Person 1: Mamenchisaurus (/məˌmʌntʃiˈsɔ rəs/ mə-MUN-chee-SOR-əs, Dinosauria Translation and Pronunciation Guide M or spelling pronunciation /məˌmɛntʃɪˈsɔ rəs/) is a genus of sauropod dinosaur known for their remarkably long necks2 which made up nearly half the total body length.3 Numerous species have been assigned to the genus; however, the validity of these assignments has been questioned. Fossils have been found in the Sichuan Basin and Yunnan Province in China. Several species from the Upper Shaximiao Formation, whose geologic age is uncertain, have been described. However, evidence suggests this formation to be no earlier than the Oxfordian stage of the Late Jurassic. M. sinocanadorum dates to the Oxfordian stage (158.7 to 161.2
mya), and M. anyuensis to the Aptian stage of the
Early Cretaceous (around 114.4
mya).1 Most species were medium-large to large sauropods, measuring roughly
15 to
26 meters (49 to 85
ft) in length—possibly up to 35 meters (115
ft), based on
two undescribed vertebrae.456
Person 2:
Mate stfu