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Platyteichum johnstonei sp. nov., P. johnstonei? and P.? sp. nov. are described. The holotype of P. costatum Campbell 1953, the type species, and of P. coniforme (Etheridge jun.) 1892 are figured and discussed; P. costatum may be a synonym of P. coniforme. Platyteichum Campbell 1953 appears to be closely related to Mourlonia de Koninck 1883 and Mourlonopsis Fletcher 1958.

• Read more about The gastropod Platyteichum in the Permian of Western Australia

An isolated coleopteran elytron from the Lower Lias of Lyme Regis is described and named Elaterina liassica gen. et sp. nov. Six fragments of coleoptera including five pieces of elytra and one metasternum were collected from a fissure of Rhaetic age in the Carboniferous Limestone of South Wales. Their relationship with the present-day Cupedidae is considered and the fragments have been named Metacupes harrisi gen. et sp. nov.

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Assemblages of microplankton from the Kellaways Rock and Oxford Clay of Yorkshire are described. They consist dominantly of hystrichospheres, including new species of Cymatiosphaera and of Canno-sphaeropsis. Dinoflagellates are also prominent, with Gonyaulax jurassica Deflandre most abundant: two new species of Gonyaulax are described. Organisms incertae sedis, probably microplankton, are present: three new genera, Stephanelytron, Antrosphaera, and Netrelytron, and a new species of Wanaea are described. The character and stratigraphic significance of the assemblages are discussed.

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The outstanding features of a number of crabs, belonging to three species, present on a single nodule from the London Clay (Upper Ypresian), are here described. Comparisons made with existing descriptions reveal certain new structures to one of the species; a new geographical recording is also made.

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Certain Palaeozoic rocks of the Amanos Mountains in southern Turkey have been investigated, and their stratigraphical relationships are briefly reviewed. Trilobites of Middle Cambrian, or Acadian, age have been collected from strata previously assigned to the Devonian. The specimens described here include the genus Pardailhania, together with an indeterminate agnostid, and suggest affinities with North African and eastern North American faunas of similar age.

• Read more about Cambrian trilobites from the Amanos Mountains, Turkey

Permocalculus ampullacea Elliott, from the lower part of the Lower Cretaceous of Algeria and Iraq, is believed to be based on plants of the sexual generation of the botanical species, including female plants; and associated fossils are interpreted as representing both male and asexual plants, so indicating a sexual organization like that of the comparable living chaetangiacid alga Galaxaura.

• Read more about The sexual organization of Cretaceous Permocalculus (calcareous algae)

Two new species of Carboniferous goniatites, Eumorphoceras rota and E. medusa and a variety, E. medusa var. sinuosum, are described from the Cravenoceras leion zone on Slieve Anierin, Co. Leitrim, Ireland.

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Gastropod faunas from Old Cannindah are the lowest found in a Lower Carboniferous sequence of strata, beginning with calcareous subgreywacke and detrital limestones and terminating with reef limestones. Rich faunas of molluscs, brachiopods, and corals occur throughout. The gastropod faunas include one new genus Austroworthenia, and six new species, as well as an indeterminate one—Euphemites minutus, Waagenella microstriata, Straparolus australis, S. subdionysii, Austroworthenia levis, Loxonema lamellosa, and Phymatifer sp. indet.

• Read more about Lower Carboniferous gastropod faunas from Old Cannindah, Queensland

Horridonia is redefined to include two variable species, H. horrida and H. timanica. The lectotype of the former is redescribed and figured. H. timanica is a Russian and Arctic species, H. horrida European. Both species occur in Greenland. The genera Sowerbina Fredericks emend. Dunbar and Pleurohorridonia Dunbarare considered synonymous with Horridonia.

• Read more about The Permian brachiopod genus Horridonia Chao

• Read more about The stratigraphical palaeontology of the Lower Greensand