Anatosaurus is een geslachtsnaam die vroeger gebruikt werd om een aantal fossielen van dinosauriërs behorende tot de Hadrosauria in onder te brengen. Tegenwoordig zijn al deze vondsten aan andere geslachten toegewezen, met name Edmontosaurus en Anatotitan, maar het besef hiervan is nog niet geheel tot de populairwetenschappelijke lectuur doorgedrongen, zodat men de naam nog geregeld tegenkomt, met grote verwarring onder de lezers als gevolg.
Anatosaurus (meaning duck lizard) is a chronological hadrosaurid dinosaur genus. However, “Anatosaurus Dinosaur” has been establish to be a junior synonym of Edmontosaurus and is now an invalid name.
- Kingdom: Animalia
- Phylum: Chordata
- Class: Sauropsida
- Superorder: Dinosauria
- Order: Ornithischia
- Suborder: Ornithopoda
- Family: Hadrosauridae
- Subfamily: Saurolophinae
- Genus: Anatosaurus
Anatosaurus (genus Anatosaurus), subsumes Trachodon , bipedal duck-billed dinosaurs (hadrosaurs) of the Late Cretaceous Period, commonly found as fossils in North American rocks 70 million to 65 million years old. Related forms such as Edmontosaurus and Shantungosaurus have been found elsewhere in the Northern Hemisphere.
It is later classified as a genus of Edmontosaurus. Anatosaurus is a junior synonym of Edmontosaurus annectens. It’s smaller and lighter than the type species. Anatosaurus grew to a total of metres (30–40 feet) and was heavily built. The skull was long and the beak broad and flat, much like a duck’s bill. As in all iguanodontids and hadrosaurs, there were no teeth in the beak itself, which was covered by a horny sheath.
Anatosaurus dinosaur Size
Anatosaurus dinosaur grew to a length of 9–12 metres (30–40 feet) and was heavily built. The skull was long and the beak broad and flat, much like a duck’s bill. As in all iguanodontids and hadrosaurs, there were no teeth in the beak itself, which was covered by a horny sheath.
However, several hundred rather blunt teeth were arranged in rows along the sides of the cheeks at any given time. There were dozens of teeth along each row, and several rows of exposed and partially worn replacement teeth were present behind the outer teeth. Not all were functional simultaneously, but, as teeth became worn or lost, they were replaced continually by new ones.