Photograph of the ammonite Asteroceras obtusum taken by Dlloyd. The specimen is from the Jurassic Lower Lias Formation, Obtusum Zone. Locality - Lyme Regis, Dorset, England. Complete calcified specimen, measuring 11.5 cm (4.5") in diameter, in limestone matrix.
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|current||21:15, 20 January 2007||300 × 225 (31 KB)||Rick Swarts||[http://en.wikipedia.org/wiki/Image:Ammonite_Asteroceras.jpg source and rights]|