AlamosaurusvsMarshosaurus
Alamosaurus has a higher Length (21 vs 6 m), while Marshosaurus has a higher Time Span (12 vs 4 Myr), while Marshosaurus has a higher Earliest Appearance (154 vs 70 Ma).
Physical Characteristics
21
Length
6
N/A
Weight
N/A
herbivorous
Diet
carnivorous
Classification
sauropod
Type
large theropod
Temporal Range
Late Cretaceous
Era
Late Jurassic
70
Earliest Appearance
154
66
Latest Appearance
142
4
Time Span
12
68
Temporal Midpoint
148
Discovery
1,922
Year Discovered
1,976
USA
Discovery Location
USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).