Les Heterohelicidae du Cretace superieur pyreneen

1948 ◽  
Vol S5-XVIII (1-3) ◽  
pp. 15-35 ◽  
Author(s):  
Jacques Kikoine
Keyword(s):  
Special Reference ◽  
Upper Cretaceous ◽  
Planktonic Foraminifers ◽  
The Family ◽  
Cretaceous Deposits

Abstract Describes planktonic foraminifers belonging to the Heterohelicidae (including Gublerina cuvillieri n.g. n.sp.) from upper Cretaceous deposits of the French Pyrenees and discusses the evolution and classification of the family, with special reference to its stratigraphic significance.

Parataxonomic classification of ornithoid eggshell fragments from the Oldman Formation (Judith River Group; Upper Cretaceous), southern Alberta

1996 ◽  
Vol 33 (12) ◽  
pp. 1655-1667 ◽  
Author(s):  
Darla K. Zelenitsky ◽  
L. V. Hills ◽  
Philip J. Currie
Keyword(s):  
Late Cretaceous ◽  
Shell Thickness ◽  
Upper Cretaceous ◽  
Theropod Dinosaur ◽  
Surface Sculpture ◽  
External Zone ◽  
Theropod Dinosaurs ◽  
Southern Alberta ◽  
The Family

Examination of a large number of eggshell fragments collected from the Oldman Formation of southern Alberta reveals a greater ootaxonomic diversity than is known from complete eggs or clutches. Three new oogenera and oospecies of the ornithoid-ratite morphotype and one of the ornithoid-prismatic morphotype are established, based on the eggshell fragments. Porituberoolithus warnerensis oogen. et oosp. nov. and Continuoolithus canadensis oogen. et oosp. nov. have a microstructure similar to that of elongatoolithid eggs of theropod dinosaurs. Tristraguloolithus cracioides oogen. et oosp. nov. and Dispersituberoolithus exilis oogen. et oosp. nov. possess an external zone and thus have a microstructure like modern avian eggshell. Tristraguloolithus has a shell thickness, microstructure, and surface sculpture similar to those of recent bird eggshell of the family Cracidae (order Galliformes). Dispersituberoolithus exhibits the primitive or normal eggshell condition of some recent neognathous avian taxa. The ootaxa described indicate a diversity of both avian and theropod dinosaur egg layers within Devil's Coulee and Knight's Ranch, southern Alberta, during the Late Cretaceous.

Egg parasitism in Aphelinidae (Hymenoptera: Chalcidoidea) with special reference to Centrodora and Encarsia species

1991 ◽  
Vol 81 (1) ◽  
pp. 97-106 ◽  
Author(s):  
Andrew Polaszek
Keyword(s):  
Biological Control ◽  
Special Reference ◽  
New Combination ◽  
Biological Control Agents ◽  
Crop Pests ◽  
The Family ◽  
Egg Parasitism

AbstractAphelinidae are all insect parasitoids, and most species are associated with nymphal stages of Homoptera: Sternorrhyncha, either as primary parasitoids or hyperparasitoids. The occurrence of egg parasitism in aphelinids has been recorded in eight of the 38 valid genera and these records are reviewed; it is particularly common in the genus Centrodora, which is shown to be the most polyphagous in the family. One species, C. darwini (Girault), is given special attention because of its occurrence in three recent surveys for biological control agents of crop pests. It is briefly redescribed, diagnosed, and shown to be the most polyphagous aphelinid known. A checklist of Australian Centrodora spp. is given, including the new combination Centrodora grotiusi (Girault) comb. n. The purported evidence for the classification of certain Encarsia spp. associated with eggs of Lepidoptera as ‘heterotrophic parasitoids’ is re-examined and dismissed.

scholarly journals Phylogeny of the Lobariaceae (lichenized Ascomycota: Peltigerales), with a reappraisal of the genus Lobariella

2013 ◽  
Vol 45 (2) ◽  
pp. 203-263 ◽  
Author(s):  
Bibiana MONCADA ◽  
Robert LÜCKING ◽  
Luisa BETANCOURT-MACUASE
Keyword(s):  
Special Reference ◽  
New Combinations ◽  
Lower Side ◽  
Gene Phylogeny ◽  
Its Phylogeny ◽  
Ecological Features ◽  
The Family ◽  
Traditional Classification ◽  
Chemical Characters

AbstractThe generic classification of Lobariaceae based on a three-gene phylogeny of mtSSU, nuLSU and ITS data, with special reference to the genus Lobariella, is reassessed. Twelve well-supported clades are recognized within Lobariaceae, which correlate with morpho-chemical and ecological features and are suggested to represent distinct generic lineages within the family. Lobaria s. lat. forms at least six lineages: Lobaria s. str. (type L. pulmonaria), the Pseudocyphellaria anomala group, for which the genus Anomalobaria is introduced (type A. anomala), Lobarina (type L. scrobiculata), Ricasolia (type R. amplissima; syn.: Dendriscocaulon), the Sticta wrightii group, for which the genus Dendriscosticta is introduced (type D. wrightii), the Lobaria peltigera group, for which the genus Yoshimuriella is introduced (type Y. fendleri), and Lobariella (type L. crenulata; syn: Durietzia nom. illeg.). Pseudocyphellaria s. lat. comprises four lineages, each of which having genus-level names available: Crocodia (type C. aurata), Parmostictina (type P. hirsuta), Podostictina (type P. endochrysoides), and Pseudocyphellaria (type P. crocata). The Pseudocyphellaria anomala group (Anomalobaria) comes out sister to Lobaria s. str., whereas Sticta s. lat. forms two unrelated lineages, Sticta s. str. (type S. sylvatica) and the S. wrightii group (Dendriscosticta), which is closely related to Lobariella and the Lobaria peltigera group (Yoshimuriella). Although these twelve clades can be organized into three larger clades that largely correspond to the traditional genera Lobaria, Pseudocyphellaria, and Sticta, the clade support for Pseudocyphellaria s. lat., as well as the distribution of morpho-chemical characters over the topology, does not favour such a conclusion. In particular, the most relevant characters traditionally used to separate these genera, pseudocyphellae and/or cyphellae, are found in at least two of the three larger clades (some species of Sticta having pseudocyphellae rather than cyphellae). The strongly supported Lobaria s. lat. clade includes species with and without cyphellae and pseudocyphellae (both on the lower side), which defies the traditional classification using these characters. Based on an expanded ITS phylogeny, Lobariella itself is emended to include 26 species, and a key is presented to all species. The following three genera and 19 species are described as new: Anomalobaria B. Moncada & Lücking gen. nov., Dendriscosticta B. Moncada & Lücking gen. nov., Yoshimuriella B. Moncada & Lücking gen. nov., Lobariella angustata B. Moncada & Lücking sp. nov., L. auriculata B. Moncada & Lücking sp. nov., L. ecorticata B. Moncada & Lücking sp. nov., L. flavomedullosa B. Moncada, Betancourt-Macuase & Lücking sp. nov., L. isidiata B. Moncada & Lücking sp. nov., L. nashii B. Moncada & Lücking sp. nov., L. olivascens B. Moncada & Lücking sp. nov., L. pallidocrenulata B. Moncada & Lücking sp. nov., L. papillifera B. Moncada & Lücking sp. nov., L. parmelioides B. Moncada & Lücking sp. nov., L. peltata B. Moncada & Lücking sp. nov., L. pseudocrenulata B. Moncada & Lücking sp. nov., L. reticulata B. Moncada & Lücking sp. nov., L. rugulosa B. Moncada & Lücking sp. nov., L. soredians B. Moncada, Betancourt-Macuase & Lücking sp. nov., L. spathulifera B. Moncada & Lücking sp. nov., L. stenroosiae B. Moncada & Lücking sp. nov., L. subcorallophora B. Moncada & Lücking sp. nov., and L. subcrenulata B. Moncada & Lücking sp. nov. Further, the following 15 new combinations are proposed: Anomalobaria anomala (Brodo & Ahti) B. Moncada & Lücking comb. nov. [Pseudocyphellaria anomala Brodo & Ahti], A. anthraspis (Ach.) B. Moncada & Lücking comb. nov. [Sticta anthraspis Ach.; Pseudocyphellaria anthraspis (Ach.) H. Magn.], Dendriscosticta platyphylla (Trevis.) B. Moncada & Lücking comb. nov. [Lobaria platyphylla Trevis.; Sticta nylanderiana Zahlbr.], D. platyphylloides (Nyl.) B. Moncada & Lücking comb. nov. [Sticta platyphylloides Nyl.], D. oroborealis (Goward & Tønsberg) B. Moncada & Lücking comb. nov. [Sticta oroborealis Goward & Tønsberg], D. praetextata (Räsänen) B. Moncada & Lücking comb. nov. [Sticta platyphylla var. praetextata Räsänen; S. praetextata (Räsänen) D. D. Awasthi], D. wrightii (Tuck.) B. Moncada & Lücking comb. nov. [Sticta wrightii Tuck.], Lobariella corallophora (Yoshim.) B. Moncada & Lücking comb. et stat. nov. [Lobaria exornata var. corallophora Yoshim.], Yoshimuriella carassensis (Vain.) B. Moncada & Lücking comb. nov. [Lobaria carassensis Vain.], Y. corrosa (Ach.) B. Moncada & Lücking comb. nov. [Sticta dissecta var. corrosa Ach.; Lobaria corrosa (Ach.) Vain.], Y. deplanata (Nyl.) B. Moncada & Lücking comb. nov. [Ricasolia subdissecta f. deplanata Nyl.; Lobaria deplanata (Nyl.) Yoshim.], Y. dissecta (Sw.) B. Moncada & Lücking comb. nov. [Lichen dissectus Sw.; Lobaria dissecta (Sw.) Raeusch], Y. fendleri (Tuck. & Mont.) B. Moncada & Lücking comb. nov. [Sticta fendleri Tuck. & Mont.; Lobaria fendleri (Tuck. & Mont.) Lindau], Y. subcorrosa (Nyl.) B. Moncada & Lücking comb. nov. [Ricasolia subcorrosa Nyl.; Lobaria subcorrosa (Nyl.) Vain.], and Y. subdissecta (Nyl.) B. Moncada & Lücking comb. nov. [Ricasolia subdissecta Nyl.; Lobaria subdissecta (Nyl.) Vain.].

Three new species, two new genera, and new family Biphragmosagittidae (Сhaetognatha) from Southwest Pacific Ocean

2011 ◽  
Vol 20 (1) ◽  
pp. 161-173
Author(s):  
A.P. Kassatkina
Keyword(s):  
New Species ◽  
Type Species ◽  
Morphological Characters ◽  
The Body ◽  
New Order ◽  
New Genera ◽  
New Family ◽  
The Family ◽  
Three New Species

Resuming published and own data, a revision of classification of Chaetognatha is presented. The family Sagittidae Claus & Grobben, 1905 is given a rank of subclass, Sagittiones, characterised, in particular, by the presence of two pairs of sac-like gelatinous structures or two pairs of fins. Besides the order Aphragmophora Tokioka, 1965, it contains the new order Biphragmosagittiformes ord. nov., which is a unique group of Chaetognatha with an unusual combination of morphological characters: the transverse muscles present in both the trunk and the tail sections of the body; the seminal vesicles simple, without internal complex compartments; the presence of two pairs of lateral fins. The only family assigned to the new order, Biphragmosagittidae fam. nov., contains two genera. Diagnoses of the two new genera, Biphragmosagitta gen. nov. (type species B. tarasovi sp. nov. and B. angusticephala sp. nov.) and Biphragmofastigata gen. nov. (type species B. fastigata sp. nov.), detailed descriptions and pictures of the three new species are presented.

scholarly journals Extensive Phylogenetic Analysis of Piscine Orthoreovirus Genomic Sequences Shows the Robustness of Subgenotype Classification

Pathogens ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 41
Author(s):  
Marcos Godoy ◽  
Daniel A. Medina ◽  
Rudy Suarez ◽  
Sandro Valenzuela ◽  
Jaime Romero ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Genetic Variation ◽  
Sequence Analysis ◽  
Molecular Phylogeny ◽  
Phylogenetic Trees ◽  
Genomic Segment ◽  
Double Stranded Rna ◽  
The Family ◽  
Original Classification

Piscine orthoreovirus (PRV) belongs to the family Reoviridae and has been described mainly in association with salmonid infections. The genome of PRV consists of about 23,600 bp, with 10 segments of double-stranded RNA, classified as small (S1 to S4), medium (M1, M2 and M3) and large (L1, L2 and L3); these range approximately from 1000 bp (segment S4) to 4000 bp (segment L1). How the genetic variation among PRV strains affects the virulence for salmonids is still poorly understood. The aim of this study was to describe the molecular phylogeny of PRV based on an extensive sequence analysis of the S1 and M2 segments of PRV available in the GenBank database to date (May 2020). The analysis was extended to include new PRV sequences for S1 and M2 segments. In addition, subgenotype classifications were assigned to previously published unclassified sequences. It was concluded that the phylogenetic trees are consistent with the original classification using the PRV genomic segment S1, which differentiates PRV into two major genotypes, I and II, and each of these into two subgenotypes, designated as Ia and Ib, and IIa and IIb, respectively. Moreover, some clusters of country- and host-specific PRV subgenotypes were observed in the subset of sequences used. This work strengthens the subgenotype classification of PRV based on the S1 segment and can be used to enhance research on the virulence of PRV.

scholarly journals Sequence data from isolated lichen-associated melanized fungi enhance delimitation of two new lineages within Chaetothyriomycetidae

2021 ◽  
Vol 20 (7) ◽  
pp. 911-927
Author(s):  
Lucia Muggia ◽  
Yu Quan ◽  
Cécile Gueidan ◽  
Abdullah M. S. Al-Hatmi ◽  
Martin Grube ◽  
...  
Keyword(s):  
Sequence Data ◽  
Single Species ◽  
Sister Group ◽  
Asexual Propagation ◽  
Dna Sequence Data ◽  
Wide Range ◽  
The Family ◽  
Rock Inhabiting Fungi ◽  
Stable Habitat

AbstractLichen thalli provide a long-lived and stable habitat for colonization by a wide range of microorganisms. Increased interest in these lichen-associated microbial communities has revealed an impressive diversity of fungi, including several novel lineages which still await formal taxonomic recognition. Among these, members of the Eurotiomycetes and Dothideomycetes usually occur asymptomatically in the lichen thalli, even if they share ancestry with fungi that may be parasitic on their host. Mycelia of the isolates are characterized by melanized cell walls and the fungi display exclusively asexual propagation. Their taxonomic placement requires, therefore, the use of DNA sequence data. Here, we consider recently published sequence data from lichen-associated fungi and characterize and formally describe two new, individually monophyletic lineages at family, genus, and species levels. The Pleostigmataceae fam. nov. and Melanina gen. nov. both comprise rock-inhabiting fungi that associate with epilithic, crust-forming lichens in subalpine habitats. The phylogenetic placement and the monophyly of Pleostigmataceae lack statistical support, but the family was resolved as sister to the order Verrucariales. This family comprises the species Pleostigma alpinum sp. nov., P. frigidum sp. nov., P. jungermannicola, and P. lichenophilum sp. nov. The placement of the genus Melanina is supported as a lineage within the Chaetothyriales. To date, this genus comprises the single species M. gunde-cimermaniae sp. nov. and forms a sister group to a large lineage including Herpotrichiellaceae, Chaetothyriaceae, Cyphellophoraceae, and Trichomeriaceae. The new phylogenetic analysis of the subclass Chaetothyiomycetidae provides new insight into genus and family level delimitation and classification of this ecologically diverse group of fungi.

A comparison of methodological approaches to the subfamilial classification of the Naididae (Oligochaeta)

1987 ◽  
Vol 65 (3) ◽  
pp. 691-707 ◽  
Author(s):  
A. F. L. Nemec ◽  
R. O. Brinkhurst
Keyword(s):  
Data Matrix ◽  
Jaccard Coefficient ◽  
Data Set ◽  
Parsimony Method ◽  
Fit Statistics ◽  
Reconstruction Methods ◽  
Linkage Methods ◽  
The Family ◽  
First Time

A data matrix of 23 generic or subgeneric taxa versus 24 characters and a shorter matrix of 15 characters were analyzed by means of ordination, cluster analyses, parsimony, and compatibility methods (the last two of which are phylogenetic tree reconstruction methods) and the results were compared inter alia and with traditional methods. Various measures of fit for evaluating the parsimony methods were employed. There were few compatible characters in the data set, and much homoplasy, but most analyses separated a group based on Stylaria from the rest of the family, which could then be separated into four groups, recognized here for the first time as tribes (Naidini, Derini, Pristinini, and Chaetogastrini). There was less consistency of results within these groups. Modern methods produced results that do not conflict with traditional groupings. The Jaccard coefficient minimizes the significance of symplesiomorphy and complete linkage avoids chaining effects and corresponds to actual similarities, unlike single or average linkage methods, respectively. Ordination complements cluster analysis. The Wagner parsimony method was superior to the less flexible Camin–Sokal approach and produced better measure of fit statistics. All of the aforementioned methods contain areas susceptible to subjective decisions but, nevertheless, they lead to a complete disclosure of both the methods used and the assumptions made, and facilitate objective hypothesis testing rather than the presentation of conflicting phylogenies based on the different, undisclosed premises of manual approaches.

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