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Lamellaptychus lamellosus (Parkinson)
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By Ludwigia
Taxonomy
Aptychus
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Ammonitida
Family: Haploceratidae
Genus: Lamellaptychus
Species: Lamellaptychus lamellosus
Author Citation Parkinson
Geological Time Scale
Eon: Phanerozoic
Era: Mesozoic
Period: Jurassic
Sub Period: None
Epoch: Late
International Age: Early Kimmeridgian
Stratigraphy
Lacunosa-Mergel Formation
Biostratigraphy
divisum zone
Provenance
Collector: Roger Furze
Date Collected: 11/09/2002
Acquired by: Field Collection
Dimensions
Length: 4 cm
Location
Limestone quarry
Geisingen a. d. Donau
Baden-Wuerttemberg
Germany
Comments
Aptychi mostly existed as bilaterally symmetrical pairs and were part of the anatomy of many ammonites. They are believed to have been either a two-valved closing hatch at the aperture or else a double-plate jaw piece. This particular one is associated with the ammonite genus Taramelliceras.
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