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The occurrence of fish otoliths in the English Bathonian is recorded, some ten undescribed forms being represented. These are described together with details of the stratigraphy at the sections yielding them.

• Read more about Fish otoliths from the Bathonian of southern England

The first ostracods from the non-marine Lower Cretaceous ('West African. Wealden') of Ghana are described and figured. Three species belong to the genus Cypridea, two are referred to' Metacypris1', and one species might belong to Cyclocypris (?). All species appear to be new; they are left under open nomenclature because of scarcity of material. The ostracod assemblage shows closer affinities to the European Wealden than to the 'West African Wealden' in other occurrences.

• Read more about The first non-marine Lower Cretaceous ostracods from Ghana, West Africa

Trilobites belonging to the Upper Olenellus Faunizone (Lower Cambrian) and to the late Albertella and Glossopleura Faunizones (Middle Cambrian) are described from a single stratigraphic section that spans the Pioche Shale. Trilobites representing the oldest Middle Cambrian, the Plagiura-Poliella Faunizone, and the early Albertella Faunizone were not found. The interval in which the latter trilobites might be expected contains 260 ft. of barren strata. Four established, two undetermined, and three new species are described from the Upper Olenellus Faunizone.

• Read more about Lower and early Middle Cambrian trilobites from the Pioche Shale, east-central Nevada, U.S.A.

The occurrence of plant fossils in the Ischigualasto region in north-west Argentina is discussed in relation to the geology of the area. Specimens of large trunks of Rhexoxylon piatnitzkyi from the Ischigualasto formation are described and the peculiar secondary growth processes of the plant are discussed with reference to this new material.

• Read more about Studies on Triassic fossil plants from Argentina. III. The trunk of Rhexoxylon

Well-preserved shells of Praemytilus strathairdensis (Anderson and Cox) from the Great Estuarine Series (Middle Jurassic) of the Isle of Eigg, Scotland, are described with special reference to their microstructure, mineralogy, and chemical composition. Both the main calcareous shell layers are nacreous, with the crystal structure apparently identical to modern nacre. Myostracal layers are composed of prismatic aragonite; calcified traces of the periostracum have been observed. The inner layer shows sub-layers defined by variations in thickness of the nacreous laminae.

• Read more about The microstructure and mineralogy of the shell of a Jurassic mytilid (Bivalvia)

The discovery of symmetrically disposed multiple muscle scars in Bellerophon acutilira Hall, a middle Devonian form assigned to the bellerophontoid genus Sinuitopsis Perner, indicates that Sinuitopsis is a cyclo-myan monoplacophoran. Deployment of the muscle scars shows affinity with the cyclomyan genera Yochelso-nellis (Horny) and Cyrtolites Conrad. A ridge-furrow complex is interpreted as a reflection on the inside of the shell of a dorsally situated rectal tract. The presence of a deep anal sinus and notch in S.

• Read more about A sinus-bearing monoplacophoran and its role in the classification of primitive molluscs

A brackish-marine microfauna is described from the lower part of the Weald Clay (Cypridea tubercu-lata Zone) of Sussex. The fauna is dominated by ostracods; eight species are described, one subgenus and three species are new. One species of arenaceous foraminifera, and cirripedes, have also been found. The salinity range of the various species is critically examined and the fauna is compared with other Lower Cretaceous microfaunas outside the Weald.

• Read more about Marine-brackish bands and their microfauna from the lower part of the Weald Clay of Sussex and Surrey

A well-preserved spore flora containing elements diagnostic of a Tournaisian age has been obtained from a horizon approximately 100 ft. above the base of the Cementstone Group in Ayrshire. A total of twenty-two species of spores have been recognized in the assemblage; of these, eight are new. Comparison with assemblages from other parts of the world has indicated regional variations in the composition of the Tournaisian spore floras.

• Read more about A Tournaisian spore flora from the Cementstone Group of Ayrshire, Scotland

The frond anatomy and sporangial attachments of Biscalitheca musata Mamay are described from the Upper Pennsylvanian locality near Berryville, Illinois.

• Read more about Biscalitheca (Coenopteridales) from the Upper Pennsylvanian of Illinois

Six species of the genus Schizophoria are described from the Carboniferous of western Europe. Schizophoria annectans is new. All species are shown to be externally and internally distinct. Stratigraphical ranges and postulated phylogeny are also given.

• Read more about Carboniferous schizophoriid brachiopods from western Europe