Where: Sindh, Pakistan (25.2° N, 68.5° E: paleocoordinates 8.8° S, 57.7° E)
• coordinate estimated from map
• hand sample-level geographic resolution
When: Sohnari Formation (Ranikot Group), Paleocene (66.0 - 56.0 Ma)
Environment/lithology: marine; shale and sandstone
Size class: microfossils
Preservation: original sporopollenin
Collected by GPS and USGS
Collection methods: core
• Investigation by the Geological Survey of Pakistan (GPS) and the U.S. Geological Survey (USGS).
•
•"The samples were processed using normal palynological techniques of HCl; HF; HNO3; short centrifugation with soapy water to remove fines; heavy liquid separation using a ZnCl2 liquid of 1.8 s.g.; staining with Bismarck brown; and screening on 10 µm sieves. Thes residues were mounted in glycerine jelly."
Primary reference: N. Frederiksen. 1990. Palynological contribution to geologic mapping of coal-bearing upper Paleocene rocks in the lower Indus coal region, Pakistan. Open-File Report 90-243:43more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 237201: authorized by Phillip Jardine, entered by Hannah Morck on 26.11.2024
Creative Commons license: CC BY (attribution)
Taxonomic list
Angiospermae | |
| |
unclassified | |
Angiospermae | |
Tricolporipites tiliaceaeformis | |
aff. Tricolporipites tiliaceaeformis Biswas 1962 | |
Retistephanocolpites | |
Retistephanocolpites "4-colpate", Retistephanocolpites "6-colpate", Retistephanocolpites "5-colpate", Retistephanocolpites "8-colpate", Retistephanocolpites "9-colpate"
Retistephanocolpites "4-colpate" Leidelmeyer 1966
Retistephanocolpites "6-colpate" Leidelmeyer 1966
Retistephanocolpites "5-colpate" Leidelmeyer 1966
Retistephanocolpites "8-colpate" Leidelmeyer 1966
Retistephanocolpites "9-colpate" Leidelmeyer 1966 | |
Intrareticulitis brevis | |
Intrareticulitis brevis Kar 1985 | |
Angiospermae | |
Cricotriporites "sp. A" Leidelmeyer 1966 dogbane | |
Triporopollenites "sp. A" Pflug and Thomson 1953 | |
Triatriopollenites "sp. A" Thomson and Pflug 1953 | |
Longapertites "sp. B - punctate" van Hoeken-Klinkenberg 1964 palm | |
Proxapertites operculatus Van der Hammen 1956 | |
Psilodiporites hammenii | |
Psilodiporites hammenii Varma and Rawat 1963 |