AlamosaurusvsMamenchisaurus
Mamenchisaurus has a higher Time Span (10 vs 4 Myr), while Mamenchisaurus has a higher Earliest Appearance (155 vs 70 Ma), while Mamenchisaurus has a higher Temporal Midpoint (150 vs 68 Ma).
Physical Characteristics
21
Length
22
N/A
Weight
N/A
herbivorous
Diet
herbivorous
Classification
sauropod
Type
sauropod
Temporal Range
Late Cretaceous
Era
Late Jurassic
70
Earliest Appearance
155
66
Latest Appearance
145
4
Time Span
10
68
Temporal Midpoint
150
Discovery
1,922
Year Discovered
1,954
USA
Discovery Location
China
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).