phyla - the major divisions of a kingdom
phylogeny - the ordering of species into higher taxa based on evolutionary relationships; ...
Sub-phyla: Urochordata and Cephalochordata (Invertebrate chordates) ...
Phylum, Phyla (pl.): One of the major divisions of the animal kingdom.
Physical Control: Control of pests by physical means such as heat, cold, sound waves, etc.
Simphyla A class of arthropods whose members are characterized by having long antennae, 10 to 12 pairs of legs, and centipedelike bodies. Occupy soil and leaf mold.
phylum pl. phyla
[Gk. phylon, race, tribe]
A taxonomic category; phyla are divided into classes.
physiology ...
Most known animal phyla appeared in the fossil record as marine species during the Cambrian explosion, about 542 million years ago.
Contents
1 Etymology
2 Characteristics ...
The other platyzoan phyla are microscopic and pseudocoelomate. The most prominent are the Rotifera or rotifers, which are common in aqueous environments.
"Branched mitochondrial electron transport in the Animalia: presence of alternative oxidase in several animal phyla". IUBMB Life 56 (6): 333-41. PMID 15370881.
^ Sluse FE, Jarmuszkiewicz W (1998).
Deducing the evolutionary history of animals is particularly difficult because all the 24 or more phyla of animals appeared within a short time before and during the Cambrian and have since evolved along separate lines.
All major animal phyla, save the Bryozoans, have their first appearance during the Cambrian. One of the dominant animal groups that appeared was the trilobites.
Modern animals are classified into between 30 and 35 phyla: all major modern phyla were present at the beginning of the Cambrian, along with a great variety of now-extinct phyla recorded in the Burgess Shale (Cambrian) in Canada.
Bauplans (the word takes the English plural in this context) are the body plans of phyla, the second highest Linnaean taxonomic level.
[plural = phyla].
Class: a higher taxon consisting of one or more orders and distinct from other taxa of similar rank
Order: a higher taxon consisting of one or more families and distinct from other taxa of similar rank.
He then grouped genera into families, families into orders, orders into classes, classes into phyla, and phyla into kingdoms. Linn¯ identified two kingdoms: Animalia (animals) and Plantae (plants).
The next group that scientists have developed to further classify living things is the Phylum (plural: phyla). Life forms are grouped together based once again on how they are similar and how they are different.
Lynn Margulis, Five Kingdoms: An Illustrated Guide to the Phyla of Life on Earth, 3rd ed., St. Martin's Press, 1997, paperback, ISBN 0805072527 (many other editions) ...
The algae are further grouped into various phyla: Euglenophyta (euglenids), Chrysophyta (diatoms), Pyrrophyta (dinoflaggelates), Chlorophyta (green algae), Phaeophyta (brown algae), and Rhodophyta (red algae).
2. How this phylum is more advanced evolutionarily than other phyla.
3. Examples of organisms in this phyla.
4. How these organisms obtain food & oxygen, reproduce, move and protect themselves.
one of the main groups into which the animal and plant kingdoms are divided; plural, phyla
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
...
phylum -- n. A category in the hierarchy of animal classification between class and kingdom; phyla- pl.
ectoderm
The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and, in some phyla, to the nervous system, inner ear, and lens of the eye.
The first period in the Palaeozoic era marked by the occurrence of many forms of invertebrate life (540-500 Mya). The sudden appearance of the major animal phyla in the fossil record during the Cambrian period is called Cambrian explosion (the ...
A group of Metazoans that exhibit indeterminate, radial cleavage and that develop a mouth independent of, and at some distance from, the blastopore. (Echinoderms and Chordates and related minor phyla).
tend to share certain embryological traits; among these the formation of the "mouth first" (hence the name) during gastrulation, before the future anus. (The site of gastrulation initiation, the blastopore, becomes the mouth.) Major protostome phyla ...
The first mass extinction ended that period, but during the Cambrian Period which followed, an explosion of new forms began the evolutionary radiation that produced most of the major groups, or phyla, known today.
 See also: Organ, Animal, Animals, Plant, Life
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