Aulacostephanus autissiodorensis, ammonite
Shown here is an Upper Jurassic microconch (small form) ammonite with lappets on the heavily ribbed shell
Picture No
10711522
Media ID
47575940
Size
3541px x 4976px
(18.9MB)
Credit
Mary Evans / Natural History Museum
Source
Photograph from the Natural History Museum Collection
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Ammonite Ammonitida Ammonoid Ammonoidea Cephalopod Cephalopoda Coil Fossilised Mollusc Mollusca Mollusk Phanerozoic Ribbed Ribbing
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