Ordovician chitinozoan zonation of Quebec and western Newfoundland

1989 ◽  
Vol 63 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Aicha Achab

The purpose of this paper is to propose a chitinozoan zonation of the Ordovician of Quebec and western Newfoundland. On the basis of chitinozoan assemblages previously described from various sections, covering almost the entire Ordovician System, 22 biozones, based on first appearance of index species, are distinguished. As the strata from which the chitinozoan microfaunas were extracted are well dated by other fossils, especially graptolites, it is possible to establish a correlation between the chitinozoan and the established graptolite and conodont zonations of North America and Great Britain.

1873 ◽  
Vol 10 (111) ◽  
pp. 385-395 ◽  
Author(s):  
T. Sterry Hunt

It is proposed in the following pages to give a concise account of the progress of investigation of the lower Palæozoic rocks during the last forty years. The subject may naturally be divided into three parts: 1. The history of Silurian and Upper Cambrian in Great Britain from 1831 to 1854; 2. That of the still more ancient Palæozoic rocks in Scandinavia, Bohemia, and Great Britain up to the present time, including the recognition by Barrande of the so-called primordial Palæozoic; fauna; 3. The history of the lower Palæozoic rocks of North America.


2005 ◽  
Vol 97 (1) ◽  
pp. 162-163
Author(s):  
Michael Heinrich
Keyword(s):  

Author(s):  

Abstract A new distribution map is provided for Cronartium ribicola J.C. Fischer. Hosts: Pinus and Ribes. Information is given on the geographical distribution in ASIA, China (Shensi), India (N.W.), Iran, Japan, Korea, Nepal, Pakistan, Taiwan, USSR (Siberia), EUROPE, Austria, Belgium, Great Britain and Northern Ireland, Czechoslovakia, Denmark, Finland, France, Germany, Hungary, Irish Republic, Italy, Netherlands, Norway, Poland, Romania, Spain, Sweden, Switzerland, USSR (Tranzschel; Kuprevich & Tranzschel loc. cit.), (Ukraine), Yugoslavia, NORTH AMERICA, Canada, USA.


Author(s):  

Abstract A new distribution map is provided for Meria laricis Vuill. Hosts: Larch (Larix). Information is given on the geographical distribution in ASIA, USSR, AUSTRALASIA & OCEANIA, New Zealand, EUROPE, Austria, Czechoslovakia, Denmark, France, Germany, Great Britain, Irish Republic, Italy, Netherlands, Norway, Poland, Sweden, USSR (Ukraine, Byelorussia, Estonia, Latvia, Mori and Tatar ASR, Moscow, Leningrad and Voronezh), NORTH AMERICA, Canada (B.C.), United States (Pacific N.W.) (Idaho).


Author(s):  
T. V. Andrianova

Abstract A description is provided for Mycosphaerella oxyacanthae, which sometimes causes lesions on leaves of Crataegus laevigata. Some information on its dispersal and transmission and conservation status is given, along with details of its geographical distribution (North America (USA), Asia (Armenia, Azerbaijan, China, Georgia, India, Iran, Kazakhstan, Kirgizstan [Kyrgyzstan], Russia, Turkey, Turkmenistan, Uzbekistan), Europe (Austria, Belgium, Bulgaria, Czech Republic, Denmark, France, Germany, Great Britain, Hungary, Italy, Latvia, Norway, Portugal, Romania, Russia (Astrakhan oblast, Kursk oblast, Saratov oblast, Stavropolskyi krai, Voronezh oblast), Sweden, Switzerland and Ukraine)) and hosts (Phoma macrostoma, Crataegus ambigua, C. beckeriana, C. chlorocarpa, C. curvisepala [syn. C. kyrtostyla], C. laevigata [syn. C. oxyacantha], C. macracantha, C. microphylla, C. mollis, C. monogyna, C. pinnatifida, C. remotilobata, C. sanguinea, C. songarica [C. songorica], C. volgensis, and Crataegus sp.).


Author(s):  
S. Diamandis

Abstract A description is provided for Rhizosphaera pini. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Abies balsamea, A. cephallonica, A. fraseri, A. grandis, A. pectinata, A. veitchii, Pinus sp., Tsuga diversifolia, also possibly Picea abies. DISEASE: Needle blight of firs. GEOGRAPHICAL DISTRIBUTION: Asia (Japan), Europe (Austria, Czechoslovakia, France, Germany, Great Britain, Greece, Italy), North America (Canada, USA). TRANSMISSION: Not known.


Author(s):  
D. Brayford

Abstract A description is provided for Cylindrocarpon olidum var. olidum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Wide range. At IMI there are records on: Asparagus, Camellia, Cocos, Cordylina, Heterodera (nematode), Medicago saliva, Narcissus, Pelargonium, Picea, Pinus, Pyrus, Secale, Solanum.DISEASE: Root rotting. GEOGRAPHICAL DISTRIBUTION: Africa: Ghana, Zimbabwe; Australasia: Australia; Europe: Germany, Great Britain; North America: Canada, Honduras, USA. TRANSMISSION: Soil-borne; slimy spores are probably spread by water.


Author(s):  
D. N. Pegler

Abstract A description is provided for Phellinus igniarius. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Common on the trunks of Salix and Populus, also recorded on Acer, Arbutus, Arctostaphylos, Betula, Carpinus, Castanopsis, Cornus, Erythropheum, Fagus, Fraxinus, Juglans, Ostrya, Pericopsis, Prunus, Pyrus, Quercus, Rhamnus and Ulmus. DISEASE: White heart rot. Causing a destructive decay of the general delignifying type. The decayed area becomes soft and white, bounded by conspicuous dark zones or black lines with an irregularly concentric arrangement. GEOGRAPHICAL DISTRIBUTION: Africa (Eritrea, Madagascar, Zambia); Asia (Japan, U.S.S.R.); Europe (Bulgaria, Czechoslovakia, Germany, Great Britain, Hungary, Netherlands, Norway, Rumania, Sweden); North America (Canada, U.S.A.); Central America (Nicaragua, Venezuela). TRANSMISSION: By airborne spores, which are continuously produced from early spring until late autumn when the temperature drops below 5°C (Riley, 1952). Spores remain viable for several months under field conditions (Iverson, 1968). Infection occurs mainly through branch wounds.


Sign in / Sign up

Export Citation Format

Share Document