Remarks on relative phenotype stability in two Tithonian ammonite species first described from the Tunisian Dorsale - a preliminary approach to interpreting metapopulation dynamics in ammonites

摘要

Two rare ammonite species are recorded and illustrated for the first time front the Tithonian of Tunisia: Simocosmoceras cf. adversum (OPPEL) and Micra-canthoceras (Corongoceras) symbolum carthaginoustensis n. subsp. These records are interpreted in the ecological context of metapopulation dynamics.