1,721,059 research outputs found
Le faune a gasteropodi della regione intratetisiana del Giurassico Medio (Bajociano): caratteristiche e ipotesi sulla loro differenziazione
No full textThin shelled bivalves from the Jurassic Rosso Ammonitico and Calcari a Ponidonia Formation of the Umbrian-Marchean Apennine (Central Italy)
No full textJurassic discohelicid gastropods from the Reatini mountains (Central Apennines, italy) and their stratigraphical significance
No full textConsiderazioni sul significato paleoclimatico e geodinamico di una serie lacustre pleistocenica inferiore presso Tavernalle (Perugia, Umbria)
No full textA Middle Jurassic bivalve and gastropod fauna from Umbria (Central Italy)
No full textFossil bivalves and gastropods originating from a neptunian dike infilling are described from Central Italy. The fauna of Middle Jurassic age is composed of hundred of specimens. Among them we acknowledged 26 species from 19 genera. Parallelodon apenninicus, P. carsulanus and P. maxiai among bivalves are described as new. Among the gastropods the following new genera and species are erected: Proconulus (Laeviconulus) keratomorphus, Odoardia, O. prosornata, Fischeriella, F. umbra, Naticopsis (Marmolatella) esui, Neritoma (Neridomus) riettii, Crossostoma macerinoi, Planicollonia, P. macrostoma, Allocosmia geometrica. The family Crossostomatidae Cox, 1960 is also emended
Considerazioni stratigrafiche e paleoecologiche sui "livelli a Posidonia" (Auct.) dell'Appennino umbro-marchigiano
No full textIl Villafranchiano del "lago Tiberino", ramo Sud occidentale. Schema stratigrafico e tettonico
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