Berriasian Stage of the Crimean Mountains: Zonal subdivisions and correlation

Upper Berriasian ammonites from the Taraises Formation of Cuencamé de Ceniceros section, Durango State, Northern Mexico

“…The range of Fauriella boissieri is upper Berriasian (Fauriella boissieri Zone) to lowermost Valanginian. This species has been reported in France (Mazenot, 1939;Le Hégarat, 1973), Spain (Tavera, 1985;Company, 1987), Austria Bujtor et al, 2013), Crimea (Arkadiev, 2007;Arkadiev et al, 2008), Hungary (Főzy et al, 2010), Bulgaria (Nikolov, 1966), Italy (Faraoni et al, 1997), the Alps (Immel, 1987), Morocco (Wippich, 2001), Papua New Guinea (Matsumoto and Skwarko, 1993) and Madagascar (Collignon, 1962 fig. 9C.…”

“…This species has strong biostratigraphic significance because it is restricted to the upper Berriasian, in particular to the upper part of the Fauriella boissieri Zone (Tirnovella alpillensis and Thurmanniceras otopeta subzones). The taxon has been reported from France (Mazenot, 1939;Le Hégarat, 1973), Spain (Company, 1982;Tavera, 1985), Bulgaria (Nikolov, 1982), Poland (Pszczól-kowski and Myczynski, 2004), Crimea (Arkadiev et al, 2008), Austria (Vašíček et al, 1999;Bujtor et al, 2013;Boorová et al, 2015), Hungary (Főzy et al, 2010), Madagascar (Collignon, 1962), Mexico (Burckhardt, 1910(Burckhardt, , 1919 and Argentina (Leanza and Wiedmann, 1989 fig. 4.…”

Systematic palaeontology of the Perisphinctoidea in the Jurassic/Cretaceous boundary interval at Le Chouet (Drôme, France), and its implications for biostratigraphy

“…This issue is crucial because it has direct implications for the biostratigraphy of the middle Berriasian and the identification of the index species, T. occitanica (Pictet, 1867). In recent years, Bogdanova et al (1999) and Arkadiev et al (2008) have assumed that T. occitanica occurs in Crimea, based on the re-description of all the historical specimens described as Hoplites occitanicus by Retowski (1893, pl. 12, figs 7-9).…”