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Spinatrypa and Spinatrypina (Devonian Brachiopoda)

The Eifelian-Givetian (Middle Devonian) sediments of Germany contain a near-continuous suite of brachiopods belonging to the genera Spinatrypa Stainbrook 1951 and Spinatrypina Rzhonsnitskaya 1964. These two allopatric atrypid genera occupy different, mutually exclusive environments: the first is dominant in a brachiopod biotope, and the other is invariably associated with small thamnoporid or disphyllid corals. Several new taxa of limited vertical distribution are briefly described. These are Spinatrypa variaspina, S. aspera meridiana, S. globulina, S. curvirostra, S.

Chlamydophyllum, Iowaphyllum, and Sinospongophyllum (Rugosa) from the Devonian of New South Wales

The new species Chlamydophyllum minus and lowaphyllum cabonnense are described from the Lower Devonian Garra Formation of New South Wales. This is the first record of lowaphyllum from Australia. Sinospongophyllum tabulatum Hill, known from the Devonian limestones of Mt. Etna and Silverwood, Queensland, is also recorded from the Garra Formation. The correlation of these limestones with the Garra Formation is discussed; it is concluded that the three are representatives of an Eastern Australian faunal association of probable Emsian, and possible Early Eifelian age.

Palynology of the Springer Formation of southern Oklahoma, U.S.A.

Twenty-three surface samples were studied from the Springer formation at its exposure in Johnston County, Oklahoma. The Springer formation is of interest because of the commercial occurrence of oil and gas in its subsurface sandstones, but there has been wide disagreement as to its correct age. The microflora is transitional in character with Mississippian and Pennsylvanian spores represented, and it is regarded as a transgressional facies from the Mississippian Goddard formation to the Pennsylvanian Morrow formation in the area studied.

Graphical aids for the description and analysis of variation in fusuline foraminifera

The method of comparing characters of fusuline tests at particular volutions is discussed. A proposed new method uses the growth relation between individual characters and the diameter; spiral form is described separately. The method is illustrated by a study of intraspecific variation in Schwagerina anderssoni (Schellwien) from the Lower Permian of Spitsbergen and by an analysis of spiral form in the type species of some genera in the Schwagerina and Paraschwagerina-Pseudoschwagerina complexes.

The Upper Cambrian trilobite Irvingella nuneatonensis (Sharman)

Irvingella nuneatonensis (Sharman 1886), of which the complete dorsal exeskeleton is known, is redescribed, illustrated for the first time, and distinguished from other species. The ventral cephalic sutures and rostrum are like those of Dunderbergia (family Elviniidae). Three abnormally developed individuals are described. I. nuneatonensis comes from the upper part of the Zone of Olenus (above the base of the Subzone of Olenus dentatus) and its horizon is not below the upper part of the Elvinia Zone of the Upper Cambrian sequence in the U.S.A.

Spore assemblages and their stratigraphical application in the Lower and Middle Devonian of North and Central Vestspitsbergen

Rock samples were collected from numerous stratigraphically measured sections throughout the Lower and Middle Devonian of North and Central Vestspitsbergen. An assessment has been made of the stratigraphical value of the dispersed spore content from over 250 rock samples which were prepared for microscopic investigation. Absence of spores from Andree Land makes correlation less complete than was originally anticipated.
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