PolacanthusvsProtohadros
Polacanthus has a higher Latest Appearance (125 vs 94 Ma), while Polacanthus has a higher Temporal Midpoint (125 vs 97 Ma), while Polacanthus has a higher Earliest Appearance (125 vs 99 Ma).
Physical Characteristics
5
Length
6
N/A
Weight
N/A
herbivorous
Diet
herbivorous
Classification
armoured dinosaur
Type
large ornithopod
Temporal Range
Early Cretaceous
Era
Late Cretaceous
125
Earliest Appearance
99
125
Latest Appearance
94
N/A
Time Span
5
125
Temporal Midpoint
97
Discovery
1,881
Year Discovered
1,998
England, UnitedKingdom
Discovery Location
USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).