Archive

Estaingia bilobata gen. et sp. nov. is described from the upper Lower Cambrian Emu Bay Shale of Kangaroo Island, South Australia. The genus resembles the Siberian genera Lermontovia Suvorova 1956, and Bergeroniellus Lermontova 1940, in the morphology of the cephalon and thorax, but it differs markedly in the structure of the pygidium, which is spinose and bilobed; it has tentatively been placed in the Paradoxididae. The fauna of the Emu Bay Shale also includes new species of Redlichia and Isoxys, and hyolithids.

• Read more about Estaingia, a new trilobite genus from the Lower Cambrian of South Australia

Dendrostella trigemme (Quenstedt), Grypophyllum graciliseptatum sp. nov., Utaratuia laevigata Crickmay, Sociophyllum glomerulatum (Crickmay), and Radiastraea verrilli (Meek) are shown to be common to the Hume and Nahanni Formations. In addition Taimyrophyllum, a senior synonym of Eddastraea, is recognized for the first time in North America, T. triadorum sp. nov. is described from the Hume Formation, and a closely related species T. vescibalteatum sp. nov.

• Read more about Correlation of the Canadian Middle Devonian Hume and Nahanni formations by tetracorals

Miospore assemblages are described from two horizons in rocks formerly regarded as comprising the Drybrook Sandstone of the Forest of Dean. The lower assemblage was obtained from a shaly intercalation in a typical development of massive pink or white sandstones, and the palynological evidence confirms the Upper Visean (Seminula Zone) age of these deposits.

• Read more about Miospores from the Drybrook Sandstone and associated measures in the Forest of Dean basin, Gloucestershire

A limited exposure of Upper Cretaceous marine siltstones and claystones near the coastal town of Carlsbad, California, contains a remarkably well-preserved microfauna.Twenty-six species of ostracods including twenty-three new species and one new trachyleberid genus occur in the upper part of the section. This faunule possesses distinct Cenozoic affinities expressed by the presence of the genera Trachyleberis, Actinocythereis, and Idiocythere, all of which have previously been reported from rocks not older than Lower Tertiary.

• Read more about Upper Cretaceous ostracods from California

Nineteen species of ostracoda are described from the Bargate beds exposed south-west of Guildford. The type material from an earlier paper is revised and refigured. Two of the species are found to require renaming and five new species are described. Four forms are left under open nomenclature.

• Read more about Revision of the Ostracoda from the Bargate beds in Surrey

The three occurrences of the stirodont echinoid Salenia Gray 1835 which Durham and Allison reported from the eastern Pacific in 1960 are described. A single, fragmentary specimen from the Aptian-Albian Alisitos formation of Baja California, Mexico, is tentatively referred to S. mexicana Schluter of the Mexican and Texas middle Cretaceous. Numerous specimens from the lower Oligocene Keasey formation of northwestern Oregon are described as S. schencki sp. nov. S. scrippsae sp. nov.

• Read more about The echinoid genus Salenia in the eastern Pacific

The genus Galaticeras is recorded from the Lower Lias of Britain for the first time. The palaeontology and stratigraphy of Tragophylloceras are revised, ten out of fourteen previously described species being placed in synonymy, while one new one, T. carinatum, is described. Microconch-macroconch pairs are recognized in Tragophylloceras and formally described, this being the first full description of dimorphic pairs in Liassic ammonites.

• Read more about Ammonites of the Liassic family Juraphyllitidae in Britain

Fragments of white chalky limestone dredged from Galicia Bank off the west coast of Spain contain coccoliths of two different ages. At a station on the northern slope, all the fragments have coccoliths of Middle Eocene age; the same species are also present on Muir Seamount, north-east of Bermuda, but are unknown in any rock exposed on land. In a sample from the underwater escarpment on the east side of Galicia Bank, only Cretaceous species can be recognized.

• Read more about Cretaceous and Tertiary coccoliths from Atlantic seamounts

Sediments and fossils were sampled at one-foot intervals across the Mt. Laurel-Navesink boundary (Upper Cretaceous) at Marlboro, New Jersey; this sequence is of some interest as it contains the Exogyra cancellata Zone, which has been traced along the coastal plain from New Jersey to Texas.

• Read more about The palaeoecology of a transition zone across an Upper Cretaceous boundary in New Jersey

The all-important Upper Magnesian Limestone specimens of Permophorus [formerly Pleurophorus] costatus (Brown) from Byers's Quarry, Durham, upon which King based his controversial diagnosis of the dentition of Pleurophorus King, have been located and re-examined. They confirm the belief of earlier authors that King's original description was erroneous and that there is only one cardinal tooth in each valve. Several other Upper Magnesian Limestone specimens of this species in the Kirkby Collection support these conclusions and have been figured.

• Read more about The dentition of the Durham Permian pelecypod Permophorus costatus (Brown)