New species of stromatoporoidea from the Upper Ordovician and Silurian of the Subpolar Urals

Stromatoporoidea are widespread in the Upper Ordovician and Silurian beds of the Kozhim River (western slope of the Subpolar Urals). Five new species Cystostroma prodigiosum sp. nov., Stylostroma flabellatum sp. nov., Labechiina arguta sp. nov., Ecclimadictyon faveolatum sp. nov., and Araneosustroma astroplexum sp. nov. are described.     

New conodont species from the Kasimovian Stage (Upper Carboniferous) of Moscow and Moscow Basin

Three new conodont species, Streptognathodus neverovensis, S. isakovae, and Idiognathodus mestsherensis, which are widespread in the Kasimovian Stage of central Russia, are described.     

New gastropod species from the Pleistocene of the Upper Don basin

Two new species of fossil freshwater gastropods, Borysthenia intermedia sp. nov. and Tanousia krasnenkovi sp. nov., from the Tiraspol deposits of the Middle Pleistocene of the Oka-Don Plain are described. Parafossarulus priscillae (Girotti, 1972), Viviparus diluvianus (Künth, 1865), and Lithoglyphus jahni Urbasnski, 1975 are reported from Russia for the first time. The status of some problematic species of freshwater gastropods from the Middle Pleistocene of the region studied is discussed. The chronological and environmental significance of all gastropods studied is given.     

中国东北侏罗纪中细蜂科一新属(膜翅目: 细蜂总科)

本文记述了中细蜂科 1新属 1新种。这是该科在中国的首次发现。标本采自辽宁省北票市上园乡黄半吉沟村上侏罗统义县组下部 ,现保存于中国科学院南京地质古生物研究所标本室。北票细蜂属 Beipiaoserphus,新属模式种 :华美北票细蜂 Beipiaoserphus elegans,sp.nov.。雌虫体小型。头大 ,横卵形 ;复眼大 ,近与头等长 ;触角线状 ,细 ,分为 2 5节 ,末端数节变细。前翅脉序完整 ;后翅 r室大。腹部分为 7节 ,末节不纵长。产卵器短 ,略伸出腹末 (产卵器鞘远短于后胫节长之半 )。新属可归入 Karataoserphinae。该属与 Karataoserphus、Lordoserphus相近 ,但已知属触角节数少得多 ,后翅 r室明显小 ,产卵器伸出腹末相当长 (产卵器鞘长于后胫节长之半 )。正模标本 :两块背视保存雌蜂标本 ,为正负两面 ;登记号 :1 32 0 4 8a,b。     

A new possible bivalve burrow Oblongichnus solodukhoi from the late Kazanian (middle Permian) stratotype section in Russia

A burrow previously assigned to the ichnotaxon Palaeophycus insignis is redescribed, and a new ichnotaxon Olongichnus solodukhoi n. igen. n. isp is erected for this flattened, slightly curved, multi-oriented, smooth burrow that has a thick lining with internal and external very fine-grained mucuous layers. It shows subrectangular to oblong form in cross section. O. solodukhoi is collected from the lowermost part of the Member D (Seryi Kamen Member, Pechishchi Beds) of the late Kazanian (middle Permian) stratotype section (East European Platform). It occurs in yellowish grey dolostone formed within open shallow-marine environments. O. solodukhoi records combined feeding and dwelling behaviours of a suspension-feeding organism. It could be produced by burrowing organisms with a simple flattened morphology, such as flatworms or polychaetes; however, we favour elongate and ultra-elongate bivalves as the potential tracemakers of the reported burrows.     

海南锥栗属新植物

1.五指山锥　别名 :山白锥 (五指山 )　新种　图版 - ACastanopsis wuzhishangensis　 G.A.Fu sp.nov.Species affinis Castanopsi carlesii( Hemsl.) Hayatavar.spinulosa,a qua folia crasoribus et duroribus dif-ferf.Etiam affinis C.Echinocarpae Miq.var.senin-udae,se     

New bryozoans from the Devonian-Carboniferous boundary beds of Transcaucasia

New species of Transcaucasian bryozoans are described: Primorela remota and Pseudoascopora subtilis (order Rhabdomesida) from the Upper Famennian and Anisotrypa hamata (order Trepostomida), Paranicklesopora stupenda, Euthyrhombopora barbara, Primorella testata, Ipmorella clara (order Rhabdomesida), and Taeniodictya vermiculata (order Cryptostomida) from the Tournaisian.     

Tower cells of the marine bryozoan Membranipora membranacea

We report on the occurrence, distribution, and anatomy of tower cells in colonies of the marine gymnolaemate bryozoan Membranipora membranacea that occurs epiphytically on the brown alga Fucus vesiculosus in the intertidal at Nahant, Massachusetts. Tower cells are a category of heterozooid that lack a polypide and possess an elongated finger‐shaped extension of the frontal surface. Two stages of tower‐cell development are examined. Developing tower cells possess an endocyst composed of epidermal and mesodermal cells. In fully developed tower cells, the endocyst is incomplete and consists in part of a mass of intermixed epi‐ and mesodermal cells suspended in the coelomic cavity. The coelomic fluid contains two types of coelomocytes: amoebocytes and granulocytes. The position and orientation of 1,592 tower cells are recorded. Fifty‐four percent of these tower cells occur at the contact zone between two different colonies, which suggests that tower cells might be a defense‐related structure preventing overgrowth by neighboring colonies. Additionally, 89% of the tower cells occurring at the lateral margin of the frond are parallel to the surface of the algal frond , which suggests that they may increase the rigidity of the frond‐colony complex, thereby protecting the colonies from abrasion. J. Morphol. 239:121–130, 1999. © 1999 Wiley‐Liss, Inc.     

Famennian conodonts from the Hongguleleng Formation at the Bulongguoer stratotype section,western Junggar,Northwest China

The Hongguleleng Formation, the highest and most important Devonian marine carbonate horizon in western Junggar, contains an endemic shallow-water Icriodus–Polygnathus conodont fauna with rare palmatolepids and other genera. The conodont faunas from the Bulongguoer and the Wulankeshun sections are similar, with high abundance (about 40%) of endemic taxa (13 taxa), indicating isolation of the Junggar Basin during early Famennian. Non-endemic species in the faunas suggest that the Lower Member of the Hongguleleng Formation is assignable to the Pa. rhomboidea Zone to the Pa. marginifera marginifera Zone of early Famennian, not including the Frasnian–Famennian boundary. The Upper Member may be of late Famennian–early Tournaisian in age on the basis of our preliminary faunal analysis.     

New species of Euptyctima (Acari,Oribatida) from New Zealand

Abstract

Oribotritia contortula n. sp., O. contraria n. sp., O. teretis n. sp., Rhysotritia bifurcata n. sp., Microtritia contraria n. sp., M. glabrata n. sp., Hoplophthiracarus bisulcus n. sp., Austrophthiracarus pulchellus n. sp., and Notophthiracarus claviger n. sp. are described from New Zealand.

The genera of Oribotritia Jacot, Rhysotritia Märkel & Meyer, Hoplophthiracarus Jacot, and Austrophthiracarus Balogh & Mahunka are new records for New Zealand.     

Systematics of the bryozoan genus Macropora (Cheilostomata)

Macropora is a distinctive genus of anascan cheilostomes. All species have large zooids with an extensive cryptocystal frontal shield perforated by numerous pores through which parietal muscle strands pass. Also characteristic of Macropora are the calcified opercula closing the d -shaped orifice, avicularia resembling autozooids but having slightly enlarged, typically crenulated opercula/mandibles, and large ovicells that are often costate. This mostly Australasian genus has a documented fossil record stretching back to the Eocene. Here we revise the generic diagnosis of Macropora and describe eight new species from New Zealand (three Recent: M. nodulosa sp. nov. , M. filifera sp. nov. and M. carlosi sp. nov. ; five fossil: M. septispinosa sp. nov. , M. similis sp. nov. , M. pittensis sp. nov. , M. leeae sp. nov. and M. bullata sp. nov. ) and one new species from Japan ( M. mawatariorum sp. nov. ), the only species known with certainty to occur in the northern hemisphere. New observations are given for some previously described species, several of which are illustrated using SEM for the first time. The northern hemisphere Upper Cretaceous species Monoporella exsculpta (Marsson), showing features allowing it to be placed tentatively in the stem-group of Macropora , is redescribed. Attempts to resolve the phylogenetic relationships of species within Macropora were hampered by the relatively few morphological characters compared with the number of species, and it proved impossible to obtain a phylogeny robust to slight changes in taxon and/or character inclusion. The favoured cladogram has poor bootstrap and Bremer support, and its stratigraphical and biogeographical congruences are low.  © 2008 The Linnean Society of London, Zoological Journal of the Linnean Society , 2008, 153 , 115–146.     

New Upper Cambrian Lingulata (Brachiopoda) from the Agyrek mountains (northeastern central Kazakhstan)

Two new genera, Repkinella and Aristotreta, and five new species from the class Lingulata (Brachiopoda) are described from the Upper Cambrian olistolith limestone enclosed in the Upper Ordovician olistostrome from the Agyrek mountains (northeastern Kazakhstan). The family Curticiidae Walcott et Schuchert is referred to the order Lingulida, not order Acrotretida, where it was previously placed.     

New endothyrids (Foraminifera) from the Upper Visean of the northern Ural Mountains

New endothyrids from the Upper Visean of the western slope of the northern Ural Mountains are described and assigned to the new species Eoendothyranopsis (Ninella) extremus and E. (N.) poststaffelliformis.     

New species and new records of diatoms from Lake Fuxian,China

Abstract One new species, four newly recorded genera, and two newly recorded species of diatoms are described from China. They are Sellaphora fuxianensis sp. nov. Li, Sellaphora Mereschkowsky, Karayevia Round & Bukhtiyarova, Placoneis Mereschkowsky, Fallacia Stickle & Mann, Placoneis prespanensis Levkov, Krstic & Nakov, and Fallacia lucinensis (Hustedt) D. G. Mann. All taxa were collected from Lake Fuxian in Yunnan Province, China. These species were observed with light and scanning electron microscopes, and their taxonomic characters are discussed.     

Isolation and characterization of microsatellites in the bryozoan Crisia denticulata

Cyclostomata bryozoa are thought to reproduce via polyembryony, a clonal replication of a fertilized egg. To test this hypothesis and to assess the impact of their reproductive strategy on the structure of populations, we isolated microsatellite markers in Crisia denticulata (Cyclostomata, Stenolemata), using an initial enrichment step with random amplified polymorphic DNA (RAPD) primers. A total of nine microsatellites, one tetra‐ and eight dinucleotides repeats were isolated; seven were found to be polymorphic in a test sample of 30 individuals, with allele numbers/locus varying from 2 to 6. The tetranucleotide locus showed heterozygote deficiency. These primers did not amplify the DNA of Crisia eburnea.     

New upper permian superfamily compositelasmatoidea (Brachiopoda, Terebratulida) from the east of the Russian platform: The specificity of ontogenetic transformations

A previously unknown type of ontogeny is discussed that unites features of two different types of loop development: the ancient dielasmoid type, which is typical of Upper Paleozoic terebratulids, and the angustothyridid type, which is typical of the Lower Mesozoic terebratulids. A new superfamily, Compositelasmatoidea, and a new family, Compositelasmatidae, with its type genus Compositelasma gen. nov., are established based on their unique ontogenetic changes.