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Eight species of freshwater ostracod are described from the Bathonian of Oxfordshire as exposed in the Old Cement Quarry, Kirtlington, near Oxford. Because of the number of specimens available only two, Timiriasevia mackerrowi sp. nov. and Theriosynoecum kirtlingtonense sp. nov., are identified specifically. Other genera represented are:—Bisulcocypris; Darwinula; and Limnocythere. The presence of these freshwater ostracods in marine sediments and associated with marine ostracods is considered to be due to their being brought into the area by rivers.

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The nature of primary spiral ribs on apical whorls of Turritella (s.l.) is utilized for subdivision of the genus. However, variation causes some doubt as to the actual value of this criterion. Recognized variation is of two kinds: (1) 'variation' within a stock or group arising from improper grouping of species due to inadequate descriptive notation, and (2) actual variation displayed by various specimens of single species. Inadequate application of the terms 'unicarinate', 'mesocostate', 'unicostate', 'bicarinate', 'bicostate', &c.

• Read more about Apical development in turritellid classification with a description of Cristispira pugetensis gen. et sp. nov.

A new species of the calamitalean cone genus Paracalamostachys Weiss, P. cartervillei, is described. The holotype consists of a group of cones found in an 'ironstone' nodule of Middle Pennsylvanian age. The cones are small, ranging from 11 to 17 mm. in length, and 4-0 to 4-5 mm. in diameter. Several cones are present at a node on the cone-bearing stem, they lack peduncles, and consist of whorls of bracts and sporangiophores arranged alternately, the fertile whorls being superposed. Approximately six sporangiophores are present in the fertile whorl and twelve bracts in the sterile whorl.

• Read more about A new calamitalean cone from the Middle Pennsylvanian of southern Illinois

A generic revision of the Proviverrini is made, with special attention to European material from the middle Eocene. Phylogeny and parallel evolution are discussed. Proviverra is made identifiable; Sinopa, Geiselo-therium, Leonhardtina, and Prorhyzaena are synonymized with it. Specimens of the Miacidae and Oxyaenidae, and one of unknown affinities, are described from the Eocene of Europe. New taxa are the following: Delta-theridia, new order; Arfia, new genus; Prototomus torvidus, Cynohyaenodon trux, Prodissopsalis phonax, P. theriodis, and Miacis? macintyri, new species.

• Read more about Some European Proviverrini (Mammalia, Deltatheridia)

A species of cirripede, Arcoscalpellum comptum (Withers), hitherto known only from terga and carinae from the Lower Greensand, is here recorded from the Gault. Further valves are attributed to this species and the present known vertical and geographical distribution is tabulated.

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A preliminary account is given of the cranial structure of Dipnorhynchus sussmilchi (Etheridge) based on a newly found topotype from the Middle Devonian of Taemas, New South Wales.

• Read more about An almost complete skull roof and palate of the dipnoan Dipnorhynchus sussmilchi (Etheridge)

The rhynchonelloid Acanthothiris has tubular external spines similar to the spines of productoids and chonetoids. Their structure, arrangement and mode of growth are described in detail, on the basis of a study of exceptionally well-preserved specimens of A. spinosa. They are compared to the spines of the related genus Acanthorhynchia, and to those of the living oyster Crassostrea echinata.

• Read more about Sensory spines in the Jurassic brachiopod Acanthothiris

The tetracoral genus Smithiphyllum is emended. It is shown to be closely related to Tabulophyllum and consequently is transferred from the Spongophyllidae to the Endophyllidae.Additional material of the type species, S. imperfectum (Smith), is described and three new Frasnian species, S. belanskii from Iowa, S. kindlei from Alberta, and S. whittakeri from the Northwest Territories, are erected.

• Read more about Some North American species of the Devonian tetracoral Smithiphyllum

Two new genera, and nine new species of trilobites from the Albany mudstones with nodular limestones, east of Doularg, near Girvan, are described. The fauna is most closely allied to that of the superstes Mudstones, Aldons, having twenty-two of twenty-five genera in common, and fourteen species closely related. Outside the district the closest resemblance is to the lower Edinburg Formation (Porterfield Stage) of the Appalachian Valley of the U.S.A.

• Read more about Trilobites from the Albany Division (Ordovician) of the Girvan District, Ayrshire

As part of a revision of the rugose coral fauna of the Garra Formation of New South Wales, the families Disphyllidae and Phacellophyllidae are studied, particular note being taken of Schouppe's (1958) revision of this group. The arrangement of trabeculae and the dissepimental structure of the two families are discussed.New taxa described are: Mansuyphyllum bellense sp. nov., M. parvulum sp. nov., M. catombalense sp. nov., Paradisphyllum harundinetum gen. et sp. nov., and Hexagonaria approximans cribellum subsp. nov., in the family Disphyllidae; Peneckiella boreensis sp.

• Read more about Disphyllidae and Phacellophyllidae from the Devonian Garra Formation of New South Wales