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étage: Lutétien supérieur
ref 284/91
Dimensions: approximately 45mm on a plate of approximately 8
Dimensions: 42/37/26mm approximately
Origin: Jaulny/Thiaucourt TGV works
Aptychus / Lamellatpychus wirbel étage: Lutétien supérieurThis is an aptychus; they come in pairs and are used by ammonites to seal themselves inside their shells. Genus: Lamellaptychus species: didayi Stage: Valanginian (Cretaceous) Origin: Drme, France It measures approximately 20mm, which is quite large, as the usual dimensions are more around 10 to 15mm. B6
