AlvarezsaurusvsHylaeosaurus
Hylaeosaurus has a higher Time Span (15 vs 4 Myr), while Hylaeosaurus has a higher Length (5 vs 2 m), while Hylaeosaurus has a higher Earliest Appearance (150 vs 89 Ma).
Physical Characteristics
2
Length
5
N/A
Weight
N/A
carnivorous
Diet
herbivorous
Classification
small theropod
Type
armoured dinosaur
Temporal Range
Late Cretaceous
Era
Early Cretaceous
89
Earliest Appearance
150
85
Latest Appearance
135
4
Time Span
15
87
Temporal Midpoint
143
Discovery
1,991
Year Discovered
1,833
Argentina
Discovery Location
England, UnitedKingdom
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).