AlectrosaurusvsPolacanthus
Polacanthus has a higher Latest Appearance (125 vs 70 Ma), while Polacanthus has a higher Temporal Midpoint (125 vs 80 Ma), while Polacanthus has a higher Earliest Appearance (125 vs 90 Ma).
Physical Characteristics
5
Length
5
N/A
Weight
N/A
carnivorous
Diet
herbivorous
Classification
large theropod
Type
armoured dinosaur
Temporal Range
Late Cretaceous
Era
Early Cretaceous
90
Earliest Appearance
125
70
Latest Appearance
125
20
Time Span
N/A
80
Temporal Midpoint
125
Discovery
1,933
Year Discovered
1,881
China, Mongolia
Discovery Location
England, UnitedKingdom
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).