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1.- DIACHRONOUS CALPIONELLID BIOZONES BETWEEN MEXICO AND SOUTHERN EUROPE AND THEIR IMPACT ON THE DEFINITION OF THE JURASSIC-CRETACEOUS BOUNDARY GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 1996 GEOLOGICAL SOCIETY OF AMERICA, 28TH ANNUAL MEETING Ver registro
2.- NEW DATA FROM NORTH AMERICA ON THE PLACEMENT OF THE JURASSIC-CRETACEOUS BOUNDARY UNESP, IGCE, DEPARTAMENTO DE GEOLOGIA SEDIMENTAR; RIO CLARO; BRA; BRAZIL, 1996 BOLETIM DO 4 (SUPER O) SIMPOSIO SOBRE O CRETACEO DO BRASIL ;BULLETIN FROM THE FOURTH SYMPOSIUM ON THE CRETACEOUS OF BRAZIL Ver registro
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