An ammonite with shell trauma from the Aptian (Lower Cretaceous) of the state of Durango, northern Mexico
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Abstract
For the first time, a Lower Cretaceous ammonite with a trauma on the flank is reported in Mexico. We compare the trauma of the Mexican specimen with the most similar typologies through an accurate analysis of the most important papers about injuries in ammonites. This allows us to identify the particular type of injury and its possible origin. The studied sample is assigned to the forma verticata Rippenscheitelung, which is related to injuries that damage the shell mantle.
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