AlvarezsaurusvsSegisaurus
Segisaurus has a higher Time Span (15 vs 4 Myr), while Segisaurus has a higher Earliest Appearance (195 vs 89 Ma), while Segisaurus has a higher Temporal Midpoint (188 vs 87 Ma).
Physical Characteristics
2
Length
2
N/A
Weight
N/A
carnivorous
Diet
carnivorous
Classification
small theropod
Type
small theropod
Temporal Range
Late Cretaceous
Era
Mid Jurassic
89
Earliest Appearance
195
85
Latest Appearance
180
4
Time Span
15
87
Temporal Midpoint
188
Discovery
1,991
Year Discovered
1,936
Argentina
Discovery Location
USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).