Pronunciation: Roo-go-caw-dee-ah Meaning of name: "Wrinkled tail", in reference to the highly rugose posterior margins of the tail vertebrae. Species: R. cooneyi Size: Uncertain due to a lack of fossils. Family: Uncertain. Diet: Herbivore. First fossils found: Known only from a metacarpal, a tooth and eighteen tail vertebrae discovered in the Cloverly Formation of Montana (date of discovery uncertain). Named by Cary Woodruff in 2012. Lived: 125 to 112 million years ago during the Aptian and Albian stages of the Early Cretaceous in what is now the western United States.
Pronunciation: Yah-ver-land-e-ah Meaning of name: "From Yaverland", in reference to Yaverland Point on the Isle of Wight where its fossils were discovered. Species: Y. bitholus Size: Unknown due to a lack of fossils. Family: Uncertain. Possible Maniraptoran. Diet: Carnivore. First fossils found: Known only from a single, partial skull discovered in the Wessex Formation of the Isle of Wight in 1930. Named by American palaeontologist, Peter Malcolm Galton, in 1971. Was originally thought to be a Pachycephalosaurid, however, research has shown it to be a Theropod, most likely a Maniraptoran. Lived: 132.9 to 129.4 million years ago during the Hauterivian stage of the Early Cretaceous in what is now the Isle of Wight.
So, almost nothing was found on the Isle of Wight in 1930 and 41 years later, American Mr Galton, thought he'd invent a fabulous, feathery creature that may have been a carnivore.
At least he realised it was a Maniraptoran Therapod and not a Pachycephalosaurid, as any fule should kno.
Pronunciation: True-ah-don Meaning of name: "Wounding tooth". Species: T. formosus Size: Unknown due to a lack of fossils. Family: Troodontidae. Diet: Carnivore First fossils found: Known only from isolated teeth. First discovered in the Judith River Formation of Montana in 1855. Named by American palaeontologist, Joseph Mellick Leidy, in 1856. Some palaeontologists believe that Troodon and another Theropod, Stenonychosaurus, may actually be the same animal. If this is shown to be correct, Troodon would become the official name. Lived: 77 million years ago during the Campanian stage of the Late Cretaceous in what is now the western United States.
Pronunciation: Re-ah-bi-ni-no-had-ros Meaning of name: "Riabinin's hadrosaur". Species: R. weberae. Size: Unknown due to a lack of fossils. Family: Uncertain. Possible Hadrosaurid. Diet: Herbivore. First fossils found: Known only from a partial left leg discovered in Crimea in 1934. Was originally named as a species of Orthomerus by Russian palaeontologist, Anatoly Nikolaevich Riabinin, in 1945. Re-named Riabininohadros by A. V. Lopatin and A. O. Averianov in 2020. Lived: 72.1 to 66 million years ago during the Maastrichtian stage of the Late Cretaceous in what is now Crimea.
Pronunciation: Aj-nah-be-ah Meaning of name: "Stranger" or "Foreigner". Species: A. odysseus Size: Unknown due to a lack of fossils. Family: Lambeosaurinae (a sub-family of Hadrosauridae) Diet: Herbivore. First fossils found: Known only from fragmentary remains including teeth and partial jaws discovered in the Ouled Abdoun Basin of Morocco, North Africa, in 2020. Named in the same year by Nicholas R. Longrich, Xabier Pereda Suberbiola, R. Alexander Pyron and Nour-Eddine Jalil. Whilst its relatives lived in the United States, Europe, Asia and South America, Ajnabia is the first Hadrosaur to be discovered in Africa. However, palaeontologists still aren't sure how this Hadrosaur reached Africa. The only theories are that it either swam across from Europe or there were temporary land bridges, allowing for dinosaurs to spread into new territories. Lived: 72.1 to 66 million years ago during the Maastrichtian stage of the Late Cretaceous in what is now North Africa.
Sorry I didn't post this last night, we had a power cut.
Pronunciation: Moy-el-en-sore-us Meaning of name: "Muyelen lizard", after an indigenous name for the Colorado River in Argentina. Species: M. pecheni Size: 11 metres long, 4 metres tall and weighing around 14 metric tonnes. Family: Rinconsauria. Diet: Herbivore. Likely fed on both high and low-growing vegetation. First fossils found: Known from the partial skeletons of four adults and a juvenile discovered by Marcelino Palomo in the Portezuelo Formation of Neuquén Province, Patagonia, Argentina, in 1997. Named by J. O. Calvo, B. J. González Riga and J. D. Porfiri in 2007. Lived: 89.8 to 86.3 million years ago during the Coniacian stage of the Late Cretaceous in what is now Patagonia, Argentina.
Pronunciation: See-tee-oh-sore-riss-kuss Meaning of name: "Whale lizard like". Species: C. stewarti Size: Estimated to have measured around 15 metres long, 6 metres tall and weighing around 10 metric tonnes. Family: Uncertain. Possibly either a Diplodocid or Mamenchisaurid. Diet: Herbivore. Likely fed on both high and low-growing vegetation. First fossils found: Known only from a single, partial skeleton discovered in the Oxford Clay of southeast England in May 1898. Named by German palaeontologist, Friedrich von Huene, in 1927. Cetiosauriscus is often confused with the similarly named Cetiosaurus. Lived: 166.1 to 163.5 million years ago during the Callovian stage of the Middle Jurassic in what is now eastern England.
Pronunciation: La-jas-ven-ah-tor Meaning of name: "Las Lajas hunter", after the city of Las Lajas, Neuquén Province, Argentina, near where its fossils were discovered. Species: L. ascheriae Size: Estimated to have measured between 3 and 4 metres long, 1.5 metres tall and weighing around 150kgs. Family: Carcharodontosauridae. Diet: Carnivore. First fossils found: Known only from a single, partial skeleton discovered in the Mulichinco Formation of Neuquén Province, Argentina (date of discovery uncertain). Named by R. A. Coria, P. J. Currie, F. Ortega and M. A. Baiano in 2019. Lived: 139.8 to 132.9 million years ago during the Valanginian stage of the Early Cretaceous in what is now western Argentina.
Pronunciation: Mah-shee-ah-kah-sore-us Meaning of name: "Vicious lizard". Species: M. knopfleri Size: Estimated to have measured between 2 and 5 metres long and weighing up to 128kgs. Height uncertain. Family: Noasauridae. Diet: Carnivore. First fossils found: Known from two sets of remains, the first of which was discovered in the Maevarano Formation, Mahajanga Province, northwestern Madagascar, in 1995. Named by palaeontologists, Scott D. Sampson, Matthew Carrano, and Catherine A. Forster in 2001. Additional discoveries were made in 2011. Lived: 71 to 66 million years ago during the Maastrichtian stage of the Late Cretaceous in what is now Madagascar.
Pronunciation: Kim-mer-oh-sore-us Meaning of name: "Kimmeridge lizard", after the Kimmeridge Clay Formation of southern and eastern England where its fossils were discovered. Species: K. langhami Size: Unknown due to a lack of fossils. Family: Cryptoclididae. Diet: Piscivore. First fossils found: Known only from a skull and some neck vertebrae discovered in the Kimmeridge Clay Formation near the town of Kimmeridge in Dorset, southwest England, in 1981. Named in the same year by D. S. Brown. Lived: 157.3 to 152.1 million years ago during the Kimmeridgian stage of the Late Jurassic in the warm oceans that once covered what is now southwest England.
Pronunciation: See-ats Meaning of name: Named after a creature from Ute Native American mythology. Species: S. meekerorum Size: Unknown due to a lack of fossils, but is estimated to have measured around 12 metres long, 4 metres tall and weighing up to 4 metric tonnes. Family: Neovenatoridae Diet: Carnivore First fossils found: Known only from the single, partial skeleton of a juvenile discovered in the Cedar Mountain Formation of eastern Utah in 2008. Named by palaeontologists, Lindsay E. Zanno and Peter J. Makovicky, in 2013. Lived: 100.5 to 93.9 million years ago during the Cenomanian stage of the Late Cretaceous in what is now the western United States.