Mugher Mudstone

Mugher Mudstone
Stratigraphic range: Tithonian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Underlies	Debre Libanos Sandstone, Amba Aradam Formation
Overlies	Antalo Limestone
Thickness	320 m (1,050 ft)
Lithology
Primary	Mudstone, sandstone
Other	Gypsum, dolomite, shale (base)
Location
Coordinates	9°30′N38°36′E / 9.5°N 38.6°E / 9.5; 38.6
Approximate paleocoordinates	12°18′S24°48′E / 12.3°S 24.8°E / -12.3; 24.8
Region	Shewa
Country	Ethiopia
Extent	Ethiopian Highlands
Mugher Mudstone (Ethiopia)

The Mugher Mudstone is a geologic formation located in Ethiopia. It dates to the Tithonian stage of the Late Jurassic. The lithology consists of gypsum, dolomite and shale alternations at the base, overlain by mudstone intercalated with fine to medium grained sandstone. ^[1]

Indeterminate dromaeosaurid teeth are known from the formation. ^[2] Many other remains have been uncovered also, including indeterminate ornithopods and allosauroids. ^[3] The tooth of a macronarian sauropod is known from the formation ^[4]

Fossil content

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Ornithischians

Ornithischians of the Mugher Mudstone
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Ornithopoda Indet.	Indeterminate	Shewa	Tithonian		An indeterminate ornithopod

Sauropods

Sauropods of the Mugher Mudstone
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Macronaria Indet.	Indeterminate	Shewa	Tithonian	Tooth	A macronarian sauropod

Theropods

Theropods of the Mugher Mudstone
Genus	Species	Location	Stratigraphic position	Material	Notes	Image
Allosauroidea Indet.	Indeterminate	Shewa	Tithonian		A allosauroid theropod
Dromaeosauridae Indet.	Indeterminate	Shewa	Tithonian	Teeth	A dromaeosaurid theropod

See also

• Africa portal
• Paleontology portal
• Dinosaurs portal

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with indeterminate dinosaur fossils
• List of fossiliferous stratigraphic units in Ethiopia
• Geology of Ethiopia

References

1. Assefa, Getaneh (1991-08-10). "Lithostratigraphy and environment of deposition of the Late Jurassic - Early Cretaceous sequence of the central part of Northwestern Plateau, Ethiopia". Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 182 (3): 255–284. doi:10.1127/njgpa/182/1991/255. ISSN   0077-7749.
2. Mortimer, Mickey. "List of Dromaeosaurids". Archived from the original on July 28, 2014. Retrieved March 27, 2014.
3. Goodwin, Mark B.; Clemens, William A.; Hutchison, J. Howard; Wood, Craig B.; Zavada, Michael S.; Kemp, Anne; Duffin, Christopher J.; Schaff, Charles R. (1999-12-13). "Mesozoic continental vertebrates with associated palynostratigraphic dates from the northwestern Ethiopian plateau". Journal of Vertebrate Paleontology. 19 (4): 728–741. Bibcode:1999JVPal..19..728G. doi:10.1080/02724634.1999.10011185. ISSN   0272-4634.
4. Goodwin, Mark B.; Irmis, Randall B.; Wilson, Gregory P.; DeMar, David G.; Melstrom, Keegan; Rasmussen, Cornelia; Atnafu, Balemwal; Alemu, Tadesse; Alemayehu, Million (November 2019). "The first confirmed sauropod dinosaur from Ethiopia discovered in the Upper Jurassic Mugher Mudstone". Journal of African Earth Sciences. 159 103571. Bibcode:2019JAfES.15903571G. doi: 10.1016/j.jafrearsci.2019.103571 .

Bibliography

• Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.  ISBN   0-520-24209-2.