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Topics related to "Subphylum"

notochord
notochord , in biology, supporting rod running most of the length of animals of the phylum Chordata and present at varying times in the life cycle. Composed of large cells packed within a firm connective tissue sheath, the notochord lies between the neural tube (spinal cord) and the gut. The divis... Read more
bushmaster
bushmaster large venomous snake, Lachesis muta, of Central America and N South America. It is a member of the pit viper family, which also includes the rattlesnake. The largest New World snake, it reaches a length of 8 to 12 ft (2.5-5.5 m). It is gray and brown, with a diamond pattern. Unlike m... Read more
buzzard
buzzard common name for hawks of the genus Buteo and the genus Pernis, or honey buzzard, of the Old World family Accipitridae. Honey buzzards feed on insects, wasp and bumblebee larvae, and small reptiles. The name buzzard is also incorrectly applied to various hawks and New World vultures, suc... Read more
caracal
caracal or Persian lynx, mammal of the family Felidae (cat family), native to Asia and Africa. It is reddish brown with black-tufted ears. Its total length is about 3 1/4 ft (105 cm). It preys on small deer, hares, birds, and other animals. Active mainly at twilight, it will hunt during the ... Read more
junco
junco or snowbird, small seed-eating bird of North America closely related to the sparrows . Juncos have white underparts and gray (sometimes also brown) backs. They travel in flocks. The dark-eyed junco is the most common species, comprising in E North America the subgroup sometimes called th... Read more
killdeer
killdeer common North American shorebird related to the plover and the sandpiper . It is about 10 in. (25 cm) in length and its plumage is grayish brown with a double black band across a white breast. Its simple nest is a depression in the soil or gravel. The killdeer is classified in the phylum... Read more
nuthatch
nuthatch , common name applied to a number of Old and New World species of small birds of the genus Sitta, related to the titmouse and the creeper. The name refers to its habit of wedging nuts into crevices in trees and pecking them open. Nuthatches are unique in that they climb down tree trunks h... Read more
osprey
osprey , common name for a bird of prey related to the hawk and the New World vulture and found near water in most parts of the world. The American osprey, or fish hawk, Pandion haliaetus, has white underparts and a wingspread of 5 to 6 ft (152 to 183 cm). It feeds solely on live fish and is usual... Read more
ovenbird
ovenbird common name for a member of the family Furnariidae, primitive passerine birds, which build elaborate, domed nests of clay or dig tunnels in the ground to lay their eggs. Ovenbirds are most common in South America, where most are forest dwellers, although a few species are found on the coas... Read more
rook
rook term used for a common Eurasian bird (genus Corvus ) of the family Corvidae ( Crow family), smaller than the American crow. The jackdaw is a European species of the genus. Rooks nest in large colonies, whence the term rookery. They are classified in the phylum Chordata , subphylum Vertebr... Read more

Encyclopedia entries related to "Subphylum"

Chordata
Book article from: The Columbia Encyclopedia, Sixth Edition ...vertebrates—animals of the subphylum Vertebrata—a backbone...There are two invertebrate subphyla: the Urochordata, or tunicates...been considered a chordate subphylum, but is now often classified...its own, the Hemichordata . Subphylum Urochordata The tunicates...
notochord
Book article from: The Columbia Encyclopedia, Sixth Edition ...of the phylum Chordata into subphyla is based on the structure...which it is present: In the subphylum Urochordata (tunicates...extend into the head; in the subphylum Cephalochordata (lancelets...young and adults; and in the subphylum Vertebrata the notochord becomes...
Arthropoda
Book article from: The Columbia Encyclopedia, Sixth Edition ...representatives are well known. There are three subphyla, comprising nine classes. Subphylum Trilobita The trilobites comprise a wholly...fossil trilobite common in the Ordovician seas. Subphylum Mandibulata The mandibulates constitute the...
echinoderms
Book article from: The Oxford Companion to the Earth ...traditionally been divided into five subphyla of fossil and modern forms, based on...recognized in the classification. Of the five subphyla of the traditional scheme, the first...bottom-dwelling) forms. The second subphylum, the Asterozoa, includes the starfish...
animal
Book article from: The Columbia Encyclopedia, Sixth Edition ...comprises numerous invertebrate phyla and the phylum Chordata . The chordates include two primitive subphyla of a few species each and the subphylum Vertebrata (see vertebrate ). There are at least 1.5 million animal species; approximately 95...
crustacean
Book article from: The Columbia Encyclopedia, Sixth Edition crustacean , primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crustacean species are marine...segments of the female. Classification Crustaceans constitute the subphylum Crustacea of the phylum Arthropoda .
taxonomy
Book article from: World Encyclopedia ...genus , species (the last two of which appear in italics ), and sometimes variety. In some categories, there are also subphyla, subfamilies, and so on. Ancient and extinct animals and plants are included in detailed classifications. See also phylogenetics...
trilobites and related fossils
Book article from: The Oxford Companion to the Earth ...eurypterids; and finally the Trilobita. In other schemes the phylum Arthropoda is retained and the major taxa are given subphylum or class status. The trilobites are divided into nine orders according to the morphology of the dorsal exoskeletons, and...
Chordates
Encyclopedia entry from: The Gale Encyclopedia of Science ...Chordates Chordates are a diverse group of animals that comprise the phylum Chordata. The phylum is divided into three subphyla based on general physical characteristics: Urochordata, Cephalochordata, and Vertebrata. Urochordates have a notochord...
Copepods
Encyclopedia entry from: The Gale Encyclopedia of Science ...million identified species. The true number of arthropods may actually be in the tens of millions. Within this phylum, the subphylum Crustacea contains at least 45,000 species. Although the classification of the group has been somewhat fluid, six classes...

Dictionary entries related to "Subphylum"

Chordata
Book article from: A Dictionary of Biology ...the pharynx. There are four subphyla: the Urochordata (sea squirts...classifications the two nonvertebrate subphyla are elevated to the status...Craniata, containing a single subphylum, Vertebrata. The old subphyla Agnatha and Gnathostomata...
Chelicerata
Book article from: A Dictionary of Zoology Chelicerata (phylum Arthropoda ) A subphylum of arthropods in which the body comprises...structures are the chelicerae that give the subphylum its name, and there are no antennae...horseshoe crabs ( Merostomata ). The subphylum includes the classes Arachnida , Merostomata...
Entoprocta
Book article from: A Dictionary of Earth Sciences Entoprocta (phylum Bryozoa ) Subphylum of freshwater bryozoans which entirely lack a mineralized skeleton...the anus and the mouth. Many fossil forms are known, but the subphylum is known only from the Cenozoic . Formerly the Entoprocta was...
Eleutherozoa
Book article from: A Dictionary of Zoology Eleutherozoa (phylum Echinodermata) Ranked previously as a subphylum, a term that is now used only informally, to denote free-living echinoderms. These include the subphyla Asterozoa and Echinozoa .
Crinozoa
Book article from: A Dictionary of Zoology Crinozoa (phylum Echinodermata) A subphylum of echinoderms that have radial symmetry, a tendency to produce...which support exothecal extensions of feeding ambulacra . The subphylum includes eight classes, seven of which were extinct by the...
Homalozoa
Book article from: A Dictionary of Earth Sciences ...x2018; carpoids ’; phylum Echinodermata ) Extinct subphylum whose members have no trace of radial symmetry . The theca...by R. P. S. Jeffries on morphological grounds to a new subphylum of primitive chordates, the Calcichordata. The matter remains...
Atelocerata
Book article from: A Dictionary of Zoology Atelocerata (phylum Arthropoda ) A subphylum that contains those classes formerly assigned to the subphylum Uniramia .
Stelleroidea
Book article from: A Dictionary of Zoology Stelleroidea (phylum Echinodermata , subphylum Asterozoa ) The only class in its subphylum, comprising echinoderms that are star-shaped and radially symmetrical.
Uniramia
Book article from: A Dictionary of Zoology Uniramia Formerly a phylum or a subphylum of Arthropoda , in which the appendages are unbranched (i.e. uniramous) and...informal use of Uniramia has been abandoned, with its members reallocated to the subphylum Atelocerata.
Phytomastigophora
Book article from: A Dictionary of Plant Sciences Phytomastigophora (subphylum Mastigophora) In protozoan classification, a class of flagellated, plant-like microscopic organisms which typically possess...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Zooflagellate phylogeny and the systematics of protozoa.(Evolution: A Molecular Point of View)(includes discussion)
Magazine article from: The Biological Bulletin; 6/1/1999; ; 700+ words ; ...Archamoebae, grouped together as subphylum Conosa within the Amoebozoa...Colpodella are now placed in the subphylum Protalveolata of the Dinozoa...Microsporidia to Sporozoa, as the subphylum Manubrispora; they are probably...created Neomonada comprise three subphyla: Choanozoa (choanoflagellates...
A high-affinity hemoglobin is expressed in the notochord of amphioxus, Branchiostoma californiense.
Magazine article from: The Biological Bulletin; 12/1/1998; ; 700+ words ; ...universally expressed in members of the subphylum Vertebrata, it has not been identified in any members of the subphyla Urochordata or Cephalochordata. However...of Mexico, Branchiostoma floridae (Subphylum Cephalochordata). We verified this...
Waking Up to the Dawn of Vertebrates.(fossil remains of earliest know fish found in China)(Brief Article)
Magazine article from: Science News; 11/6/1999; ; 700+ words ; ...features that would provide them entree into the vertebrate subphylum. Instead, they resemble the living invertebrate called amphioxus...skeleton and teeth seen in most, but not ail, members of this subphylum today. Instead, these early jawless fish appear to have...
Fungal CSL transcription factors.(Research article)(Report)
Magazine article from: BMC Genomics; 7/13/2007; ; 700+ words ; ...and S. japonicus belonging to the Taphrinomycotina basal subphylum of ascomycetes, Rhizopus oryzae representing the zygomycetes...Saccharomyces cerevisiae ) or Pezizomycotina, the later branching subphyla of ascomycetes. Table 1 caption: Fungal CSL proteins [table...
Systematic sequencing of mRNA from the Antarctic krill ( Euphausia superba ) and first tissue specific transcriptional signature.(Research article)(Ribonucleic acid)
Magazine article from: BMC Genomics; 1/28/2008; ; 700+ words ; ...oxidase subunit I ) and of phototransduction ( opsin ). In the subphylum Crustacea there are 33 complete (or nearly complete) mitochondrial...complete or nearly complete mitochondrial DNA sequences of the subphylum Crustacea available from public databases at November 2007...
Biological identifications through DNA barcodes: the case of the Crustacea.
Magazine article from: Canadian Journal of Fisheries and Aquatic Sciences; 2/1/2007; ; 700+ words ; ...animals such as insects, birds, and fishes, but not for the subphylum Crustacea, one of the most diverse groups of arthropods...issue by examining the patterning of COI diversity in the subphylum Crustacea, the most ancient and structurally diverse group...
Consensus translational initiation sites of marine invertebrate phyla.
Magazine article from: The Biological Bulletin; 12/1/1998; ; 700+ words ; ...cDNAs from several major marine invertebrate taxa (phylum or subphylum) that have been diverging for many millions of years. We...1053), Mollusca (1365), Annelida (270), and the subphylum Crustacea (690). Because many of the sequences analyzed...
Data on eukaryotic research described by researchers at University of Oxford.
Newspaper article from: Life Science Weekly; 4/7/2009; 700+ words ; ...Oxford (see also Eukaryotic Research). The researchers concluded: "New subphyla are established for Choanozoa and Loukozoa; Amoebozoa are divided into three revised subphyla, with Variosea transferred into Conosa." Cavaliersmith and colleagues...
A NEW, PHYLOGENETICALLY SIGNIFICANT EARLY ORDOVICIAN ASTEROID (ECHINODERMATA)
Magazine article from: Journal of Paleontology; 11/1/2007; ; 700+ words ; ...Because of these constraints, the origin and early history of subphylum diversification is not well understood. The recently discovered...Stelleroidea was the only class these authors assigned to the subphylum Asterozoa Zittel, 1895. General usage seems to prefer recognition...
Findings from Azabu University provide new insights into microbiology.
Newspaper article from: Science Letter; 3/10/2009; 700+ words ; ...Catenibacterium mitsuokai belong to cluster XVII of the Clostridium subphylum. Strain ST18(T) was most closely related to L. catenaformis...novel species of a new genus belonging to the Clostridium subphylum cluster XVII, for which the name Sharpea azabuensis gen...