Sauropod dinosaur genus from Late Jurassic-Early Cretaceous Period
Mamenchisaurus
Temporal range: Late Jurassic to Early Cretaceous (Oxfordian to Aptian), 161–114.4 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Possible record during the Albian[1]
Mounted skeleton of M. sinocanadorum, Japan
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Dinosauria
Clade:
Saurischia
Clade:
†Sauropodomorpha
Clade:
†Sauropoda
Family:
†Mamenchisauridae
Genus:
†Mamenchisaurus Young, 1954
Type species
†Mamenchisaurus constructus
Young, 1954
Other species
†M. hochuanensis Young & Zhao, 1972
†M. sinocanadorum Russell & Zheng, 1993
†M. youngi Pi, Ouyang & Ye, 1996
†M. anyuensis He et al., 1996
†M. jingyanensis Zhang, Li & Zeng, 1998
Mamenchisaurus (/məˌmʌntʃiˈsɔːrəs/mə-MUN-chee-SOR-əs, Dinosauria Translation and Pronunciation Guide M or spelling pronunciation /məˌmɛntʃɪˈsɔːrəs/) is a genus of sauropod dinosaur known for their remarkably long necks[2] 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.[4][5][6]
^ abWang, J.; Norell, M. A.; Pei, R.; Ye, Y.; Chang, S.-C (2019). "Surprisingly young age for the mamenchisaurid sauropods in South China". Cretaceous Research. 104: 104176. doi:10.1016/j.cretres.2019.07.006. S2CID 199099072.
^Sues, Hans-Dieter (1997). "Sauropods". In James Orville Farlow; M. K. Brett-Surman (eds.). The Complete Dinosaur. Bloomington: Indiana University Press. pp. 274. ISBN 0-253-33349-0.
^Norman, David B. (2004). "Dinosaur Systematics". In Weishampel, D.B.; Dodson, P.; Osmólska, H. (eds.). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 318. ISBN 0-520-24209-2.
^Russell, D.A., Zheng, Z. (1993). "A large mamenchisaurid from the Junggar Basin, Xinjiang, People Republic of China." Canadian Journal of Earth Sciences, (30): 2082-2095.
^Paul, G.S. (2016). The Princeton Field Guide to Dinosaurs, Princeton University Press.
^Paul, Gregory S. (2019). "Determining the largest known land animal: A critical comparison of differing methods for restoring the volume and mass of extinct animals" (PDF). Annals of the Carnegie Museum. 85 (4): 335–358. doi:10.2992/007.085.0403. S2CID 210840060.
fact that the first Mamenchisaurus fossil was found due to construction work led to Young's naming the type species as Mamenchisaurus constructus. In 1958...
Zhang and Chen, to Mamenchisaurus. They noted that it came from a stratigraphic level between the usual Omeisaurus and Mamenchisaurus beds in age, but more...
Zhongjian ("C.C. Young") and Zhao Xijin in 1972, in a paper describing Mamenchisaurus hochuanensis. The most complete cladogram of Mamenchisauridae is presented...
Argentinosaurus, Alamosaurus, Brachiosaurus, Camarasaurus, Diplodocus, and Mamenchisaurus. The oldest known unequivocal sauropod dinosaurs are known from the...
was the largest predator in a landscape that included the sauropods Mamenchisaurus and Omeisaurus and the stegosaurs Chialingosaurus, Tuojiangosaurus and...
Jean-Baptiste Lamarck for non-arthropod invertebrate animals. The genus Mamenchisaurus is sometimes considered a wastebasket taxon for large, long-necked dinosaurs...
mamenchisaurid. Mamenchisaurus M. constructus Mamenchisaurus assemblage, Upper Shaximiao Formation A mamenchisaurid. M. hochuanensis Mamenchisaurus assemblage...
on Mamenchisaurus-like taxa has hindered proper testing of this hypothesis, and there are several similarities between Euhelopus and Mamenchisaurus-like...
relatively complete skull. Euhelopus was a long-necked sauropod similar to Mamenchisaurus, but its affinities are controversial. Most studies favor a close relationship...
member of Mamenchisauridae, as the sister taxon to the clade containing Mamenchisaurus youngi, Chuanjiesaurus, and Wamweracaudia. Their results are shown in...
metriacanthosaurid theropods and unusual, long-necked sauropods like Mamenchisaurus. Ankylosaurians and ornithopods were also becoming more common, but...
second film, and its centerpiece was a 70-foot-long recreation of a Mamenchisaurus, a dinosaur featured in the film. Another travelling exhibit, The Dinosaurs...
condition. Some sauropods had exceptionally long cervical ribs; those of Mamenchisaurus hochuanensis were nearly 4 meters long. In birds, the cervical ribs...
(such as Elasmosaurus and Mauisaurus) and sauropod dinosaurs (such as Mamenchisaurus, Sauroposeidon, and Supersaurus). Largest organism Largest prehistoric...
reported for Giraffatitan, but exceeded in length by the cervical ribs of Mamenchisaurus. Estimates of Sauroposeidon's size are based on a comparison between...
Rock. Mamenchisaurus appears briefly in The Lost World: Jurassic Park as one of the dinosaurs chased by Peter Ludlow's group. The Mamenchisaurus design...
tailwhip, displays a similar level of caudal co-ossification and that Mamenchisaurus while having the same pattern of vertebral metrics, lacks a tailwhip...
Eomamenchisaurus (meaning "dawn Mamenchisaurus") is a genus of mamenchisaurid sauropod dinosaur from the Middle Jurassic Zhanghe Formation of Yuanmou,...
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