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Ksar Metlili Formation
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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 (260 ft) 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] Subsequent to the original site, several other localities have been sampled. The depositional environment is thought to be near shore deltaic.[3][4]
Quick Facts Type, Unit of ...
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 | 32.7°N 3.1°W / 32.7; -3.1 |
Approximate paleocoordinates | 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 |
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Fossil content
Fish
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Cypriniformes[3] | Indeterminate | Ksar Metlili | Teeth | Bony Fish | |
Egertonodus[3][5] | E. basanus | Ksar Metlili |
|
Hybodontid | |
Ginglymodi[3] | Indeterminate | Ksar Metlili |
|
Bony Fish | |
Hybodus[3][6] | sp. | Ksar Metlili | Teeth | Hybodontid | ![]() |
Lepidotes[3] | sp. | Ksar Metlili | Teeth | Lepidotidae | ![]() |
Lonchidion[5] | L. (Lissodus) marocensis | Ksar Metlili | MCM108, isolated tooth | Lonchidiid | |
Mawsoniidae[3] | Indeterminate | Ksar Metlili | KM-A2-11, left postparietal shield | Coelacanth | |
Osteoglossiformes[3] | Indeterminate | Ksar Metlili | KM-B'-89, teeth | Bony Fish | |
Polyacrodus[3][6] | sp. | Ksar Metlili | Teeth | Polyacrodontid | |
Ptychoceratodontidae[3][7] | Indeterminate | Ksar Metlili |
|
Lungfish | |
Pycnodontidae[3] | Indeterminate | Ksar Metlili |
|
Pycnodontiform | |
Semionotidae[3] | Indeterminate | Ksar Metlili | Teeth | Bony Fish | |
?Siluriformes/?Polypteriformes[3] | Indeterminate | Ksar Metlili |
|
Bony Fish |
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Amphibians
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Alytidae[3] | Indeterminate | Ksar Metlili | KM-B'-18, dorsal vertebrae | Toad | |
Anoualerpeton[3][8] | A. unicus | Ksar Metlili |
|
Albanerpetontid | ![]() |
Anura[3][9] | Indeterminate | Ksar Metlili |
|
Frogs | |
Aygroua[9] | A. anoualensis | Ksar Metlili |
|
Frog | |
Enneabatrachus[9] | aff.sp. | Ksar Metlili | ACMC60, left illium | Discoglossid Frog | |
Rubricacaecilia[10] | R. monbaroni | Ksar Metlili | Nearly complete right pseudodentary, partial left pseudodentaries, partial right pseudangular, partial palatine, atlas, postcranial vertebrae | Stem-caecilian | ![]() |
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Lepidosaurs
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Lacertilia[11] | Indeterminate | Ksar Metlili | Teeth | Lizard | |
Paramacellodus[12] | P. marocensis | Ksar Metlili |
|
Paramacellodidae Lizard | |
Paramacellodidae[11] | Indeterminate | Ksar Metlili | Teeth | Lizard | |
Scincomorpha[3] | Indeterminate | Ksar Metlili |
|
Lizard | |
Squamata[3][13] | Indeterminate | Ksar Metlili |
|
Lizard? | |
Sphenodontia[3][6] | Indeterminate | Ksar Metlili | "Sphenodontian B", teeth; KM-B'-14, dorsal vertebra | Distinct from Tingitana | |
Tarratosaurus[3][11] | T. anoualensis | Ksar Metlili | MNHN MCM 140; KM-B'-20, right dentary | Lizard | |
Tingitana[6] | T. anoualae | Ksar Metlili | MCM 120, a mandible | Sphenodontid |
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Turtles
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Araripemydidae[3] | Indeterminate | Ksar Metlili | Isolated Plastrons | Pelomedusoide Turtle | |
Cryptodira[13] | Indeterminate | Ksar Metlili | Isolated Plastrons | Turtle | |
Pleurodira[3][13] | Indeterminate | Ksar Metlili | Isolated Plastrons | Turtle | |
Taquetochelys[13] | sp. | Ksar Metlili | Isolated Plastrons | An Araripemydid turtle | |
Testudinata[3][4] | Indeterminate | Ksar Metlili |
|
Turtle |
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Choristoderes
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Choristodera[3] | Indeterminate | Ksar Metlili |
|
Similar to Cteniogenys |
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Crocodrylomorphs
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Atoposauridae[3] | Indeterminate | Ksar Metlili |
|
Crocodrylomorph | |
Goniopholididae/Pholidosauridae[4] | Indeterminate | Ksar Metlili |
|
Crocodrylomorph | |
Crocodylomorpha[3] | Indeterminate | Ksar Metlili |
|
Crocodrylomorph | |
Teleosauridae[3] | Indeterminate | Ksar Metlili |
|
Marine Crocodrylomorph | |
Theriosuchus[3] | Cf.T. sp. | Ksar Metlili | KM-B'-42, premaxillary | An Atoposaurid |
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Pterosaurs
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Ctenochasmatidae[3] | Indeterminate | Ksar Metlili | Teeth | Pterosaur | |
Pterosauria[14] | Indeterminate | Ksar Metlili |
|
Pterosaur | |
Rhamphorhynchidae[3] | Indeterminate | Ksar Metlili | Teeth | Pterosaur |
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Dinosaurs
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Dromeosauridae[3][15] | Indeterminate | Ksar Metlili |
|
Coelurosaur | |
Maniraptoriformes[3][15] | Indeterminate | Ksar Metlili |
|
Coelurosaur | |
Ornithischia[7] | Indeterminate | Ksar Metlili |
|
Ornithischian | |
Theropoda[3][15][7] | Indeterminate | Ksar Metlili |
|
Theropod | |
Velociraptorinae[15] | Indeterminate | Ksar Metlili |
|
Coelurosaur |
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Mammals
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Afriquiamus[16] | A. nessovi | Ksar Metlili | SA 84 (holotype upper left molar) | Peramurid | |
Atlasodon[17] | A. monbaroni | Ksar Metlili | MNHN SA 27 (holotype right upper molar) | Theriiform | |
Amazighodon[18] | A. orbis | Ksar Metlili |
|
Donodontid | |
Amphilestidae[7] | Indeterminate | Ksar Metlili | Teeth | Amphilestid | |
Anoualestes[18] | A. incidens | Ksar Metlili |
|
Donodontid | |
Cynodontia?[19] | Indeterminate | Ksar Metlili |
|
Two morphotypes, non tritylodontid | |
Denisodon[20] | D. moroccensis | Ksar Metlili | Isolated m2 MNHN SA 97 | Hahnodontidae Haramiyidan | |
Donodon[17][18] | D. prescriptoris, D. minor, sp. | Ksar Metlili |
|
Donodontid | |
Dryolestidae[13] | Indeterminate | Ksar Metlili | KM-D2-4, left lower molar | Dryolestid | |
Dryolestoidea[3] | Indeterminate | Ksar Metlili |
|
Dryolestoid | |
Dyskritodon[21] | D. amazighi | Ksar Metlili | MNHN SA 92 (holotype right lower molar) | Eutriconodontan | ![]() |
Eutriconodonta[3] | Indeterminate | Ksar Metlili |
|
Eutriconodontan | |
Gobiconodon[22] | G. palaios | Ksar Metlili |
|
Eutriconodontan | ![]() |
Hahnodon[20] | H. taqueti | Ksar Metlili | left m2 | Hahnodontidae Haramiyidan | |
Hahnodontidae[20] | Indeterminate | Ksar Metlili | Posterior upper premolar; Lower incisor | Hahnodontidae Haramiyidan | |
Hypomylos[23][24] | H. phelizoni, H. micros; sp. | Ksar Metlili |
|
Tribosphenidan | |
Ichthyoconodon[21] | I. jaworowskorum | Ksar Metlili |
|
Volaticothere | ![]() |
Kryptotherium[22] | K. polysphenos | Ksar Metlili |
|
Eutriconodonta | |
Mammalia[3] | Indeterminate | Ksar Metlili |
|
Mammal | |
Microderson[17] | M. laaroussii | Ksar Metlili | MNHN SA 40 (holotype upper right molar) | Mammal | |
Minimus[16] | M. richardfoxi | Ksar Metlili | SA 122 (holotype left lower molar), 10 (right lower molar), 64 (left lower molar) | Zatherian | |
Peramuridae[7] | Indeterminate | Ksar Metlili | Teeth | Peramurid | |
Peramus[16] | sp. | Ksar Metlili | SA 37 (small tooth) | Peramurid | |
Stylodens[18] | S. amerrukensis | Ksar Metlili | MCM 578, right upper molar | Donodontid | |
Symmetrodonta[3] | Indeterminate | Ksar Metlili | KM-B'-36, teeth; | Mammal | |
Thereuodon[25] | T. dahmani | Ksar Metlili | Teeth | Thereuodontid Symmetrodont | |
Tribotheria[23][26] | Indeterminate | Ksar Metlili | SA 55 (left trigonid), 4 (upper left labial tooth fragment) | Tribosphenidan | |
Tribotherium[23][26] | T. africanum | Ksar Metlili |
|
Tribosphenidan | |
Triconodontidae[7] | Indeterminate | Ksar Metlili | Teeth | Triconodontid | |
Zatheria[3] | Indeterminate | Ksar Metlili | Teeth | Cladotherian |
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Plants
More information Genus, Species ...
Genus | Species | Location | Material | Notes | Images |
---|---|---|---|---|---|
Coniferophyta[4] | Indeterminate | Ksar Metlili | Branched Shoots | Conifer | |
Phlebopteris/Piazopteris[4] | Indeterminate | Ksar Metlili | Fronds | A Matoniaceae fern | ![]() |
Ruffordia?[4] |
|
Ksar Metlili | Fronds | A Schizaeaceae fern |
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References
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