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What is a Singleton? - Future of Humanity Institute
What is a Singleton? - Future of Humanity Institute

... units of decision-making, such as states, can also turn bad. But if a singleton goes bad, a whole civilization goes bad. All the eggs are in one basket. Furthermore, in a less coordinated world order, there are some processes that limit the destructiveness of certain kinds of failures. For example, ...
Cnidaria - WordPress.com
Cnidaria - WordPress.com

... • Polymorphism- some species of cnidarians have more than one morphological kind of individual • Polyp (hydroid) =sessile • Medusa (jellyfish)= free-living ...
Philander opossum. - Mammalian Species
Philander opossum. - Mammalian Species

... DIAGNOSIS. Philander opossum (Fig. 1) can be differentiated from other species of the genus as follows: P. opossum has a white chin with a darker upper labia, a whitish belly and feet, a small tail, short and soft hair, and a nearly uniform grayish brown dorsum. This contrasts with the almost entire ...
Cnidaria - Zoology Lab
Cnidaria - Zoology Lab

... Main characteristics of cnidarians are: • Polymorphism- some species of cnidarians have more than one morphological kind of individual • Polyp (hydroid) =sessile • Medusa (jellyfish)= free-living ...
Bajar aqui
Bajar aqui

... Main characteristics of cnidarians are: • Polymorphism- some species of cnidarians have more than one morphological kind of individual • Polyp (hydroid) =sessile • Medusa (jellyfish)= free-living ...
THE BIOLOGY OF PHORONIDA
THE BIOLOGY OF PHORONIDA

... recently been discovered by Zimmer (1967): the general term lophophoral organs overlaps the male and female accessory sex glands, respectively lophophoral organs (seasu stricto) and nidamental glands (in brooding species). The development of both sex glands is correlated with gonad maturation. The l ...
Thomomys talpoides.
Thomomys talpoides.

... GENERAL CHARACTERS. As in other members of the family (Hill, 1937; Holliger, 1916), T. talpoides is a powerfully built mammal adapted to fossorial environments and characterized by heavily muscled head and shoulders without a noticeable neck, body tapering posteriorly to relatively narrow hips, shor ...
Radially symmetric animals Radially symmetric animals Phylum
Radially symmetric animals Radially symmetric animals Phylum

... Some species reproduce both asexually and sexually ...
PHYLUM-CHAETOGNATHA - NIO Bioinformatics Website
PHYLUM-CHAETOGNATHA - NIO Bioinformatics Website

... number of striking differences among the specimens. Thus, the highest rank which might be used in grouping the integrants of this phylum is that of genus. Further more, the species included in each of the genera are separated by means of slight differences in the position of the various morphologica ...
Proceratium (Hymenoptera, Formicidae) in the Afrotropical P. arnoldi
Proceratium (Hymenoptera, Formicidae) in the Afrotropical P. arnoldi

... bit better, even though they are also only known from a few localities each. The widest known distribution is seen in P. lunatum, which occurs in Cameroon and Gabon, but is also found in Uganda. We expect that this species will also be found in the rainforests of the Democratic Republic of Congo, Co ...
J. Kuijt. New synonyms and comments on Phoradendron
J. Kuijt. New synonyms and comments on Phoradendron

... The holotype at US as well as the isotypes at MEXU, MO, and UC are missing, and I have not been able to resolve the issue at IBUG and FPF. A neotype therefore needs to be designated. Since Wiens, in 2012, (erroneously) annotated all four of these sheets as “type specimens”, it is appropriate to foll ...
Tardigrades of the Taimyr peninsula with descriptions of two new
Tardigrades of the Taimyr peninsula with descriptions of two new

... 4 aggregations) from Dikson Is. and mainland are very similar to those mentioned above except for one feature - the absence or invisibility of any tiny granules forming dots (Fig. 2F). Finally, 8 specimens from 3 samples (2lichens, 1 aggregation),from Dikson Is. and mainland, are similar to those me ...
The Phylum Ctenophora
The Phylum Ctenophora

... Adults of most species can regenerate tissues that are damaged or removed, [7] although only platyctenids reproduce by cloning, splitting off from the edges of their flat bodies fragments that develop into new individuals. [5] Almost all species are hermaphrodites, in other words they function as bo ...
Rockfish - Western Washington University
Rockfish - Western Washington University

... Bright yellow iris. Spines located between eyesm and rough parallel ridges on nape, whereas S. proriger does not have spines or ridges. Natural History Information Yelloweye rockfish have very low resilience with a minimum population doubling time of fourteen years. The oldest of this species record ...
A new species of ferret-badger, Genus Melogale, from Vietnam
A new species of ferret-badger, Genus Melogale, from Vietnam

... personata by Everts, 1967 and clear correlation of age and development of crest in different species of Melogale is not known. Dentition. The dental formula is like other Melogale species: I3/3, C1/1, P4/4, M1/2 = 38. Size and relation of P1 and P2 , and also of P4 and M1 is an important feature for ...
Ch10Taxonomy10
Ch10Taxonomy10

... Hierarchy of taxonomic ranks now includes 7 major groups  Kingdom, phylum, class, order, family, genus, and species Now, the new level of Domain is also used. All animals are placed in Kingdom Animalia, or Domain Eukarya Taxa (Taxon) - Groups of animals that share a particular set of characteristic ...
Document
Document

... Hierarchy of taxonomic ranks now includes 7 major groups  Kingdom, phylum, class, order, family, genus, and species Now, the new level of Domain is also used. All animals are placed in Kingdom Animalia, or Domain Eukarya Taxa (Taxon) - Groups of animals that share a particular set of characteristic ...
Ch10Taxonomy
Ch10Taxonomy

... His classification scheme has been drastically altered, but the basic principle is still followed ...
Tympanocryptis lineata
Tympanocryptis lineata

... Like most agamids, T. lineata is a heliotherm diurnal sit-and-wait predator. However, it has once been observed at night. It feeds mainly on small arthropods. T. lineata is exclusively terrestrial, and its colour exhibits a close substrate matching. As other members of the genus, T. lineata can cont ...
Document
Document

... • The discipline of systematics classifies organisms and determines their evolutionary relationships • Systematists use fossil, molecular, and genetic data to infer evolutionary relationships ...
Nudibranquios (orden Nudibranchia)
Nudibranquios (orden Nudibranchia)

... curved teeth, to scrape or tear food particles. They feed on species such as hydroids, sea anemones, corals, sponges and fish eggs. Each species of nudibranch usually specializes on one specific sessile animal on which to feed. Nudibranchs move or “crawl” by ciliary action or the muscular action of ...
September 2005 Newsletter - Transvaal Herpetological Association
September 2005 Newsletter - Transvaal Herpetological Association

... imperator), “SS Male”, induced ovulation in the female Colombian Boa Constrictor (Boa constrictor imperator) deemed “BCI03CFU”. The retained sperm from “WT Male” then likely fertilized the ova of “BCI03CFU”. Given the extended time of probable sperm retention, the majority of the sperm cells seem as ...
5. description of the study animals
5. description of the study animals

... Western parts of Indian Ocean, Gulf of Aden, Gulf of Oman, limitedly distributed in Red Sea, in Persian Gulf. Indian Ocean (northern and western parts , Gulf of Aden, Gulf of Oman, but not apparently not Red Sea or the :Gulf” eastward to southern part of India, on eastern coast to Andhra; possibly t ...
kingdom:animalia phylum:chordata class:graptolithina
kingdom:animalia phylum:chordata class:graptolithina

... fossil record (in the Cambrian period), and were generally benthic animals (attached to the sea-floor by a root-like base). Graptolites with relatively few branches were derived from the dendroid graptolites at the beginning of the Ordovician period. This latter type (order Graptoloidea) were pelagi ...
zootaxa - It Rains Fishes
zootaxa - It Rains Fishes

... collections in habitats that normally are not part of larger systematic surveys. Rivulid habitats are largely non-overlapping even with those of small ostariophysin species, since rivulids often live in single-species communities in extremely shallow headwaters of creeks, or in peripheral leaf litte ...
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International Code of Zoological Nomenclature

The International Code of Zoological Nomenclature (ICZN or ICZN Code) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. The rules principally regulate: How names are correctly established in the frame of binominal nomenclature Which name must be used in case of name conflicts How scientific literature must cite namesZoological nomenclature is independent of other systems of nomenclature, for example botanical nomenclature. This implies that animals can have the same generic names as plants.The rules and recommendations have one fundamental aim: to provide the maximum universality and continuity in the naming of all animals, except where taxonomic judgment dictates otherwise. The Code is meant to guide only the nomenclature of animals, while leaving zoologists freedom in classifying new taxa.In other words, whether a species itself is or is not a recognized entity is a subjective decision, but what name should be applied to it is not. The Code applies only to the latter, not to the former. A new animal name published without adherence to the Code may be deemed simply ""unavailable"" if it fails to meet certain criteria, or fall entirely out of the province of science (e.g., the ""scientific name"" for the Loch Ness Monster).The rules in the Code determine what names are valid for any taxon in the family group, genus group, and species group. It has additional (but more limited) provisions on names in higher ranks. The Code recognizes no case law. Any dispute is decided first by applying the Code directly, and not by reference to precedent.The Code is also retroactive or retrospective, which means that previous editions of the Code, or previous other rules and conventions have no force any more today, and the nomenclatural acts published 'back in the old times' must be evaluated only under the present edition of the Code. In cases of disputes concerning the interpretation, the usual procedure is to consult the French Code, lastly a case can be brought to the Commission who has the right to publish a final decision.
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