ProtohadrosvsStygimoloch
Protohadros has a higher Time Span (5 vs 1 Myr), while Protohadros has a higher Length (6 vs 3 m), while Protohadros has a higher Earliest Appearance (99 vs 67 Ma).
Physical Characteristics
6
Length
3
N/A
Weight
N/A
herbivorous
Diet
herbivorous
Classification
large ornithopod
Type
pachycephalosaur
Temporal Range
Late Cretaceous
Era
Late Cretaceous
99
Earliest Appearance
67
94
Latest Appearance
66
5
Time Span
1
97
Temporal Midpoint
67
Discovery
1,998
Year Discovered
1,983
USA
Discovery Location
USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).