Results 191 to 200 of about 1,726,480 (235)

Palaeobiogeography of Famennian (Late Devonian) bryozoans

Palaeogeography, Palaeoclimatology, Palaeoecology, 2010
Abstract Bryozoans were widely distributed in marine habitats of the Famennian (Late Devonian) worldwide. This time interval was marked by gradual change in taxonomic composition of bryozoan faunas, which were insignificantly affected by global events (Upper Kellwasser, Handerberg). Distribution of bryozoan faunas was controlled by intrinsic factors (
Zoya Tolokonnikova, Andrej Ernst
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Biogeography of Late Silurian and Devonian acritarchs and prasinophytes

Review of Palaeobotany and Palynology, 1997
Abstract The palaeobiogeography of Late Silurian-Devonian acritarch and prasinophyte microfloras is assessed using qualitative data, similarity indexes and cluster analysis. Based on the recent palaeogeographic reconstructions, the northwards movement of Gondwana initiated during the Ludlovian with the progressive narrowing of the Rheic ocean ...
Alain le Hérissé, Rémy Gourvennec, Reed Wicander   +2 more
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Pseudoextinctions in late Devonian proetide trilobites

Historical Biology, 1994
Morphologically similar proetide trilobite genera occur in highest Devonian or lowest Carboniferous and in Middle Devonian strata, but are absent from the intervening Upper Devonian. The similarities have been accounted for either by true phyletic relationship, or by homoeomorphy.
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Microtektites and Mass Extinctions: Evidence for a Late Devonian Asteroid Impact

Science, 1992
Glass spherules, similar to microtektites, have been found near the Frasnian-Famennian boundary (F/F) (Upper Devonian) at Senzeilles, Belgium, contemporaneous with one of the largest marine mass extinctions of the Phanerozoic. These spherules exhibit a wide range of compositions and display teardrop, dumbbell, and compound morphologies analogous to ...
Claeys, Philippe, Casier, Jean-Georges, Margolis, Stanley V.   +2 more
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Late Devonian glaciation in South America

Palaeogeography, Palaeoclimatology, Palaeoecology, 1985
Abstract An ice age in Famennian (Late Devonian) time is documented by the presence of diamictites with striated, faceted and polished pebbles; rhythmites with dropstones; erratic boulders; and striated pavements and deformed sandstones. The glacigenic beds occur in three huge intracratonic basins (Solimoes, Amazonas and Parnaiba) and in one ...
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Some Late Devonian trilobites of China

1981
Late Devonian trilobites are here reported from three localities in China: (1) Daihua, Changshun County, Guizhou province; (2) Mianduhe, Hulun Buir Meng, Nei Mongol [Inner Mongolia], central part of Da Hingan [Great Khingan]; and (3) Hoxtolgay, West Junggar, Xinjiang.
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Late Devonian sphenopsid shows evidence of aquatic adaptations

Current Biology
Vascular plants diversified and adapted to various terrestrial environments during the Silurian and Devonian periods and had formed complex forests by the Middle and Late Devonian1. However, fossil evidence of functional adaptations to aquatic environments remains scarce, from forms with only submerged subterranean parts to fully submerged types ...
Le, Liu, Yi, Zhou, Pu, Huang, Min, Qin, Li, Liu, Peng, Xu, De-Ming, Wang   +6 more
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Insight into lingulid evolution from the Late Devonian

Alcheringa: An Australasian Journal of Palaeontology, 1977
Well preserved lingulids from near the base of the Mandagery Sandstone in the Late Devonian Hervey Group, N.S.W. are described as Apsilingula parkesensis gen. et sp. nov. The internal structures are better preserved than those of any previously described Palaeozoic lingulid and it has been possible to reconstruct the muscle system and to demonstrate a ...
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Late Devonian vertebrate fauna of the South Urals

Geobios, 1995
Abstract Vertebrate remains have been discovered in the Frasnian and Famennian of the South Urals The ichthyofaunacontains representatives of Phoebodus; Stethacanthus; Symmorium; Protacrodus as well as placoderms; acanthodians; “crossopterygians” dipnoans and palaoniscids. Changes of the fish assemblages are examined. A review of the occurrences of
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A review of in situ late Silurian and Devonian spores

Review of Palaeobotany and Palynology, 1980
Abstract Spores found in sporangia have now been recorded in the literature from sixty Late Silurian and Devonian macroplant species. A review study of these spores, together with an investigation of comparative dispersed spore genera and species, show interesting patterns of construction and sculpture within certain classes.
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