AlvarezsaurusvsTylocephale
Alvarezsaurus has a higher Length (2 vs 1 m), while Alvarezsaurus has a higher Time Span (4 vs 3 Myr), while Alvarezsaurus has a higher Earliest Appearance (89 vs 75 Ma).
Physical Characteristics
2
Length
1
N/A
Weight
N/A
carnivorous
Diet
herbivorous
Classification
small theropod
Type
pachycephalosaur
Temporal Range
Late Cretaceous
Era
Late Cretaceous
89
Earliest Appearance
75
85
Latest Appearance
72
4
Time Span
3
87
Temporal Midpoint
74
Discovery
1,991
Year Discovered
1,974
Argentina
Discovery Location
Mongolia
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).