Archive

Critical reinvestigation of the aviculopectinid form 'Aucella' malayomaorica Krumbeck from the late Jurassic of the Indo-Pacific region indicates that it does not belong either to the genus Buchia (= Aucella) or to any other known aviculopectinid genus. A new genus Malayomaorica is erected to receive 'Aucella' malayomaorica.

• Read more about Malayomaorica gen. nov. (Family Aviculopectinidae) from the Indo-Pacific Upper Jurassic; with comments on related forms

• Read more about A rapid parallel grinding machine for serial sectioning of fossils

The morphology and distribution of the species of the lamellibranch genus Prothyris Meek, occurring in the Upper Devonian and Carboniferous of Great Britain, are reviewed. Of the three Upper Devonian species described by Whidborne (1896), P. scalprata is regarded as conspecific with P. contorta, and it is concluded that P. recta should be removed from the genus. A new Upper Devonian species, P. stubblefieldi, is described. Four species are recognized in the Carboniferous: P. breviformis Wilson, P. oblonga Wilson, P. scotica sp. nov., and P. carbonaria sp. nov.

• Read more about The lamellibranch genus Prothyris in the Upper Devonian and Carboniferous of Great Britain

The fauna of the Kee Scarp Formation at the type locality near Norman Wells, Northwest Territories, is reviewed, and its only common tetracoral is described as Alaiophyllum mackenziense sp. nov. It is concluded that the fauna is either Givetian or early Frasnian in age.

• Read more about Alaiophyllum mackenziense sp. nov., a Devonian tetracoral from Canada

A bulk sample of Pyritosphaera barbaria Love 1957 is shown by microchemical analysis, following other indications, to be dominantly organic in composition.

• Read more about The composition of Pyritosphaera barbaria Love 1957

New material of Upper Tremadocian graptolites from the Oslo Region, preserved in full or half relief in pyrite, is described. Bryograptus ramosus Brogger 1882 is shown to have distinct bithecae. 'Didymograptus' kiaeri Monsen 1925 is also shown to have bithecae and is made the type of the new genus Kiaerograptus. Adelograptus bulmani sp. nov. is a peculiar species, which might have affinities both with the anisograptids and the leptograptids and might be intermediate between them.

• Read more about Some Upper Tremadocian graptolites from Norway

The taxonomic status of the genera Micrhystridium, Baltisphaeridium, Vevyhachium, Multiplicisphaeridium, Leiosphaeridia, Leiosphaeridium, Protoleiosphaeridium, and Archaeohystrichosphaeridium is examined. The generic names Multiplicisphaeridium, Leiosphaeridium, and Protoleiosphaeridium are rejected: the genera Micrhystridium, Baltisphaeridium, Leiosphaeridia, and Veryhachium are redefined: and lists are given of the species now considered to belong to these genera, the generic attribution of 140 species being changed.

• Read more about On the interpretation and status of some hystrichosphere genera

Recent discoveries of phyllocarids in the Silurian and Devonian of the Barrandian area in Bohemia and the Upper Devonian of the Moravian Karst area are described. Nearly complete specimens of Aristozoe parabolica Perner and Pygocaris schuberti Perner have been found, permitting a more detailed diagnosis of the family Aristozoidae, to which the genus Heroldina Broili has also been referred. Ceratiocaris cornwallisensis damesi subsp. nov. from the Czech Silurian and Ceratiocaris (?) coherbaria sp. nov.

• Read more about Phyllocarid crustaceans from the Silurian and Devonian of Czechoslovakia

Scattered bryozoan localities in the Lyons Group contain three species of Stenopora, S. dickinsi sp. nov., S. fisheri sp. nov., and S. lyndoni sp. nov., that show little similarity to previously described species. The fenestellid Polypora lyndoni occurring at all the bryozoan localities studied has close affinities with two species from the Lower Permian of eastern Australia and one species from the Asselian of Timor. These species appear to be primitive members of a group of species described from the upper part of the Sakmarian Series of the Urals.

• Read more about Lower Permian Bryozoa from Western Australia

The morphology and stratigraphical importance of species of Marssonella and Pseudotextulariella from the Chalk of England are discussed. The type specimens of Pseudotextulariella preserved in the Cushman collection have been re-examined. This genus from the Cenomanian has been re-studied particularly in relation to the internal structures, which are re-described. The relationships of several conical arenaceous Foraminifera are discussed.

• Read more about The morphology and development of species of Marssonella and Pseudotextulariella from the Chalk of England