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A faunal succession based on ammonoids is established for the Late Hettangian to Early Sinemurian interval in the Western Cordillera, United States. The faunal sequence consisting of one zone and four informal biochronologic units termed assemblages is given as follows: Paracaloceras morganense assemblage, Badouxia oregonensis assemblage, Canadensis Zone, Metophioceras trigonatum assemblage and Coroniceras...
Western North America has one of the most extensive fossil records of Late Triassic dinosaurs. AllUpper Triassic strata are assigned to the Chinle Group which yields four successive, dinosaur-bearing faunas. Otischalkian (early Tuvalian) dinosaur specimens are fragmentary and indeterminate. Adamanian (late Tuvalian) dinosaurs include a herrerasaurid, Camposaurus arizonensis nov. gen. et sp., Caseosaurus...
The Lower Devonian genus VlastaBarrande, 1881 (Vlastinae, Antipleuridae) represents the oldest known bivalve with a sinistrally twisted shell, that relates to a shallow endobyssate mode of life in unstable biodetrital sediment. Detailed study shows that the shells lacked the gapes described by Barrande in the last century. The subfamily Vlastinae, originally established for Lower Paleozoic Bivalvia...
Late Pleistocene Equus from Japan is represented by true horses, not by Asiatic asses. The taxonomicstatus of the finds is supported not only by their dental morphology, but by the distribution on the Asiatic continent, the source of Equus in Japan, and the ecology of these equids.
Différentes formes de Nothofagidites des types fusca et brassii ont été identifiées dans l'île du Roi Georges (îles Shetland du Sud) dans des sédiments paléogènes. Elles sont associées à une microflore riche en fougères, Podocarpaceae, Araucariaceae, Proteaceae, et Gunneraceae. L'étude comparative entre les pollens actuels et fossiles (microscope optique et à balayage) a permis d'établir des affinités...
Description de quatorze taxons de brachiopodes, provenant du Sud du bassin d'Illizi (Sahara algérienoriental). Ces faunes, probablement d'âge givétien supérieur, ont des affinités marquées avec celles des bassins de Rhadamès et de Mourzouk, Libye occidentale, datées du Givétien supérieur-Frasnien inférieur. Leur présence confirme l'existence de dépôts marins à cette époque dans cette partie du bassin...
A new Lower Pliocene crustacean assemblage is recorded in the southwestern region of the IberianPeninsula. This assemblage is of very low diversity, being represented almost exclusively (96%) by specimens of Goneplax gulderiBachmayer, 1953 of the family Goneplacidae. Other families represented are Callianassidae (Callianassa sp.), Laomediidae (Jaxea cf. nocturnaNardo, 1847) and Calappidae (Calappa...
Two ctenodactyloid rodents, Fallomus razaeFlynn, Jacobs & Cheema and F. ladakhensis nov. sp., arebeing described from the Kargil Formation of the Ladakh Molasse Group of Kargil area. Fallomus (? Chapattimyidae) is considered an endemic offshoot of the South Asian Eocene ctenodactyloid stock. The new species is relatively larger and more hypsodont with an ectostylid borne on a separate pillar....
Ferralsia is known from the southern side of the Montagne Noire (France), the Görlitz Synclinorium(Germany), and the Ossa-Morena zone (Iberian Peninsula). The finding of Ferralsia saxonica in the reference section of the Marianian stage (a Lower Cambrian chronostratigraphic unit of the Iberian Peninsula) allows us to consider it as a potential taxon for correlation within the Cambrian Mediterranean...
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