AlvarezsaurusvsArchaeopteryx
Alvarezsaurus has a higher Length (2 vs 1 m), while Archaeopteryx has a higher Latest Appearance (145 vs 85 Ma), while Archaeopteryx has a higher Temporal Midpoint (147 vs 87 Ma).
Physical Characteristics
2
Length
1
N/A
Weight
N/A
carnivorous
Diet
carnivorous
Classification
small theropod
Type
small theropod
Temporal Range
Late Cretaceous
Era
Late Jurassic
89
Earliest Appearance
149
85
Latest Appearance
145
4
Time Span
4
87
Temporal Midpoint
147
Discovery
1,991
Year Discovered
1,861
Argentina
Discovery Location
Germany
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).