Ammonite selection
Three ammonites as follows: (Left to right) Oistoceras wrighti; Asteroceras obtusum (zonal index species); Tragophylloceras loscombi all specimens originate from the Jurassic rocks near Lyme Regis, England.
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Photo credit: © Natural History Museum, London / Alamy / Afripics
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Keywords: ., ammonite, ammonoid, ammonoidea, animal, arietitidae, asteroceras, britain, buoyancy, cephalopod, cephalopoda, chamber, coil, dorset, england, europe, great, invertebrata, invertebrate, jurassic, kingdom, lyme, mesozoic, mollusc, mollusca, mollusk, oistoceras, phanerozoic, prehistoric, prehistory, rough, selection, smooth, suture, tragophylloceras, uk, united
