The frilled shark is considered a living fossil, because of its primitive, anguilliform (eel-like) physical traits, such as a dark-brown color, amphistyly (the articulation of… Read More »Are Frilled Sharks Still Alive?
Introduction. Helicoprion is an extinct genus of shark-like eugeneodont fish (a group of extinct cartilaginous fishes). Members of Eugenodontida possess a unique morphological feature called… Read More »Is The Helicoprion A Shark?
Stethacanthus is an extinct genus of shark-like holocephalians which lived from the Late Devonian to Late Carboniferous epoch, dying out around 298.9 million years ago.… Read More »Is The Stethacanthus A Shark?
Mosasaurs and sharks are about the same size, and researchers consider the sharks to be the closest living model for mosasaurs, said Young. Mosasaurs are… Read More »Is Mosasaurus A Shark?
At a length of more than 50 feet (15 metres) and a mass of nearly 50 tons (tonnes), Megalodon was both larger and heavier than… Read More »Is A T Rex Bigger Than A Megalodon?
The Greenland shark is the longest-living known vertebrate on Earth, according to a 2016 study published in the journal Science. Researchers using radiocarbon dating determined… Read More »What Sharks Are Older Than Dinosaurs?
Technically no. Megalodon sharks, like dinosaurs, were massive prehistoric animals. However, the word dinosaur is actually very specific, referring to a group of reptiles. Megalodon… Read More »Is There A Dinosaur Named Megalodon?
Defining Dinosaurs. A more handy general definition would go something like this: Dinosaurs are extinct animals with upright limbs that lived on land during the… Read More »What Qualifies A Dinosaur?
Marine reptiles, such as ichthyosaurs, plesiosaurs and mosasaurs are not dinosaurs. Nor is Dimetrodon or other reptiles in the same group (previously called ‘mammal-like reptiles’… Read More »What Is Technically Not A Dinosaur?
Pterosaurs (/ˈtɛrəsɔːr, ˈtɛroʊ-/; from Greek pteron and sauros, meaning “wing lizard”) is an extinct clade of flying reptiles in the order, Pterosauria. They existed during… Read More »Did Flying Dinosaurs Exist?