The Red Bird section of the Pierre Shale in eastern Wyoming contains a relatively complete sequence of fine-grained marine clastics that were deposited between 81 and 69 million years ago in the Late Cretaceous epicontinental seaway of the US Western Interior. These units not only contain a well-studied, high-resolution ammonite biostratigraphic sequence, by which the far-flung exposures of the...

A systematic account of crinoids from the Upper Coniacian-Lower Campanian of the southwestern margin of the Holy Cross Mountains in southern Poland is presented. Seven crinoid taxa [Marsupites testudinarius (von Schlotheim), Bourgueticrinus ellipticus (Miller), Bourgueticrinus sp., I.? granosus Valette, Isocrinus? sp., Nielsenicrinus carinatus Roemer and Austinocrinus bicoronatus (von Hagenow)]...

A distinctive feature of the major eudicot diversification that occurred through Late Cretaceous is unequivocal presence Cornales and diverse Ericales. Here we describe well-preserved fossil flowers from Mira locality in western Portugal, Campanian-Maastrichtian age, assign to a new extinct genus Ericales with two species; Miranthus elegans gen. et sp. nov. kvacekii The are pedicellate, structu...

Hadrosaurid (duck-billed) dinosaur bonebeds are exceedingly prevalent in upper Cretaceous (Campanian–Maastrichtian) strata from the Midwest of North America (especially Alberta, Canada, and Montana, U.S.A) but less frequently documented more northern regions. The Wapiti Formation northwestern Alberta is a largely untapped resource terrestrial palaeontological information missing southern due to...

Both partially articulated specimens and dissociated marginal ossicles form the basis for erection of two new species Late Cretaceous goniasterids from Mons Liège-Limburg basins (Belgium) Hannover area (Germany). Chomataster breizh sp. nov., which recalls type species, acules Spencer, 1913, but differs in several respects, is based on a partial external mould frame disc arms flint (upper Campan...

Spherules in sediments across the Cretaceous-Tertiary (K/T) transition in Central America and the Caribbean are commonly interpreted as ejecta from the Chicxulub impact on Yucatan. Their stratigraphic ages, however, are variable spanning from the late Maastrichtian to the early Danian. Figure 1. Locations of spherule-bearing K/T boundary sections in Central America, and the Caribbean. In northe...