeridium cephalum n. sp., Leptodinium ovum n. sp.
Achomosphaera sp. Evitt 1963
Achomosphaera operculata n. sp. Sah et al. 1970
Achomosphaera robusta n. sp. Sah et al. 1970
Achomosphaera globulata n. sp. Sah et al. 1970
Achomosphaera valianta n. sp. Sah et al. 1970
Achomosphaera delicata n. sp. Sah et al. 1970
Achomosphaera convexa n. sp. Sah et al. 1970
Achomosphaera cambra n. sp. Sah et al. 1970
Oligosphaeridium cephalum n. sp. Sah et al. 1970
Leptodinium ovum n. sp. Sah et al. 1970
 Gonyaulacales - Goniodomaceae
Hystrichosphaeridium sp., Hystrichosphaeridium assamicum n. sp., Hystrichosphaeridium transculentum n. sp., Hystrichosphaeridium robustum n. sp.
Hystrichosphaeridium sp. Deflandre 1936
Hystrichosphaeridium assamicum n. sp. Sah et al. 1970
Hystrichosphaeridium transculentum n. sp. Sah et al. 1970
Hystrichosphaeridium robustum n. sp. Sah et al. 1970
 Gonyaulacales - Areoligeraceae
Canningia sp.
Canningia sp. Cookson and Eisenack 1960
  -
Apteodinium sp.
Apteodinium sp. Eisenack 1958
 Dinoflagellata -
Polysphaeridium subtile
Polysphaeridium subtile Davey and Williams 1966
 Life -
Baltisphaeridium sp., Fromea acambra n. sp.
Baltisphaeridium sp. Eisenack 1958 acritarchs
Fromea acambra n. sp. Sah et al. 1970 acritarchs
Chlorophyceae
  -
cf. Pediastrum sp.
cf. Pediastrum sp. Meyen 1829
Polypodiopsida
 Schizaeales - Polypodiidae
Cicatricosisporites macrocostatus
Cicatricosisporites macrocostatus Baksi 1962
previously identified as "? Cicatricosisporites sp."
  - Dicksoniaceae
Dicksoniaceaesporites sp.
Birbalipites pseudodrimys
  -
Birbalipites pseudodrimys n. gen. n. sp.
Birbalipites pseudodrimys n. gen. n. sp. Biswas 1962
Monocolpopites
  -
Monocolpopites sp.
Monocolpopites sp. Biswas 1962
Angiospermae
 Nymphaeales - Nymphaeaceae
Nymphaeaceaepites rarispina n. sp.
Nymphaeaceaepites rarispina n. sp. Biswas 1962 water lily
 Alismatales - Alismataceae
Alismataceaepites rogalskae n. gen. n. sp.
Alismataceaepites rogalskae n. gen. n. sp. Biswas 1962
"Umsohryngkew River Section"
 Rosales - Rhamnaceae
Rhamneaepites minuta n. gen. n. sp.
Rhamneaepites minuta n. gen. n. sp. Biswas 1962 buckthorn
 Sapindales - Sapindaceae
Sapindaceaepites dubia n. gen. n. sp.
Sapindaceaepites dubia n. gen. n. sp. Biswas 1962 soapberry
 Coniferales -
Coniferaepites sp.