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Eoginkgoites davidsonii sp. nov. is a large pinnately compound bennettitalean leaf which has wedge-shaped pinnae. It is unusual because the pinnae are aggregated near the top of a short rachis and not arranged laterally on a long rachis as in other pinnate bennettitalean leaves. The veins radiate from the base of each pinna and divide and anastomose several times before reaching the margins and apices. The cuticle of the new species shows paracytic (syndetocheilic) stomata. Typically E. davidsonii sp. nov. is larger than the other species of the genus. E. davidsonii sp. nov.

• Read more about An unusual bennettitalean leaf from the Upper Triassic of the south-western United States

The new phyllocarid genus Perspicaris is proposed to include the type, Canadaspis dictynna Simonetta and Delle Cave, 1975, and P. recondita sp. nov., from the Middle Cambrian Burgess Shale of British Columbia. The two species are reconstructed in detail apart from the poorly preserved thoracic appendages. Hymenocaris? parva Walcott, 1912, from the same locality, is tentatively assigned to the genus Tuzoia Walcott, 1912.

• Read more about Bivalved arthropods from the Cambrian Burgess Shale of British Columbia

A new plant spore, Ricciisporites umbonatus sp. nov., is described. Its occurrence in surface and subsurface is reported. The species appears to occur in Norian and Karnian age rocks.

• Read more about A new Ricciisporites from the Triassic of Arctic Canada

The discovery of a well-preserved associated chimaeroid dentition in the Oxford Clay near Peterborough, England has permitted a revised description of the Jurassic chimaeroid Brachymylus altidens Woodward. It is assigned with Pachymylus and Callorhinchus to the family Callorhinchidae. The holotype of B. minor Woodward and lectotype of B. altidens Woodward are figured for the first time.

• Read more about Associated dentition of the chimaeroid fish Brachymylus altidens from the Oxford Clay

Analysis of the literature has shown that the use of form taxa to describe tricolpate and tricolporate pollen grains from the European Tertiary has little stratigraphic or botanical value. An alternative methodology for investigating Tertiary pollen involves two stages in the process of observation and description. One of these, the first phase, is dealt with in this paper, and involves assigning pollen to a group by means of a simply defined grid; this enables easy identification of all possible types.

• Read more about A system of group names for some Tertiary pollen

Arenobulimina macfadyeni Cushman is suggested as the parent stock from which A. chapmani Cushman arose, probably around the Middle-Upper Albian boundary. A. chapmani gave rise to A.frankei Cushman in the varicosum Subzone, which in turn gave rise to A. truncata (Reuss) in the auritus Subzone. A. sabulosa (Chapman) also appears in the auritus Subzone. A.frankei, not A. sabulosa, is suggested as the parent stock from which Flourensina intermedia Ten Dam evolved in the upper Stoliczkaia dispar Zone, whilst the extinction of A. chapmani at this level is followed by the appearance of A.

• Read more about The evolutionary interpretation of the Foraminiferida Arenobulimina, Gavelinella, and Hedbergella in the Albian of north-west Europe

Newly discovered specimens and re-evaluation of previous evidence indicate a much closer relation between the solutan carpoids Belemnocystites, Myeinocystites, Scalenocystites, and lowacystis than was previously suspected. Comparative studies of all known species, including observations on the ontogeny of S. strimplei Kolata and I. sagittaria Thomas and Ladd, show that numerous thecal and steleal structures are homologous.

• Read more about Revision of the Ordovician carpoid family Iowacystidae

Seven new species of the ostracod genus Hornibrookella are described and illustrated from the uppermost Maastrichtian and Palaeocene of eastern Saudi Arabia: Hornibrookella cyclifossata, H. cyclopea, H. cuspidata, H. divergens, H. episcelis, H. posterisella, and H. quinquecellulosa. They occur at earlier horizons than species of the genus described from Europe and Pakistan. A modification of the Liebau diagram has been adopted for the analysis of the ornament.

• Read more about Cretaceous and Palaeocene species of the ostracod Hornibrookella from Saudi Arabia

Previous studies on Upper Carboniferous floral palaeoecology are reviewed and relationships between fossil plant assemblages, depositional environments, and contemporaneous plant communities are discussed. A point-quadrat sampling technique was applied to a quantitative study of plant horizons in a 'roof shale' of a thin coal below Skipsey's Marine Band (Westphalian B) at a locality near Annbank, Strathclyde. This study has shown that the number and percentage cover of 'drifted' and in situ species varies up the succession.

• Read more about A review of the ecology of Upper Carboniferous plant assemblages, with new data from Strathclyde

The family Egorovitinidae is erected for Egorovitina kirssanovi gen. et. sp. nov. a new ostracod with an unusual adductor muscle scar, from the Lower Carboniferous (Visean) deposits of the Novgorod region, U.S.S.R. The presence of a simple calcined inner lamella may indicate that this new family has affinities with the Podocopina.

• Read more about A new family of Palaeozoic ostracods