Dinosaur Beds: Difference between revisions
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The '''Dinosaur Beds''' is a geological [[Formation (geology)|formation]] in Malawi whose strata date back to the [[Early Cretaceous]]. The age of the deposit is poorly constrained, but is likely to date from the [[Barremian]] to [[Aptian]].<ref>{{Cite journal|last=Widlansky|first=Sarah J.|last2=Clyde|first2=William C.|last3=O'Connor|first3=Patrick M.|last4=Roberts|first4=Eric M.|last5=Stevens|first5=Nancy J.|date=March 2018|title=Paleomagnetism of the Cretaceous Galula Formation and implications for vertebrate evolution|journal=Journal of African Earth Sciences|volume=139|pages=403–420|doi=10.1016/j.jafrearsci.2017.11.029|issn=1464-343X}}</ref> Dinosaurs, turtles and |
The '''Dinosaur Beds''' is a geological [[Formation (geology)|formation]] in Malawi whose strata date back to the [[Early Cretaceous]]. The age of the deposit is poorly constrained, but is likely to date from the [[Barremian]] to [[Aptian]].<ref>{{Cite journal|last=Widlansky|first=Sarah J.|last2=Clyde|first2=William C.|last3=O'Connor|first3=Patrick M.|last4=Roberts|first4=Eric M.|last5=Stevens|first5=Nancy J.|date=March 2018|title=Paleomagnetism of the Cretaceous Galula Formation and implications for vertebrate evolution|journal=Journal of African Earth Sciences|volume=139|pages=403–420|doi=10.1016/j.jafrearsci.2017.11.029|issn=1464-343X}}</ref> Dinosaurs, turtles and crocodylomorphs remains are among the fossils that have been recovered from the formation.<ref name="cretaceousdistribution">Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Africa)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 571-573. {{ISBN|0-520-24209-2}}.</ref> It is correlated with the [[Galula Formation]] in [[Tanzania]]. It consists of two members, a lower unfossiliferous member consisting of deep red stained sandstones, and an upper fossiliferous member consisting of white sands and grey to red mudstones and siltstones. The upper member is 210 m thick in the vicinity of the CD-9 locality.<ref>{{Cite journal|last=WINKLER|first=DALE A.|last2=GOMANI|first2=ELIZABETH M.|last3=JACOBS|first3=LOUIS L.|date=2000|title=COMPARATIVE TAPHONOMY OF AN EARLY CRETACEOUS SAUROPOD QUARRY, MALAWI, AFRICA|url=https://www.researchgate.net/publication/274082885|journal=Paleont. Soc. Korea Special Publication|volume=4|pages=99–114}}</ref> |
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== Vertebrate paleofauna == |
== Vertebrate paleofauna == |
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Revision as of 17:15, 22 June 2023
| Dinosaur Beds | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Lupata Group |
| Sub-units | Lower Member, Upper Member |
| Underlies | Unconformity with Pliocene Chiwondo Beds |
| Overlies | Precambrian metamorphic basement |
| Thickness | Upper member is 210 m (690 ft) thick in vicinity of CD-9 locality |
| Lithology | |
| Primary | Sandstone, siltstone, mudstone |
| Location | |
| Coordinates | 10°17′S 34°02′E / 10.28°S 34.04°E |
| Region | Northern Region |
| Country |  Malawi |
| Extent | Karonga District |
  Dinosaur Beds (Malawi) | |
The Dinosaur Beds is a geological formation in Malawi whose strata date back to the Early Cretaceous. The age of the deposit is poorly constrained, but is likely to date from the Barremian to Aptian.[1] Dinosaurs, turtles and crocodylomorphs remains are among the fossils that have been recovered from the formation.[2] It is correlated with the Galula Formation in Tanzania. It consists of two members, a lower unfossiliferous member consisting of deep red stained sandstones, and an upper fossiliferous member consisting of white sands and grey to red mudstones and siltstones. The upper member is 210 m thick in the vicinity of the CD-9 locality.[3]
Vertebrate paleofauna
- Karongasaurus gittelmani - A lower mandible and a few teeth
- Malawisaurus dixeyi - "Skull elements, teeth, vertebrae, limb elements osteoderms, of several individuals."[4]
- Malawisuchus mwakasyungutiensis - A skeleton (almost complete articulated skeleton and skull)
- Platycheloides nyasae - A partial shell
- Anura indet.
- Theropoda indet.
Invertebrate fauna
See also
References
- ^ Widlansky, Sarah J.; Clyde, William C.; O'Connor, Patrick M.; Roberts, Eric M.; Stevens, Nancy J. (March 2018). "Paleomagnetism of the Cretaceous Galula Formation and implications for vertebrate evolution". Journal of African Earth Sciences. 139: 403–420. doi:10.1016/j.jafrearsci.2017.11.029. ISSN 1464-343X.
- ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Africa)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 571-573. ISBN 0-520-24209-2.
- ^ WINKLER, DALE A.; GOMANI, ELIZABETH M.; JACOBS, LOUIS L. (2000). "COMPARATIVE TAPHONOMY OF AN EARLY CRETACEOUS SAUROPOD QUARRY, MALAWI, AFRICA". Paleont. Soc. Korea Special Publication. 4: 99–114.
- ^ "Table 13.1," in Weishampel, et al. (2004). Page 269.