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ANAGENETIC EVOLUTION OF THE EARLY TITHONIAN AMMONITE GENUS SEMIFORMICERAS TESTED WITH CLADISTIC ANALYSIS |
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| Authors: | FABRIZIO CECCA ISABELLE ROUGET |
| Affiliation: | Université'Pierre et Marie Curie'–Paris VI, CNRS-UMR 5143 'Paléobiodiversitéet Paléoenvironnements'. Case 104 - 4, place Jussieu, 75252 Paris Cedex 05, France;e-mails:; |
| Abstract: | |
| Keywords: | Jurassic Ammonoidea Oppeliidae phylogeny cladistics evolution fossil record |