Search Results - "Boucot, A."

Facies patterns and geography of the Yangtze region, South China, through the Ordovician and Silurian transition by Xu, Chen, Jia-yu, Rong, Yue, Li, Boucot, A.J.

“…Lithofacies and biofacies changes through the Ordovician and Silurian transition on the Yangtze platform are coincident with stepwise mass extinctions,…”
Get full text

Evidence of intestinal parasites of dinosaurs by Poinar, Jr, G, Boucot, A J

“…Protozoan cysts and helminth eggs preserved in a coprolite from the Early Cretaceous Bernissart Iguanodon shaft in Belgium demonstrate that representatives of…”
Get more information

A critique of Phanerozoic climatic models involving changes in the CO2 content of the atmosphere by Boucot, A.J., Gray, Jane

“…In general, Earth's atmosphere is predicted to have changed over the past 3 billion years from a hot, CO2-rich, low-oxygen atmosphere to the comparatively low…”
Get full text

Fossil plankton depth zones by Boucot, A.J., Chen, Xu

“…Varied evidence from the known depth correlated distribution of benthic shelly facies communities in the Ordovician and Silurian clearly shows that graptolite…”
Get full text

Paleozoic paleogeography and biogeography by Boucot, A. J.

“…An attempt is now being made to reconcile the data of Paleozoic climatically sensitive sediments, such as evaporites, coals, and bauxites, with the…”
Get full text

So-called background extinction rate is a sampling artifact by Boucot, A.J.

“…Critical examination of the assumptions underlying the concept of so-called background extinction rate indicates that it largely represents a sampling…”
Get full text

The classification of athyridid brachiopods by Alvarez, Fernando, Jia-Yu, Rong, Boucot, A. J.

“…Phylogenetic relationships among higher taxa of articulate brachiopods that developed a spiralium as mineralized support for the lophophore, and the resulting…”
Get full text

Evaporitic constraints on the southward drifting of the western Gondwana margin during Early Cambrian times by Álvaro, J.J., Rouchy, J.M., Bechstädt, T., Boucot, A., Boyer, F., Debrenne, F., Moreno-Eiris, E., Perejón, A., Vennin, E.

“…Lower Cambrian evaporites and carbonates are reported from nearly all the platforms of the western Gondwana margin, which comprises the Souss, Ossa–Morena,…”
Get full text

NAMURIAN FOSSILS (BRACHIOPODS, GONIATITES) FROM SATUN PROVINCE, SOUTHERN THAILAND by WONGWANICH, THANIS, BOUCOT, A. J, BRUNTON, C. H. C, HOUSE, M. R, RACHEBOEUF, P. R

“…A previously unknown Namurian goniatite and brachiopod fauna is described from Southeast Asia. The goniatites provide new insights into their global…”
Get full text

Ontogeny of Stringocephalus gubiensis and the origin of Stringocephalus by Sun, Y. L., Boucot, A. J.

“…A growth series of Stringocephalus gubiensis, described here, reveals that the cardinal process of Stringocephalus originated from a bilobate structure, and…”
Get full text

A global review of the Virgianidae (Ashgillian-Llandovery, Brachiopoda, Pentameroidea) by Jia-Yu, Rong, Boucot, A. J.

“…A review of the Late Ordovician, chiefly mid-Ashgillian, to Early Silurian, Llandoverian, pentameroidean brachiopods, the Virgianidae, permits them to be…”
Get full text

HETEROCHRONY IN STRINGOCEPHALUS by BALINSKI, ANDRZEJ, YUANLIN, SUN, BOUCOT, A. J

“…Sun Yuanlin and A. J. Boucot described the ontogenetic development of several important morphologic structures in Stringocephalus gubiensis, which occurs in…”
Get full text

Early Devonian brachiopods from Satun Province, southern Thailand by Boucot, A. J., Cocks, L. R. M., Racheboeuf, P. R.

“…Twelve brachiopod taxa are described from the Early Devonian (probable early Emsian) Pa Samed Formation of southern Thailand, including the new genus and…”
Get full text

Origin and early radiation of terebratuloid brachiopods: thoughts provoked by Prorensselaeria and Nanothyris by Boucot, A. J., Wilson, R. A.

“…The ontogenies of Prorensselaeria and Nanothyris, described here for the first time, suggest that Cloud's Dielasmatidae are closely affiliated phylogenetically…”
Get full text

The jugum and salinity tolerance of Greenfieldia (Brachiopoda: Late Silurian) by Boucot, A. J., Alvarez, Fernando, Leibold, Arthur

“…While preparing the part of the Treatise on Invertebrate Paleontology dealing with Greenfieldia, Alvarez had problems with the absence of information regarding…”
Get full text

Geniculigypa, a new gypidulid (Brachiopoda) genus from the Middle Devonian of Michigan by Blodgett, Robert B., Boucot, A. J.

“…A new genus, Geniculigypa, and a new subfamily, the Geniculigypinae, are established. Both taxa are monotypic and have as their type species, Sieberella…”
Get full text

Color pattern on a martiniid brachiopod from South China by Sun, Y. L., Boucot, A. J., Blodgett, R. B., Ran, W. Z.

“…More than 70 species of Paleozoic articulate brachiopods with color patterns have been reported in the literature (see Blodgett et al., 1983, table 1; Table…”
Get full text

Quadriloba, new name for the genus Tetraloba Alvarez, Rong, and Boucot, 1998 (Brachiopoda, Athyridida); preoccupied by Tetraloba Lee, 1983 (Insecta, Collembola) by Alvarez, Fernando, Jia-Yu, Rong, Boucot, A. J.

“…John K. Page, Chief of the Production Section of the Zoological Record has kindly informed us (personal commun., 16 November 1998) that the generic name…”
Get full text

Devonian brachiopods from northern Chile by Boucot, A. J., Bahlburg, Heinrich, Breitkreuz, Christoph, Isaacson, Peter E., Niemeyer, Hans, Urzua, Felipe

“…Fossiliferous marine Devonian has been known in Chile for less than a decade. The initial discovery from south of the Salar de Atacama region, in the Sierra de…”
Get full text

A Paleozoic Pangaea by Boucot, A. J., Gray, Jane

“…Paleozoic paleogeographies should be consistent with all available, reliable data. However, comparison of three different Devonian paleogeographies that are…”
Get full text