The sauropod hiatus is a period in the North American fossil record for most of the Late Cretaceous noted for its lack of sauropod remains. It may represent an extinction event, possibly caused by competition with ornithischian herbivores, habitat loss from the expansion of the Western Interior Seaway, or both. Alternatively, it has been argued that the hiatus represents a decrease in inland deposits that would have effectively preserved the animals, creating the illusion of an extinction. The sauropod hiatus ended shortly before the end of the Cretaceous, with the appearance of Alamosaurus, most likely an immigrant from South America, in the southern parts of North America.
The sauropodhiatus is a period in the North American fossil record for most of the Late Cretaceous noted for its lack of sauropod remains. It may represent...
meaning "Ojo Alamo lizard") is a genus of opisthocoelicaudiine titanosaurian sauropod dinosaurs containing a single known species, Alamosaurus sanjuanensis,...
Argentina. The type species is Bustingorrytitan shiva. In 2001, several sauropod skeletons were uncovered at the "Bustingorry II" site at Villa El Chocón...
(/bruːˌhæθkeɪoʊˈsɔːrəs/; meaning "huge-bodied lizard") is a controversial genus of sauropod dinosaur found in the Kallamedu Formation of India. The fragmentary remains...
Nigersaurus (/niːˈʒɛərsɔːrəs, ˈnaɪdʒərsɔːrəs/) is a genus of rebbachisaurid sauropod dinosaur that lived during the middle Cretaceous period, about 115 to 105...
the Titanomachy of Greek mythology) is an extinct genus of titanosaurian sauropod dinosaur from the Late Cretaceous La Colonia Formation of Argentina. The...
γίγας (gígas) 'giant', and σαυρος (sauros) 'lizard') is a dubious genus of sauropod dinosaur from the Late Jurassic Kimmeridge Clay Formation of England. The...
Supersaurus (meaning "super lizard") is a genus of diplodocid sauropod dinosaur that lived in North America during the Late Jurassic period. The type species...
brontē "thunder" and σαῦρος, sauros "lizard") is a genus of herbivorous sauropod dinosaur that lived in present-day United States during the Late Jurassic...
Titanosaurus (/taɪˌtænəˈsɔːrəs/; lit. 'titanic lizard') is a dubious genus of sauropod dinosaurs, first described by Richard Lydekker in 1877. It is known from...
Zby is an extinct genus of turiasaurian sauropod dinosaur known from the Late Jurassic (late Kimmeridgian stage) of the Lourinhã Formation, central west...
Sidersaura (meaning "star lizard") is an extinct genus of rebbachisaurid sauropod dinosaur from the Late Cretaceous Huincul Formation of Argentina. The genus...
Jingiella is an extinct genus of mamenchisaurid sauropod dinosaur from the Late Jurassic Dongxing Formation of Guangxi, China. The genus contains a single...
meaning "lizard earthquake god", after the Greek god Poseidon) is a genus of sauropod dinosaur known from several incomplete specimens including a bone bed and...
group of sauropod dinosaurs, including genera from all seven continents. The titanosaurs were the last surviving group of long-necked sauropods, with taxa...
Maraapunisaurus is a genus of sauropod dinosaur from the Late Jurassic Morrison Formation of western North America. Originally named Amphicoelias fragillimus...
Gandititan is an extinct genus of titanosaurian sauropod dinosaur from the Late Cretaceous Zhoutian Formation of China. The genus contains a single species...
Ultrasaurus (meaning "ultra lizard") is a genus of sauropod dinosaur discovered by Haang Mook Kim in South Korea. However, the name was first used unofficially...
Brachiosaurus (/ˌbrækiəˈsɔːrəs/) is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about 154 to 150 million years ago...
Dreadnoughtus is a genus of titanosaurian sauropod dinosaur containing a single species, Dreadnoughtus schrani. D. schrani is known from two partial skeletons...
and includes the largest terrestrial animals ever to exist. The first sauropod species were named in 1842 by Richard Owen, though at the time, he regarded...
Udelartitan is an extinct genus of saltasauroid titanosaurian sauropod dinosaur from the Late Cretaceous Guichón Formation of Uruguay. The genus contains...
Tharosaurus (meaning "Thar desert lizard") is an extinct genus of dicraeosaurid sauropod dinosaur from the Middle Jurassic Jaisalmer Formation of India. The genus...
(/ˌbæroʊˈsɔːrəs/ BARR-oh-SOR-əs) was a giant, long-tailed, long-necked, plant-eating sauropod dinosaur closely related to the more familiar Diplodocus. Remains have...
Patagotitan is a genus of titanosaurian sauropod dinosaur from the Cerro Barcino Formation in Chubut Province, Patagonia, Argentina. The genus contains...
Cenomanian stages, around 112 to 93 million years ago). It was a herbivorous sauropod whose fossils have been found in southern Arizona in the United States...
quadrupedal, herbivorous dinosaurs and is the most common North American sauropod fossil. Its fossil remains have been found in the Morrison Formation, dating...
Amargasaurus (/əˌmɑːrɡəˈsɔːrəs/; "La Amarga lizard") is a genus of sauropod dinosaur from the Early Cretaceous epoch (129.4–122.46 mya) of what is now...
Lithostrotia is a clade of derived titanosaur sauropods that lived during the Early Cretaceous and Late Cretaceous. The group was defined by Upchurch...
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