Protetragonites quadrisulcatum
By phylloceras
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Suborder Lytoceratina
Superfamily Lytocerataceae
Family Lytoceratidae
Subfamily Lytoceratinae
Protetragonites quadrisulcatum
Upper Jurassic, Kimmeridgian
Southern Spain
Photo Information
- Taken with Canon Canon DIGITAL IXUS 95 IS
- Focal Length 6.2 mm
- Exposure Time 1/20
- f Aperture f/2.8
- ISO Speed 400
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