Mesozoic Formations - Maevarano

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Thumbnail:
CorkyCarcharo - www.deviantart...
Dinosaurs:
TheMingau - www.deviantart...
Emily Stepp - www.deviantart...
Antonio De Simone - x.com/antoniod...
Joschua Knüppe - x.com/JoschuaK...
José Carlos Cortés - a-dinosaur-a-d...
AcroSauroTaurus - www.deviantart...
Jack Wood - a-dinosaur-a-d...
Mammals:
Lucas Lima - eartharchives....
Nix Illustration - nixillustratio...
Crocodylomorphs:
Joschua Knüppe - x.com/JoschuaK...
Emily Stepp - www.deviantart...
Nix Illustration - alphynix.tumbl...
Squamates:
Joschua Knüppe - x.com/JoschuaK...
Turtles:
Joschua Knüppe - x.com/JoschuaK...
Amphibians:
Gabriel Vintescu - x.com/GabiVint...

[@PrehistoricTankStudiosPrehisto]

Maevarano Fm. Period: Upper Cretaceous 72-66 mya (Maastrichtian stage). Locality: Madagascar (Mahajanga Basin). Fauna: Majungasaurus, Rapetosaurus, Simosuchus & Beelzebufo. Notes: Fossilized teeth recovered from the formation are said to be from an indeterminate Thyreophoran of some sort. At first the teeth were previously thought to be from a species of Stegosaur (s. madagascariensis), or perhaps from an undescribed genus of Gondwanan Ankylosaur from the clade Parakylosauria. It’s a possibility Cretaceous Madagascar had its own Parankylosaur while other Gondwanan continents (which were once connected) like South America (Stegouros & Patagopelta), Antarctica (Antarctopelta) and Australia (Kunbarrasaurus) had their own. Besides terrestrial and semiaquatic animals, material (mainly of jawbones, toothplates, teeth, vertebrae & scales) of bony fish (Osteichthyans) have been recovered from the Mahajanga basin of Maevarano. Most fossils are from ray-finned fish (Actinopterygians). Unfortunately, some of the fish are currently indeterminate and not well described so I decided to stick with the better known inhabitants. en.wikipedia.org/wiki/Maevarano_Formation#Osteichthyes Within Mahajanga, fossilized burrows that were believed to have been made by ancient aestivating lungfish were found and date back to the Maastrichtian stage. The specific type that made those burrows is currently unknown (possibly ceratodus), being referred to the lungfish class as “Dipnoi indet”. pubs.geoscienceworld.org/sepm/palaios/article-abstract/27/12/857/146230/LUNGFISH-BURROWS-FROM-THE-UPPER-CRETACEOUS Although there’s currently no postcranial material of vintana, its 12-13cm skull shows it grew relatively large perhaps close to a metre. If so, it would’ve greatly surpassed the carnivorous Gobiconodon and rivalled other sizeable Mesozoic mammals like Repenomamus from China (r. giganticus) and Didelphodon from North America. x.com/JoschuaKnuppe/status/1255831215409631232 The skull of Adalatherium is decently big at about 8.4cm, however the specimen belongs to an immature individual and probably grew somewhere close to its contemporary cousin when fully grown. www.dmns.org/media/7539/adalatherium-fact-sheet.pdf

[@maozilla9149]

nice

[@pantheratigristigris5255]

Good video about the fauna of Maevarano, one of the most interesting formations of the Mesozoic

[@ashenfox7615]

Next: Urumaco

[@emmanuelbaltazartorrescisn9639]

Congratulations on the update for the Maevarano formation! Hopefully the Cerro del Pueblo formation comes next soon after this. 🇲🇽🤠🏜🏞🦕🦖🦤🦣