Poekilopleuron: Profile of a Prehistoric Giant Poekilopleuron Poekilopleuron (POH-ee-KILL-oh-PLOOR-on; “varied rib”) is a genus of large theropod dinosaur that lived during the Middle Jurassic period, approximately 168 to 166 million years ago (Bathonian stage), in what is now Normandy, France. The name, given by paleontologist Jacques Amand Eudes-Deslongchamps in 1838, refers to the different shapes […]
Polacanthus: Profile of a Prehistoric Giant Polacanthus Polacanthus (POL-uh-KAN-thus; “Many Spines”) is a genus of armored ornithischian dinosaur that lived during the Early Cretaceous period, approximately 130 to 125 million years ago. Its fossils have primarily been discovered in England, particularly on the Isle of Wight, with some possible findings in Spain. The name Polacanthus
Polyonax: Profile of a Prehistoric Giant Polyonax Polyonax (POL-ee-oh-nax; “master of many”) is a genus of ceratopsian dinosaur that lived during the Late Cretaceous period, approximately 68 to 66 million years ago. Its fossils were discovered in what is now Colorado, in the United States. The name Polyonax was given by the famous American paleontologist
Ponerosteus: Profile of an Enigmatic Archosaur Ponerosteus Ponerosteus (POH-neh-ROSS-tee-us; “Worthless Bone”) Ponerosteus is a genus of archosaur, potentially a dinosaur, known from the Late Cretaceous period, specifically the Cenomanian stage (about 99 to 94 million years ago). Its fossils were found in what is now the Czech Republic. The name Ponerosteus was given by paleontologist
Poposaurus: Profile of a Prehistoric Giant Poposaurus Poposaurus (POP-oh-SAWR-us; “Popo Agie lizard”) was a fascinating archosaur that lived during the Late Triassic period, about 230 to 210 million years ago, in what is now North America. The name refers to the Popo Agie Formation in Wyoming, where its fossils were first discovered. Although Poposaurus walked
Portellsaurus: Profile of a Prehistoric Giant Portellsaurus Portellsaurus (por-TEL-lih-SAWR-us; “Portell lizard”) is a genus of styracosternan ornithopod dinosaur that lived during the Early Cretaceous period, specifically the late Barremian age, about 127 to 126 million years ago, in what is now Spain. The name Portellsaurus honors the town of Portell de Morella in the Castellón
Powellvenator – Dinosaur Encyclopedia Powellvenator Powellvenator (POW-el-ven-AH-tor; “Powell’s hunter”) is a genus of megaraptoran theropod dinosaur that lived during the Late Cretaceous period, around 80 million years ago, in what is now Argentina, South America. The name honors the Argentine paleontologist Jaime Eduardo Powell for his contributions to the study of dinosaurs in the region.
Pradhania Pradhania (pra-DAH-nee-uh; “named after Dhiraj Kumar Pradhan”) is a genus of basal sauropodomorph dinosaur that lived during the Early Jurassic period, approximately 199 to 190 million years ago, in what is now India. The name honors Dhiraj Kumar Pradhan, a geologist who assisted in the discovery of the fossil locality. Pradhania was first described
Prenocephale: Profile of a Prehistoric Giant Prenocephale Prenocephale (PREH-no-SEF-uh-lee; “Sloping Head”) is a genus of pachycephalosaurid dinosaur that lived during the Late Cretaceous period, approximately 70 million years ago. Its fossils have been discovered in the Nemegt Formation of Mongolia. The name Prenocephale comes from Greek words meaning “sloping” or “inclined” and “head,” referring to
Prenoceratops: Profile of a Prehistoric Giant Prenoceratops Prenoceratops (PREE-no-SEHR-uh-tops; “Sloping Horn Face”) is a genus of leptoceratopsid ceratopsian dinosaur that lived during the Late Cretaceous period, specifically the Campanian stage, about 83 to 74 million years ago. Its fossils were discovered in what is now Montana, USA, in the Two Medicine Formation. Prenoceratops was first
