AmmosaurusvsPachycephalo-saurus
Ammosaurus has a higher Time Span (15 vs 3 Myr), while Ammosaurus has a higher Earliest Appearance (195 vs 69 Ma), while Ammosaurus has a higher Temporal Midpoint (188 vs 68 Ma).
Physical Characteristics
5
Length
3
N/A
Weight
450
herbivorous
Diet
herbivorous
Classification
prosauropod
Type
pachycephalosaur
Temporal Range
Early Jurassic
Era
Late Cretaceous
195
Earliest Appearance
69
180
Latest Appearance
66
15
Time Span
3
188
Temporal Midpoint
68
Discovery
1,891
Year Discovered
1,943
USA
Discovery Location
Canada, USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).