Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Leo J. Hickey"'
Autor:
Leo J. Hickey, Richard F. Yuretich
Publikováno v:
The Mountain Geologist. 53:259-281
A 400 m-thick sequence characterized by prominent tabular sandstone beds and a significant amount of marl and limestone occurs in Paleocene strata of the northern part of the Bighorn Basin (Clarks Fork Basin) of Wyoming and Montana. These strata, cur
Autor:
Daniel J. Peppe, Leo J. Hickey
Publikováno v:
Bulletin of the Peabody Museum of Natural History. 55:171-189
Six fossil leaf species are described from impression fossils collected from the Paleocene Fort Union Formation in the Williston Basin in southwestern North Dakota, USA. They are Meliosma vandaelium sp. nov., Meliosma thriviensis sp. nov., Ternstromi
Publikováno v:
American Journal of Science. 311:608-631
We report on a new genus and species of silicified wood from a locality in the Town of Southbury, Connecticut, on the southwestern margin of the Pomperaug basin, a western outlier of the Hartford basin. Although the material occurs as float, there is
Autor:
Ian M. Miller, Leo J. Hickey
Publikováno v:
Bulletin of the Peabody Museum of Natural History. 51:3-96
The Winthrop Flora is of middle to late Albian age (Early Cretaceous) and occurs in the Methow basin of north-central Washington State, USA. With an estimated diversity of more than 150 species, the Winthrop is the most diverse flora yet described fr
Publikováno v:
American Journal of Botany. 97:438-445
Many key aspects of early angiosperms are poorly known, including their ecophysiology and associated habitats. Evidence for fast-growing, weedy angiosperms comes from the Early Cretaceous Potomac Group, where angiosperm fossils, some of them putative
Autor:
Ian M. Miller, Leo J. Hickey
Publikováno v:
Bulletin of the Peabody Museum of Natural History. 49:135-180
A diverse fossil flora of middle to late Albian age occurs in the upper half of the Winthrop Formation of the Methow basin in north-central Washington State, USA. The formation represents a transition from marine to terrestrial conditions within what
Publikováno v:
Bulletin of the Peabody Museum of Natural History. 49:181-208
We describe 28 fossil plant morphotypes from the Aspen Shale flora (Cretaceous: middle to late Albian) in southwestern Wyoming. This impression flora includes 6 ferns, 1 sphenopsid, 2 conifers, 17 dicotyledonous angiosperm (dicot) leaves and 2 dicot
Autor:
Linda S. Klise, Leo J. Hickey
Publikováno v:
Bulletin of the Peabody Museum of Natural History. 48:255-259
Shoots and branches of Metasequoia have proven notoriously difficult to preserve in herbarium collections because of the abscission of the needles on drying. In the course of preparing an exhibit, the Yale Peabody Museum of Natural History's Division
Publikováno v:
Journal of Paleontology. 81:550-567
Seven fossil leaf species are described from impression fossils collected from the Upper Cretaceous (Maastrichtian) Fox Hills Formation in south-central North Dakota, USA. They are Marmarthia johnsonii n. sp., Nilssoniocladus yukonensis n. comb., Nil
Autor:
Steven R. Manchester, Leo J. Hickey
Publikováno v:
International Journal of Plant Sciences. 168:229-249
We recognize a new genus of Nyssaceae on the basis of abundant foliage and reproductive remains from the Paleocene of North America. Browniea gen. n. is known from leaves, inflorescences, and fruits co‐occurring in at least 30 sites in Wyoming, Mon