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| View Original: | Ammonites growthlines.PNG (720x960) | |||
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| Keywords: Ammonites growthlines.PNG en examples of growthlines in ammonites Left real examples; a Puzosia Cretaceous ; b Calliphylloceras Early Jurassic ; c Ptychophylloceras Late Jurassic Right schematic examples of ammonites with different number of growthlines per whorl Own Antonov 2009-02-21 Puzosia Desmoceratoidea fossils Calliphylloceras Phylloceratina fossils Ptychophylloceras | ||||
