Cyanobacteria, also called cyanophytes and incorrectly referred to as “blue-green algae,” are a phylum of photosynthetic, Gram-negative bacteria. They appear…
Nautiluses, or nautili, are cephalopod molluscs in the family Nautilidae. There are seven known genera of nautilus, all but two…
Coelacanths are sarcopterygian fish in the order Actinistia. There are more than one hundred identified species, nearly all of which…
Horseshoe crabs are arthropods in the family Limulidae. They are one of the best-known examples of “living fossils,” organisms whose…
Geosternbergia is a genus of pterodactyloid pterosaur in the family Pteranodontidae which originally lived during the late Cretaceous period in…
Tarbosaurus is a genus of large tyrannosaurid theropod in the subfamily Tyrannosaurinae. Its fossils are found in Mongolia and China,…
Utahraptor ostrommaysorum is a species of large theropod in the family Dromaeosauridae.
Brontosaurus is a genus of very large sauropod dinosaur in the family Diplodocidae.
Anchiornis huxleyi is a species of small theropod dinosaur in the family Anchiornithidae.
The woolly mammoth (Mammuthus primigenius) is one of the last mammoth species to evolve.
Pneumodesmus newmani is a species of early millipede in the subclass Archipolypoda.
Protoceratops andrewsi is a species of small ceratopsian dinosaur in the family Protoceratopsidae.
Kosmoceratops richardsoni is a species of ceratopsid dinosaur in the subfamily Chasmosaurinae.
Concavenator corcovatus is a species of theropod dinosaur in the family Carcharodontosauridae.
Torosaurus is a genus of ceratopsid dinosaur in the subfamily Chasmosaurinae.
Mononykus olecranus is a species of small theropod dinosaur in the family Alvarezsauridae.
Dracorex hogwartsia is a probably-invalid species of pachycephalosaur in the family Pachycephalosauridae.
Agujaceratops is a genus of ceratopsid dinosaur in the subfamily Chasmosaurinae.
Viavenator exxoni is a species of theropod dinosaur in the family Abelisauridae.
Quilmesaurus curriei is a species of theropod dinosaur in the family Abelisauridae.
