Encyclopedia

Seitaad: Profile of a Prehistoric Giant Seitaad Seitaad (SAY-ih-tawd; “Sand Monster”) is a genus of basal sauropodomorph dinosaur that lived during the Early Jurassic period, approximately 184 million years ago, in what is now Utah, USA. The name Seitaad comes from a sand monster in Navajo mythology, reflecting how the fossil was found buried in […]

Selimissus Selimissus (SEH-lee-MISS-us; “Seli’s lizard”) is a genus of ornithopod dinosaur believed to have lived during the Late Cretaceous period, approximately 75 to 70 million years ago. Fossil remains attributed to Selimissus have been discovered in geological formations suggesting it inhabited what is now western North America. The name “Selimissus” is thought to be derived

Sellosaurus: Profile of a Prehistoric Giant Sellosaurus Sellosaurus (SELL-oh-SAWR-us; “Saddle lizard”) is a genus of basal sauropodomorph dinosaur that lived during the Late Triassic period, around 215 to 210 million years ago, in what is now Germany. The name refers to a saddle-shaped depression observed on some of its vertebrae. Sellosaurus was first named by

Serendipaceratops: Profile of a Prehistoric Giant Serendipaceratops Serendipaceratops (seh-ren-DIP-ah-SEH-rah-tops; “Serendipitous horned face”) is a genus of herbivorous dinosaur that lived during the Early Cretaceous period, about 115 to 110 million years ago, in what is now Victoria, Australia. The name highlights the lucky, or serendipitous, way its fossil was found and its initial, though now

Serikornis: Profile of a Prehistoric Feathered Dinosaur Serikornis Serikornis (SEH-rih-KORN-iss; “Silk Bird”) is a genus of small, feathered anchiornithid theropod dinosaur that lived during the Late Jurassic period, about 160 million years ago. Its fossils were discovered in the Tiaojishan Formation in Liaoning Province, China, an area famous for its exceptionally preserved fossils. The name

Shamosaurus: Profile of a Prehistoric Giant Shamosaurus Shamosaurus (SHAH-mo-SAWR-us; “Shamo lizard”) is a genus of ankylosaurid dinosaur that roamed the earth during the Early Cretaceous period, approximately 125 to 100 million years ago. Its fossils have been discovered in Mongolia, specifically in the Gobi Desert region. The name Shamosaurus refers to “Shamo,” a Chinese term

Shanag: Profile of a Small Cretaceous Predator Shanag Shanag (SHA-nag; “after the black-hatted dancers in the Buddhist Tsam festival”) is a genus of small dromaeosaurid theropod dinosaur that lived during the Early Cretaceous period, approximately 115 to 100 million years ago. Its fossils were discovered in the Öösh Formation in Mongolia. Shanag was first described

Shantungosaurus: Profile of a Prehistoric Giant Shantungosaurus Shantungosaurus (SHAN-tung-oh-SAWR-us; “Shandong Lizard”) is a genus of very large saurolophine hadrosaurid (duck-billed) dinosaur that lived during the Late Cretaceous period, approximately 70 million years ago, in what is now Shandong Province, China. The name refers to the historic name of the province where its fossils were first

Shanxia: Profile of a Prehistoric Giant Shanxia Shanxia (SHAN-shee-ah; “From Shanxi”) is a genus of ankylosaurid dinosaur that lived during the Late Cretaceous period, approximately 75 to 70 million years ago, in what is now China. Its name refers to the Shanxi Province where its fossils were discovered. Shanxia was first described in 1998 by

Shaochilong: Profile of a Prehistoric Giant Shaochilong Shaochilong (SHAH-oh-chee-LONG; “Shark-toothed dragon”) is a genus of carcharodontosaurid theropod dinosaur that lived during the Late Cretaceous period, approximately 92 million years ago, in what is now China. The name is derived from Mandarin Chinese: ‘shao’ (shark), ‘chi’ (tooth), and ‘long’ (dragon), referring to its sharp, blade-like teeth.