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Hystrichospheres from the Silurian Wenlock Shale of England

Hystrichospheres from samples taken at a single locality and horizon in the Wenlock Shale of Wenlock Edge are described. The assemblage includes thirty-three species and varieties of Baltisphaeridium, Micrhystridium, Veryhachium, Cymatiosphaera, Pterospermopsis, Puhinosphaeridium, Leiofusa, Leiosphaeridia, and Tasmanites, of which fourteen are new. It most closely resembles an assemblage from the Wenlock of the Montague Noire.

Normanicythere gen. nov. (Pleistocene and Recent) and the division of the ostracod family Trachyleberididae

Taxonomic criteria are examined and a review of the family Trachyleberididae leads to a revised diagnosis of the subfamily Hemicytherinae. One of Norman's specimens is designated lectotype of Normanicythere leioderma, the type species of the new genus. The lectotype and a number of syntypes are figured for the first time, together with fossil Pleistocene material. Changes of hinge structure during development are described. The affinities of the genus are discussed and its growth and distribution examined.

A revision of the Jurassic stromatoporoids Actinostromina, Astrostylopsis, and Trupetostromaria Germovšek

Seven species of stromatoporoids described by Germovšek in 1954 from the Tithonian of Jugoslavia are redescribed and allocated to his genera Actinostromina and Astrostylopsis and placed in the family Actinostromariidae and the superfamily Actinostromariicae nov. The genus Trupetostromaria Germovsek is considered to be a junior synonym of Astrostylopsis.

Stretosaurus gen. nov., a giant pliosaur from the Kimeridge Clay

A giant Pliosaur is described. This is the second Pliosaur from the Kimeridge Clay in which limb girdles are known associated with the axial skeleton, but it is the only giant one of any age (with the exception of Kronosaurus from the Lower Cretaceous) in which the post-cranial skeleton is adequately known. The pectoral girdle of this animal is so unusual that a new generic name is considered necessary for its reception; the name Stretosaurus gen. nov. is proposed. However, the characters of the anterior cervical vertebrae enable it to be placed in the species S. macromerus (Phillips).

The classification and stratigraphical distribution of the Globigerinaceae, Part 1

In this paper, the first of a series on the superfamily Globigerinaceae (Carpenter, emended), a new classification is given, comprising three families and eleven subfamilies. Two new subfamilies (Globorotaloidinae and Sphaeroidinellinae), two new genera (Pseudohastigerina and Sphaeroidinellopsis), two new subgenera (Praeglobotruncana (Clavihedbergella) and Hastigerina (Bolliella)), and one new species (Hastigerina (Bolliella) adamsi) are proposed.

Wilkingia gen. nov. to replace Allorisma for a genus of Upper Palaeozoic lamellibranchs

The Upper Palaeozoic lamellibranch genus Allorisma King 1844 is placed in the synonomy of Edmon¬dia de Koninck 1842, as the type species, Sanguinolaria sulcata Phillips 1836, is conspecific with Hiatella sulcata Fleming 1828, the latter species being an Edmondia. The name Allorisma King 1850, for a sinu-pallial form, is replaced by the new name Wilkingia. The type species Wilkingia [Venus} elliptica (Phillips) is described.

Distinctions between the Carboniferous lamellibranch genera Caneyella, Posidonia, and Posidoniella

EXAMPLES of lamellibranchs variously referred to the genera Posidonia and Posidoniella occur abundantly in the Visean and Namurian rocks of England. This note gives external characters by which the two genera may be distinguished from each other and from the genus Caneyella. It is published with the permission of the Director of the Geological Survey of Great Britain.

Goniatites striatus and related forms from the Viséan of Ireland

Five goniatite species, of which two are new, are described from the Plb subzone of the Upper Viséan shales of Dough Mountain, Co. Leitrim, Ireland. These species are diagnosed mainly on the test ornamentation which is claimed to be continuously variable and is arbitrarily divided into stages. Goniatites, the mature orna¬ment of which belongs to a particular stage, are named as separate morphological species. The succession of ornament stages constitutes a trend which has operated upon a primitive stock both in B2 and Plb times.

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