Dinosaur Beds: Difference between revisions

Dinosaur Beds
Dinosaur Beds
Stratigraphic range: Barremian–Aptian PreꞒ Ꞓ O S D C P T J K Pg N
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)

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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 crocodyliomorphs 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

Hourcqia a non marine ostracod

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.

[1] 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.

[cretaceousdistribution-2] 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.

[3] 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-13-1-269-4] "Table 13.1," in Weishampel, et al. (2004). Page 269.

[1]

[2]

[3]

[4]

@@ Line 1: / Line 1: @@
+{{Infobox rockunit
-{{Location map+ | Vatican City#Monaco#Nauru#Tuvalu#San Marino#Liechtenstein#Marshall Islands#Saint Kitts and Nevis#Maldives#Malta
+| name           = Dinosaur Beds
+| image          =
+| caption        =
+| type           = [[Geological formation]]
+| age            = {{fossilrange|Barremian|Aptian}}
+| period         = Aptian
+| prilithology   = [[Sandstone]], [[siltstone]], [[mudstone]]
+| otherlithology =
+| namedfor       =
+| namedby        =
+| region         = [[Northern Region, Malawi|Northern Region]]
+| country        = {{flag|Malawi}}
+| unitof         = [[Lupata Group]]
+| subunits       = Lower Member, Upper Member
+| coordinates    = {{Coord|10.28|S|34.04|E|display=inline}}
+| underlies      = Unconformity with [[Pliocene]] [[Chiwondo Beds]]
+| overlies       = [[Precambrian]] [[metamorphic]] [[Basement (geology)|basement]]
+| thickness      = Upper member is {{convert|210|m|ft|abbr=on}} thick in vicinity of CD-9 locality
+| extent         = [[Karonga District]]
+| area           =
+| map            = {{Location map+ | Malawi
 | relief = 1
 | width   = 250
-| float   =
+| float   = center
 | places  =
   {{Location map~ | Malawi
-  | lat_deg =
+  | lat_deg = -10.28
-  | lon_deg =
+  | lon_deg = 34.04
   | mark = Lightgreen pog.svg
   | marksize = 12
   }}
 }}
+| map_caption    =
+}}
+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 crocodyliomorphs 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>
+== Vertebrate paleofauna ==
+* ''[[Karongasaurus|Karongasaurus gittelmani]]'' - A lower mandible and a few teeth
+* ''[[Malawisaurus|Malawisaurus dixeyi]]'' - "Skull elements, teeth, vertebrae, limb elements osteoderms, of several individuals."<ref name="table-13-1-269">"Table 13.1," in Weishampel, et al. (2004). Page 269.</ref>
+* ''[[Malawisuchus|Malawisuchus mwakasyungutiensis]]'' - A skeleton (almost complete articulated skeleton and skull)
+* ''[[Platycheloides|Platycheloides nyasae]]'' - A partial shell
+*[[Frog|Anura indet.]]
+* [[Theropoda|Theropoda indet.]]
+== Invertebrate fauna ==
+* ''[[Hourcqia]]''  a non marine [[ostracod]]
 == See also ==
 * [[List of dinosaur-bearing rock formations]]
 * [[List of fossiliferous stratigraphic units in Malawi]]
+== References ==
+{{Reflist}}
+[[Category:Geologic formations of Malawi]]
+[[Category:Cretaceous paleontological sites of Africa]]
+[[Category:Lower Cretaceous Series of Africa]]
+[[Category:Cretaceous Malawi]]
+[[Category:Aptian Stage]]
+[[Category:Barremian Stage]]
+[[Category:Sandstone formations]]
+[[Category:Siltstone formations]]
+[[Category:Mudstone formations]]
+[[Category:Paleontology in Malawi]]