Ksar Metlili Formation

Ksar Metlili Formation
Stratigraphic range: Late Tithonian to Early Berriasian
Type Geological formation
Unit of Moroccan Red Beds
Underlies Dekkar Group
Overlies Anoual Formation
Thickness ~80 m (260 ft)
Lithology
Primary Mudstone, sandstone
Other Limestone, marl, calcarenite
Location
Coordinates 32°42′N 3°06′W / 32.7°N 3.1°W / 32.7; -3.1Coordinates: 32°42′N 3°06′W / 32.7°N 3.1°W / 32.7; -3.1
Approximate paleocoordinates 25°06′N 1°54′E / 25.1°N 1.9°E / 25.1; 1.9
Region Figuig Province
Country  Morocco
Extent High Atlas
Type section
Named for Ksar Met Lili Fort

The Ksar Metlili Formation is a geological formation in eastern High Atlas of Morocco, it is late Tithonian to Berriasian in age. It is approximately 80 metres thick and primarily consists of mudstone and sandstone, with thin calcareous beds.[1] One of these calcareous beds near the middle of the sequence is an important microvertebrate locality.[2]

Paleobiota

Amphibians

Amphibians of the Ksar Metlili Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Anoualerpeton[3] A. unicus "Right premaxilla missing most of pars palatinum and lateralmost part of pars dentalis, with preserved tooth row containing three broken teeth and five tooth slots" Albanerpetonid
Aygroua A. anoualensis Frog
aff. Enneabatrachus Indeterminate Discoglossid Frog
Rubricacaecilia[4] R. monbaroni Nearly complete right pseudodentary, partial left pseudodentaries, partial right pseudangular, partial palatine, atlas, postcranial vertebrae Stem-caecilian

Lepidosaurs

Lepidosaurs of the Ksar Metlili Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Paramacellodus P. marocensis Left dentary with 12 teeth Lizard
Tarratosaurus T. anoualensis Lizard
Tingitana T. anoualae Sphenodontid

Dinosaurs

DInosaurs of the Ksar Metlili Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Theropoda[5] Indeterminate Teeth
Maniraptoriformes[5] Indeterimnate Teeth
Dromeosauridae[5] Indeterminate Teeth
Ornithischia Indeterminate

Mammals

Mammals of the Ksar Metlili Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Afriquiamus A. nessovi Peramurid
Atlasodon[6] A. monbaroni Theriiform
Donodon[6] D. prescriptoris
Denisodon D. moroccensis
Dyskritodon[7] D. amazighi Eutriconodontan
Ichthyoconodon[7] I. jaworowskorum Triconodontid
Tribotherium T. africanum
Hypomylos H. phelizoni, H. micros
Minimus M. richardfoxi
Peramus Indeterminate
Microderson[6] M. laaroussii
Thereuodon T. dahmani
Hahnodon H. taqueti
Amphilestidae Indeterimate
Dryolestidae Indeterminate

References

  1. ↑ Haddoumi, Hamid; Allain, Ronan; Meslouh, Said; Metais, Grégoire; Monbaron, Michel; Pons, Denise; Rage, Jean-Claude; Vullo, Romain; Zouhri, Samir (2016-01). "Guelb el Ahmar (Bathonian, Anoual Syncline, eastern Morocco): First continental flora and fauna including mammals from the Middle Jurassic of Africa". Gondwana Research. 29 (1): 290–319. doi:10.1016/j.gr.2014.12.004. ISSN 1342-937X. Check date values in: |date= (help)
  2. ↑ "Ksar Met-Lili, Anoual". Paleobiology Database. Retrieved 24 August 2018.
  3. ↑ Gardner, J.D., Evans, S.E., and Sigogneau−Russell, D. (2003). New albanerpetontid amphibians from the Early Cretaceous of Morocco and Middle Jurassic of England. Acta Palaeontologica Polonica 48(2): 301–319.
  4. ↑ Evans, S. E. & Sigogneau-Rusell, D. (2001) A stem-group caecilian (Amphibia: Lissamphibia) from the Lower Cretaceous of Morocco. Palaeontology 44, 259–273.
  5. 1 2 3 Knoll, F.; Ruiz-Omeñaca, J. I. (2009/07). "Theropod teeth from the basalmost Cretaceous of Anoual (Morocco) and their palaeobiogeographical significance". Geological Magazine. 146 (4): 602–616. doi:10.1017/S0016756809005950. ISSN 1469-5081. Check date values in: |date= (help)
  6. 1 2 3 D. Sigogneau-Russell. 1991. Nouveaux Mammiferes theriens du Cretace inferieur du Maroc. Comptes-Rendus de l'Academis des Sciences du Paris, series II 313:279-285
  7. 1 2 Sigogneau-Russell, D. (1995) Two possibly aquatic triconodont mammals from the Early Cretaceous of Morocco. Acta Palaeontologica Polonica. 40(2), p.149-162.
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