Ammonoidea


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Ammonoidea

[‚a·mə′nȯid·ē·ə]
(paleontology)
An order of extinct cephalopod mollusks in the subclass Tetrabranchia; important as index fossils.
References in periodicals archive ?
On Upper Albian Ammonoidea from Portuguese East Africa, with an appendix on Upper Cretaceous ammonites from Maputoland.
Etude particuliere de la famille des Heteroceratina Spath, 1922 (Ancyloceratina, Ammonoidea).
(1995): Bioestratigrafwypaleontologia (Ammonoidea) del Oxfordiense medio (Biozona Bifurcatus) al Sur de Zaragoza (Cordillera Iberica nororiental).
(1986): El Toarciense en el sector comprendido entre La Almunia de Dona Godina y Ricla (Provinicia de Zaragoza) Paleontologia (Ammonoidea) y bioestratigrafia.