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Showing results for tags 'graphoceras'.
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From the album: Middle Jurassic Ammonites from Southern Germany
5cm. A very fine-ribbed species from the so-called Staufensis Bank in the Murchisonae Zone in the Wutach area. Upper Aalenian, Middle Jurassic.- 4 comments
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Graphoceras (Graphoceras) concavum (Sowerby 1815)
Ludwigia posted a gallery image in Member Collections
From the album: Middle Jurassic Ammonites from Southern Germany
12cm. Phragmocone. Geisingen Oolite Formation concavum zone Late Aalenian Found at the clay pit in Geisingen.- 2 comments
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Graphoceras concavum (Sowerby 1815) & Ludwigella sp. (Buckman 1904)
Ludwigia posted a gallery image in Member Collections
From the album: Cephalopods Worldwide
The complete macroconch G.concavum measures 11cm. The Ludwigella sp. is the microconch pendant. From the concavum zone, late Aalenian, middle Jurassic at Bradford Abbas, Dorset, UK.-
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From the album: Cephalopods Worldwide
7cm. From the Aalenian concavum zone, formosum subzone at Vicarage quarry, Bradford Abbas, Dorset, UK.-
- aalenian
- bradford abbas
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Phragmocone.
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Mostly phragmocone with a small section of the body chamber.
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Graphoceras (Graphoceras) v-scriptum (Buckman 1888)
Ludwigia posted a gallery image in Member Collections
From the album: Cephalopods Worldwide
8cm. concavum zone, late Aalenian, middle Jurassic. From Horn Park, Dorset, UK.-
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Graphoceras (Graphoceras) formosum (Buckman 1888)
Ludwigia posted a gallery image in Member Collections
From the album: Cephalopods Worldwide
15cm. concavum zone, late Aalenian, middle Jurassic. From Horn Park, Dorset, UK.-
- aalenian
- graphoceras
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The subgenus Ludwigella is a collective term for what are believed to be microconches for the genus Graphoceras.
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- a643
- achdorf formation
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