Tyrannostorus
Tyrannostorus is an interactive shopping experience. Unlock your inner paleontologist.
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Let’s uncover the secrets of the mighty Gigantopithecus! 🦧
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06/22/2026
A new GIANT Cleoniceras ammonite shell from Madagascar has arrived at the Tyrannostorus!
Cleoniceras is a rather involute, high-whorled hoplitid from the Lower to basal Middle Albian of Europe, Madagascar, and the Transcaspian region. The shell has a generally small umbilicus, arched to acute venter, and typically at some growth stage, falcoid ribs that spring in pairs from umbilical tubercles, usually disappearing on the outer whorls.
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Telephone
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Address
1816 West Baseline Road
Mesa, AZ
85202
Opening Hours
| Monday | 11am - 6pm |
| Tuesday | 11am - 6pm |
| Wednesday | 11am - 6pm |
| Thursday | 11am - 6pm |
| Friday | 11am - 6pm |
| Saturday | 11am - 6pm |
| Sunday | 11am - 5pm |