摘要:

The new conodontWebbygnathus munusculumgen. et sp. nov. is described from Eastonian (early Late Ordovician) strata from the central part of the Parkes Zone of the Lachlan Fold Belt and the New England Fold Belt in New South Wales. In the type area south of Gunningbland, central New South Wales, the genus occurs associated with macrofossils of the coral/stromatoporoid assemblage Fauna II (early Eastonian or Ea2); in the New England region it has been obtained from strata on both sides of a major structural feature, the Peel Fault, the associated conodont assemblages indicating an age equivalent to that of coral/stromatoporoid assemblage Fauna III or late Eastonian (Ea3). The apparatus of this species, as presently known, comprises two pectiniform elements, one stellate with a four-rayed basal cavity, the other fundamentally pastinate, with a three-rayed basal cavity.

ISSN:0311-5518    

DOI:10.1080/03115510008619206

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Trilobites are common faunal elements in the Melbourne Formation, a unit of early Ludlow (uppernilssoniBiozone) age, which crops out extensively in the Darraweit Guim Province of the Melbourne Zone, central Victoria. New diagnoses are given for species previously described, includingMaurotarion euryceps(McCoy, 1876; =Cyphaspis spryiGregory, 1901),Raphiophorus jikaensis(Chapman, 1912; =Ampyx yarraensisChapman, 1912),Cromus simpliciculus(Talent, 1964),Cromus spryi(Chapman, 1912),Sthenarocalymene kilmorensis(Gill, 1945; =Gravicalymene heteraGill, 1945) andTrimerus harrisoni(McCoy, 1876). A new phacopid genus,Orygmatosis described, represented by the speciesO. yanyeanigen. et sp. nov. Other species newly described includeCromus melbournensissp. nov.,Arcticalymene australissp. nov.,“Ananaspis” woiwurrungisp. nov. andKettneraspis hollowayisp. nov.

ISSN:0311-5518    

DOI:10.1080/03115510008619207

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Foraminiferal assemblage from Permian rocks of Eastern Himalaya, India are recorded for the first time. Twenty-two genera and twenty-eight species are documented from the Garu Formation, Eastern Himalaya. The foraminiferal assemblage supports previous age determinations based on megafauna. The distinctive foraminiferal assemblage from India supports the recognition of Australian and Afghanistan-Indian provinces in the Early Permian Austral realm. An appreciable number of common species in these provinces is indicative of close geographic links.

ISSN:0311-5518    

DOI:10.1080/03115510008619208

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

A review is undertaken of the nine species ofProcytheruraknown to occur in Argentina and a new species,Procytherura serangodessp. nov. is described. The global distribution of the genus indicates that it was more or less equally diverse and widely distributed in both hemispheres during most of the Lower and Middle Jurassic, but that in the Upper Jurassic and in the Lower Cretaceous, it became progressively restricted to the Southern Hemisphere. The widespread distribution of several Jurassic species ofProcytherura, which occur in both Great Britain and Northwest Europe and in Argentina, is shown to be related to the availability of important migration routes, including the Tethys and the Hispanic Corridor. In the Lower Cretaceous, the very widespread distribution ofProcytherurain the Southern Hemisphere, is used to support the existence of important routes along the eastern and western seaboards of Africa, the latter associated with the opening of the South Atlantic.

ISSN:0311-5518    

DOI:10.1080/03115510008619209

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

A new species of fossil wood is described,Bridelioxylon canningenseBamford & McLoughlin, belonging to the Phyllanthoideae group of the Euphorbiaceae. The woods occur in indurated sandstones and conglomerates preserved in palaeochannels incised into the Upper Permian Condren Sandstone in the Landrigan Cliffs, northern Canning Basin, Western Australia. Based on the presence of the dicotyledonous woods and the geomorphological setting of the palaeochannel, a Palaeogene age is suggested for the host rocks. This is the first record of fossil euphorbiacean wood in Australia; pollen has been previously recorded. The fossil wood is most closely comparable to extant members ofBrideliathat currently occupy the warmer and wetter parts of Australia.

ISSN:0311-5518    

DOI:10.1080/03115510008619210

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor