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On Slieve Anierin the Lower and Upper Eumorphoceras Stages of the Namurian contain an un-broken sequence of faunas; these are described in detail for the first time in Ireland. The simple geological structure enables marine bands to be collected in their undoubted order of superposition, in contrast to some equivocal sections elsewhere in Britain.

• Read more about The palaeontology of the Namurian rocks of Slieve Anierin, Co. Leitrim, Eire

Various microscopic pyrite forms are described from Lower Jurassic and Carboniferous argillaceous rocks and it is confirmed that solution of the pyrite reveals abundant microfossils of a limited range of morphological variety which are described and figured. Two groups are distinguished, one showing clear association with plant material and the other with animal remains. Of the latter, occurrences of later geological and Recent ages are briefly noted and figured.

• Read more about Further studies on micro-organisms and the presence of syngenetic pyrite

The trilobite Tiresias M'Coy is revised and redescribed from topotype material. The genus, assigned here to the family Isocolidae, is held to be a probable synonym of the North American genus Holdenia Cooper.

• Read more about The Ordovician trilobite genus Tiresias M'Coy, 1846

This paper gives a detailed account of the unique holotype of Sauuchthys krambergeri. A figure of this specimen was published as long ago as 1918 but, apart from a brief reference to it by Stensio, it has not previously been described. The illustrations include an attempted reconstruction of the skull. The structure of the teeth shows that some of Stensio's views concerning the teeth of saurichthyids are no longer tenable, and it is concluded that there are no characters which enable species to be referred to the genus Saurichthys solely on the basis of tooth structure.

• Read more about The Triassic fish Saurichthys krambergeri Schlosser

Two anthracosiid assemblages from the upper part of the lenisulcata Zone of the Leinster (Castle-comer) Coalfield, Ireland, one from Co. Tipperary (Slieveardagh) Coalfield, Ireland, and one from Glynneath, Glamorgan, South Wales, have been measured and are extensively illustrated. The results bear on relationships between the morphological species Carbonicola extenuata, C. crispa and C. proximo Eagar, C. extiina, and C. pontifex spp. nov. The latter are described with Naiadites hibernicus sp. nov. from the Upper Namurian of Leinster, and Anthraconaia fugax sp.

• Read more about New Upper Carboniferous non-marine lamellibranchs

The subdivision of the Lower D Beds is outlined and ammonites are shown to occur at nine horizons in D6 and D7. The ten species of ammonites fall into four genera and have links with faunas found in Lincolnshire, Russia, and Greenland. Four existing species are recorded, three are compared or have affinities wilt existing species, and three species are new. It is shown that this fauna is of Subcraspeditan (Berriasian) age and that the lowest ammonites are earlier than any yet recovered from the Spilsby Sandstone of Lincolnshire.

• Read more about Ammonoidea from the Lower D beds (Berriasian) of the Speeton Clay

Fusulinids identified from the Macal Shale Group, Macal Series, south central British Honduras are Schwagerina gruperaensis Thompson and Miller, Schwagerina sp. A, Eoverbeekina aff. E. americana Thompson and Miller, Ozawainella? sp., and Staffella sp. One species of the Trochamminid genus Tetrataxis also occurs in these strata. These species suggest correlation with the lower part of the Chochal Limestone of Guatemala, the Grupera Formation of Chiapas, Mexico, and the Lenox Hills Formation (upper part of the standard Wolf-campian Series, Permian), Glass Mountains, Texas.

• Read more about Permian foraminifera from British Honduras

Living brachiopod colonies show a marked preponderance of young stages hi the population but this is not a necessary criterion of a life-assemblage of fossil brachiopods. The occurrence of well-preserved whole shells of all growth stages is one of the criteria of a life-assemblage. The percentage of disarticulated and broken valves present in a fossil assemblage is roughly proportional to the distance drifted from the original site of life, but this refers to total distance, not necessarily net distance.

• Read more about Brachiopod ecology and Lower Greensand palaeogeography

Calcareous algae occur at several localities in the Upper Dolomitic Group of the Dalradian of Islay, Scotland; at Bonahaven, these stromatolites occur both within distinct bands and as small bioherms.

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Sections of microspores, some cingulate, one zonate and one saccate, are discussed and illustrated. It is shown that sections aid the elucidation of wall structures; thus diagnoses can be mere precisely written and this may eventually remove some classificatory difficulties. A sectioning technique is described.

• Read more about Sections of some Carboniferous dispersed spores