. Bulletin of the Natural Histort Museum. Geology series. . to Fig. 4 Composite stratigraphic section of tlie Maastrichtian of the Basque region from Zumaia. Gipuzkoa, Spain to Bidart. Pyrenees-Atlantique, France (from Ward & Kennedy 1993) showing the distribution of echinoids. pioneering work of Seunes (1888a, 1888b and 1889). He reported the occurrence of Cidaris beaugeyi Seunes, Jeronia pyrenaica Seunes, Coraster beneharnicus Seunes, Echinocorys douvillei Seunes, Stegaster heberti Seunes, S. bouillei Cotteau, Gibbaster munieri Seunes [=Tholaster munieri (Seunes)] and Galeaster bertrandi
. Bulletin of the Natural Histort Museum. Geology series. . to Fig. 4 Composite stratigraphic section of tlie Maastrichtian of the Basque region from Zumaia. Gipuzkoa, Spain to Bidart. Pyrenees-Atlantique, France (from Ward & Kennedy 1993) showing the distribution of echinoids. pioneering work of Seunes (1888a, 1888b and 1889). He reported the occurrence of Cidaris beaugeyi Seunes, Jeronia pyrenaica Seunes, Coraster beneharnicus Seunes, Echinocorys douvillei Seunes, Stegaster heberti Seunes, S. bouillei Cotteau, Gibbaster munieri Seunes [=Tholaster munieri (Seunes)] and Galeaster bertrandi Seunes from the vicinity of Bidart. The Navarra region This has the most complicated geology of the three regions, being strongly affected by strike-slip faulting. Maastrichtian deposits are represented by two facies: shelf platform carbonates (studied at Olazagutia Pass) and shelf basinal mudrocks (studied at Larumbe andSarasate)(Fig. lb). Table I lists the echinoids collected from this region. The overlying Danian and early Thanetian consist of a sequence of coccolith limestones that in places includes reworked pebble beds. Table 1 Echinoids from the Navarra district (see Fig. lb for map of area). LOCALITY 1. Maastrichtian, carbonate platform facies; Olazagutia Pass. Tylocidaris (Sardocidaris) ramondi (Leymerie) cidaroid plates indet. Salenia (Pleurosalenia) maastrichtensis Schluter Conulus gigas (Cotteau) Echinogalerus muelleri (Schluter) Nucleopygus scrobicidatus (Goldfuss) Offaster leymeriei Cotteau Hemipneustes pyrenaicus Hebert Hemipneustes striatoradiatus (Leske) Hemiaster koninckanus d"Orbigny Hemiasterprunella (Lamarck) Cyclaster sp. LOCALITY 2. Late Thanetian, Casas de Oraien. Gauthieriapseudomagnifica (Cotteau) Adelopneustes ernsti sp. nov. Cardiaster sp. haster aquitanicus (de Grateloup) Echinocorys scutata forma cotteaui Lambert Micrasler tercensis Cotteau Hemiaster stella (Morton) Linthia sp. Cotteau LOCALITY 3. Danian-early Thanetian at Larumbe. Coraster v
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