Patcham Formation
| Patcham Formation | |
|---|---|
| Stratigraphic range: Bathonian ~ | |
| Type | Geological formation |
| Lithology | |
| Primary | Limestone |
| Other | Marl |
| Location | |
| Coordinates | 23°30′N 70°30′E / 23.5°N 70.5°E |
| Approximate paleocoordinates | 23°24′S 33°18′E / 23.4°S 33.3°E |
| Region | Gujarat, Kachchh |
| Country | India |
| Extent | Patcham Island |
| Type section | |
| Named for | Patcham Island |
  Patcham Formation (India) | |
The Patcham Formation or Pachchham Formation is a Bathonian geologic formation of Patcham Island, Kutch district, Gujarat, India. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1]
Fossil content
[edit]Color key
|
Notes Uncertain or tentative taxa are in small text; |
Fish
[edit]Cartilaginous Fish
[edit]| Cartilaginous Fish of the Patcham Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
| Strophodus[2] | S. atlasensis | Kachchh | Bathonian | Teeth | A durophagous acrodontid hybodont | |
Echinoderms
[edit]| Echinoderms of the Patcham Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Image |
| Krohcoma[3] | K. ampla | Kachchh | Bathonian | A ophiacanthid brittle star | ||
| Ophiolimna[3] | O. malagasica | Kachchh | Bathonian | A ophiacanthid brittle star | ||
See also
[edit]References
[edit]- ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ↑ Bhosale, Suraj; Rakshit, Nibedita; Natarajan, Abhishek; Chauhan, Gaurav; Thakkar, Mahesh (2025-03-04). "The oldest Gondwanan record of durophagous shark Strophodus Agassiz, 1838 (Hybodontiformes) from the Kachchh Basin, western India". Historical Biology. 37 (3): 650–662. doi:10.1080/08912963.2024.2324430. ISSN 0891-2963.
- 1 2 Ben Thuy (2013). "Temporary expansion to shelf depths rather than an onshore-offshore trend: the shallow-water rise and demise of the modern deep-sea brittle star family Ophiacanthidae (Echinodermata: Ophiuroidea)". European Journal of Taxonomy (48): 1–242. doi:10.5852/ejt.2013.48.
Bibliography
[edit]- D. K. Srivastava, D. K. Pandey, A. Alberti and F. T. Fürsich. 2010. Record of Advenaster Hess, 1955 (Asteroidea) from the Bathonian Patcham Formation of Kala Jhar in Habo Dome, Kachchh Basin, India. Journal of the Palaeontological Society of India 55(1):65-69
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
{{citation}}: CS1 maint: publisher location (link)* S. K. Jana and S. S. Das. 2002. A report of a 157.8 m.y.-old dinosaur bone from the Jurassic marine Chari Formation, Kutch, Gujarat and its taphonomic significance. Current Science 82(1):85-88 - D. Mukherjee, S. Bardhan, and D. Ghosh. 2002. Significance of new species of Cryptorhynchia (Brachiopoda) from the Middle Jurassic of Kutch, India. Alcheringa 26:209-231
- D. Mehl and F. T. Fürsich. 1997. Middle Jurassic Porifera from Kachchh, western India. Paläontologische Zeitschrift 71:19-33
- F. T. Fürsich, D. K. Pandey, W. Oschmann, A.K. Jaitly, and I.B. Singh. 1994. Ecology and adaptive strategies of corals in unfavourable environments: Examples from the Middle Jurassic of the Kachchh Basin, western India. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 194(2–3):269-303