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| Registros recuperados: 824 | |
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| Kakabadze, M.V.. |
| The variability in the dimensions of the shell, and some changes in suture line, sculpture, whorl section and mode of coiling in the late ontogenetic stages, have in some cases no taxonomic significance for the recognition of genera and higher taxa of Cretaceous heteromorph ammonites. In many cases, such phenomena are due to intraspecific variation or variation within a genus. The intrageneric variations of some Cretaceous heteromorphs are discussed in detail in the light of new, rich Colombian material. In relation to these problems in systematics, some questions on the systematics of the superfamily Ancyloceratoidea Gill are considered. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ammonites; Heteromorphs; Dimorphism; Systematics; Cretaceous; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214457 |
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| Adema, Frits. |
| This book contains a wealth of information on Monocotyledons. The papers are based on presentations at the Second International Conference on Comparative Biology of the Monocotyledons, Monocots II, held in Sydney, Australia in 1998, but many have been updated or extended to take into account new information. The book is divided into three main sections: General Comparative Biology of the Monocots (33 papers), Systematics of the Lilioides (18 papers), and Systematics of the Commelinoids (29 papers). General Comparative Biology of the Monocots covers the fields: Higher level systematics and new classifications; Biogeography and Fossils; Development and... |
| Tipo: Article / Letter to the editor |
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| Ano: 2000 |
URL: http://www.repository.naturalis.nl/record/525433 |
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| Holttum, R.E.. |
| As noted in Dr L.G.M. Baas Becking’s Postscript to Mr van Bemmel’s article in Chronica Naturae Vol. 104, part 4, the new systematics has not been entirely neglected by botanists. I would like to put a further botanical vieuwpoint on this subject. Firstly, I suggest that there is no sharp distinction between the old systematics and the new; secondly, I would emphasize that systematics of the primary descriptive type are an essential basis for the new systematics, and that we are still a long way from completeness in our primary systematic study of Malaysian plants. Systematics of the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1948 |
URL: http://www.repository.naturalis.nl/record/533110 |
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| Prud’homme van Reine, W.F.; Polak, A.M.; Hovenkamp, P.; Stevens, P.F.; Wilde, W.J.J.O. de. |
| This important book contains a clear, modern introduction to the cytology, morphology and systematics of the algae, providing a wealth of information for all those studying or working with these organisms. It takes in account recent re-evaluations in algal systematics and phylogeny, and these two main fields are the most extensively covered. The re-evaluations have been made necessary by insights provided by molecular genetics, electron microscopy, and new life history studies. The introduction gives thought about classification, evolution and phylogeny and is directly followed by the chapters on the main algal groups. There the principal characteristics of each group are outlined, usually... |
| Tipo: Article / Letter to the editor |
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| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/525979 |
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| Mirande,Juan Marcos. |
| The family Characidae is the most diverse among Neotropical fishes. Systematics of this family are mainly based on pre-cladistic papers, and only recently a phylogenetic hypothesis for Characidae was proposed by the author. That phylogeny was based on 360 morphological characters studied for 160 species, including representatives of families related to Characidae. This paper is based on that phylogenetic analysis, with the analyzed characters described herein and documented, accompanied by comparisons of their definition and coding in previous papers. Synapomorphies of each node of the proposed phylogeny are listed, comparisons with previous classifications provided, and autapomorphies of the analyzed species listed.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ostariophysi; Osteology; Morphology; Classification; Systematics. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300001 |
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| NN. |
| Please submit your announcement to this Bulletin as early as possible! Several were received too late for interested readers to make use of. After the event please send a summary of the doings and/or the Proceedings, if any. Systematics and Biogeography of the Austral Biota, Canberra, Australia, August 1990. The ninth meeting of the Willi Hennig Society will take place in Canberra, Australia, 24-27 August 1990. The invited and contributed papers will be a mix of theory, methodology, and practice with the special theme of the systematics and historical biogeography of the Austral Biota. Sessions planned include: Molecular biology and systematics (W.... |
| Tipo: Article / Letter to the editor |
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| Ano: 1989 |
URL: http://www.repository.naturalis.nl/record/532862 |
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| Duistermaat, Helena; Balgooy, M.M.J. van; Welzen, P.C. van; Esser, H.-J.; Middleton, David; Adema, Frits; Veldkamp, J.F.. |
| The International Conference ‘Compositae: Systematics, Biology, Utilization’ held in 1994 inspired the authors, on the suggestion of Dr. K. Ferguson, to publish a book accommodating more general systematic papers on Asteraceae, resulting in the present work. It contains seventeen chapters [in English, French (1), and Spanish (1)], including the Introduction by C. Jeffrey, and is provided with a taxonomic index. Following the Introduction, Jeffrey gives a review of the developments in Asteraceae systematics during the last 20 years, since the conference of 1975. I agree with him that improvements are possible in the use of cladistic analysis in taxonomy, but it seems to me that his review... |
| Tipo: Article / Letter to the editor |
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| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/525946 |
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| Penev, L.; Erwin, T.; Thompson, F.C.; Sues, H.-D.; Engel, M.S.; Agosti, D.; Pyle, R.; Ivie, M.; Assmann, T.; Henry, T.; Miller, J.; Ananjeva, N.B.; Casale, A.; Lourenco, W.; Golovatch, S.; Fagerholm, H.-P.; Taiti, S.; Alonso-Zarazaga, M.; Nieukerken, E. van. |
| Publishing taxonomic and systematics studies in the digital era faces major challenges and requires new approaches, many of which are currently stimulating spirited discussions amongst taxonomists and systematists. New amendments to the International Code of Zoological Nomenclature are expected to regulate electronic publishing of new taxa and create a standard form for their registration (ZooBank). Responding to a perceived need, this editorial announces establishment of ZooKeys â a new online and print journal in zoological taxonomy and systematics, which aims to quickly respond and adapt to the newest developments in taxonomic publishing. Open Access is accepted as mandatory for... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Taxonomy; Systematics; Online publishing; ZooBank; Open access; 42.70; 54.84. |
| Ano: 2008 |
URL: http://www.repository.naturalis.nl/record/434734 |
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| Kakabadze, M.V.; Hoedemaeker, P.J.. |
| The stratigraphic ranges and systematics of heteromorphic ammonites from Lower Cretaceous (Hauterivian-Barremian) deposits in Lower Saxony, northern Germany, are revised. Nine genera and fortyseven species of the family Ancyloceratidae Gill, 1871, are described. One genus (Fissicostaticeras) and 20 species are new; Emericiceras ressense, E. sornayiforme, E. serpentinum, E. subtilicostatum, E. gotti, E. hannoverense, E. kemperi, Crioceratites hastensis, C. subisocostatus, C. vermiformis, Fissicostaticeras claviferum, F. aequicostatoides, F. rarocinctoides, Paracrioceras kleini, Acrioceras (Acrioceras) sarstedtense, A. (A.) crassicostatum, A. (A.) aegidii, A. (A.) longum, A. (A.) astrictum and Uhligia aegidii. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Heteromorphic ammonites; Systematics; Hauterivian; Barremian; Stratigraphy; Northern Germany; New taxa; 38.22. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/329769 |
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| Buot, I.E.; Hernaez, B.F.; Tandang, D.N.. |
| With the founding of the Museum of Natural History (MNH) at the University of the Philippines Los Baños (UPLB) the former Department of Botany Herbarium (CAHUP) has been transferred to this. This required the establishment of another herbarium to cater to the increasing need by courses in systematics of the undergraduate and graduate programs of the Institute of Biological Sciences (IBS), UPLB. Thus, in 1999, the birth of the IBS Herbarium (PBDH). It is used for six more or less advanced courses in biodiversity, botany, ecology, and systematics. It is also the repository of documentation on the flora of Mt Makiling and vicinity. Mount Makiling is the best scientifically studied mountain of... |
| Tipo: Article / Letter to the editor |
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| Ano: 2002 |
URL: http://www.repository.naturalis.nl/record/533286 |
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| Marques, Antonio C.. |
| Eudendrium pocaruquarum, a new species of athecate hydroid referable to the family Eudendriidae, is described from the state of São Paulo, Brazil. The species is very similar to the widespread Eudendrium ramosum (Linnaeus, 1758), differing from it in the smaller size of the large microbasic euryteles. Longstanding problems in the systematics of eudendriid hydroids are noted, and the inadequacies of many early descriptions of species are discussed. The nematocysts provide a supplementary character for discrimination of species of Eudendrium, although information on the cnidome appears to have been sometimes misinterpreted in literature. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Hydrozoa; Systematics; Eudendrium; New species; Nematocysts. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/504171 |
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| Registros recuperados: 824 | |
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