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Topic: Lobopodia

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  Lobopodia - Wikipedia, the free encyclopedia
Lobopodia are a collection of poorly understood animals from the Early Cambrian -- the beginning of well fossilized animal life.
The famous Hallucigenia from the Cambrian-age Burgess Shales was once considered to belong to the family Lobopodia, but is now recognized as an Onychophoran, a relative of the velvet worms.
The name lobopodia is also used for lobose pseudopods, found among certain amoeboids.
en.wikipedia.org /wiki/Lobopodia   (221 words)

 Lobopodia -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-21)
Lobopodia are a collection of poorly understood animals from the Early (From 544 million to about 500 million years ago; marine invertebrates) Cambrian -- the beginning of well fossilized animal life.
They include animals that are segmented, have (or might have) legs, and do not fit easily into the phylum (Invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin) arthropoda.
The name lobopodia is also used for lobose (Temporary outgrowth used by some microorganisms as an organ of feeding or locomotion) pseudopods, found among certain (Click link for more info and facts about amoeboid) amoeboids.
www.absoluteastronomy.com /encyclopedia/L/Lo/Lobopodia.htm   (211 words)

 ameba. The Columbia Encyclopedia, Sixth Edition. 2001-05   (Site not responding. Last check: 2007-10-21)
Amebas constantly change the shape of their bodies as a result of the phenomenon known as ameboid movement, involving the formation of temporary extensions (pseudopodia, or false feet) of the body.
Pseudopodia, used in locomotion and feeding, may be rounded at the tip (lobopodia), pointed (filopodia), branched and fused together (rhizopodia), or somewhat rigid and pointed (axopodia).
Although simple in form, amebas are very successful organisms and are found abundantly in a variety of habitats all over the world.
www.bartleby.com /65/am/ameba.html   (572 words)

 Title of Invention: Microorganisms and methods for degrading plant cell walls and complex hydrocarbons
Lobopodia were most common on flat, attached cells, where they were used for movement.
Lobopodia were round and were not observed in association with these cone-like protrusions.
Lobopodia used + + + for feeding and movement 18.
www.nal.usda.gov /bic/Biotech_Patents/1995patents/05413933.html   (6673 words)

 [No title]
The more fluid endoplasm moves forward due to the pressure of the contracting ectoplasm resulting in a recurrent outward flow of ectoplasm from the rear of the cell in the direction of the forming pseudopod.
Pseudopods are assigned to one of several types with the lobopodia (blunt and composed of both ectoplasm and endoplasm) being the most common in parasitic species.
Although pseudopods are a distinguishing characteristic of amoebae trophozoites, some flagellates can also produce pseudopodial movement (some amoebae also have flagella during some stage of their development).
www.cvm.okstate.edu /instruction/kocan/vpar5333/5333iia.htm   (870 words)

B is a magnified view of a larva similar to (A).
Distal-less expression was also found in ampullae of ascidians and in onychophoran lobopodia and antennae.
In onychophorans, expression of the Distal-less (as measured by antibodies to the Distal-less protein) was found in segmentally patterned ectodermal cell nuclei prior to metamorphosis.
zygote.swarthmore.edu /evo8.html   (818 words)

 Microdictyon biography .ms   (Site not responding. Last check: 2007-10-21)
Microdictyon is an extinct "armored worm" coated with dot-like scleritic scales, known from the Early Cambrian Maotianshan shale of Yunnan China.
Microdictyon is sometimes included in a somewhat ill-defined Phylum – Lobopodia – that includes several other odd worm-like and segmented free-swimming animals that do not appear to be arthropods or worms.
The isolated sclerites of Microdictyon are known from other Lower Cambrian deposits.
microdictyon.biography.ms   (155 words)

 The origin and evolution of animalĀ appendages -- Panganiban et al. 94 (10): 5162 -- Proceedings of the National ...
lobopodia, ascidian ampullae, and even echinoderm tube feet.
be the forerunners of lobopodia, as has sometimes been proposed
for the origin of parapodia and lobopodia is that they were independently
www.pnas.org /cgi/content/full/94/10/5162   (3830 words)

 PPT Slide   (Site not responding. Last check: 2007-10-21)
When organisms like amoeba are feeding and moving, they form temporary cell extensions called pseudopodia
The most familiar form are called lobopodia: contain ectoplasm and endoplasm; used for locomotion and engulfing food
When a lobopodium forms, an extension of the ectoplasm called the hyaline cap appears and endoplasm flows into this cap
faculty.evansville.edu /de3/b10802/PPoint/Protista/tsld013.htm   (87 words)

 Dorlands Medical Dictionary
The manufacturer of a product generally has the most complete information about that product.
of arca box, chest] a genus of ameboid protozoa (order Arcellinida, subclass Testacealobosia) characterized by the presence of a few slender lobopodia and a transparent test to which the body of the organism is attached by numerous strands of ectoplasm.
(ahr”sə-lin´ĭ-də) an order of free-living protozoa (subclass Testacealobosia, class Lobosea) comprising those amebas enclosed in a test, tectum, or other external membrane that is composed of either organic or inorganic material or both and has a definite aperture through which pseudopodia (lobopodia or filopodia) can be extruded.
www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_a_57zPzhtm   (1673 words)

 type_Document_Title_here   (Site not responding. Last check: 2007-10-21)
The type of pseudopod formed by members of the phylum Foraminifera: A. axopoda B. filopodia C. lobopodia D. reticulopodia E. all of the above _____2.
Macroalgae of deep, cold marine waters, red algae are members of which phylum?
In fungi, the multicellular, thread-like growth form is known as: A. primary growth B. mycelium.
www.auburn.edu /academic/classes/biol/1030/folkerts/bonus1.html   (204 words)

 Onset of Electrical Excitability during a Period of Circus Plasma Membrane Movements in Differentiating Xenopus Neurons ...   (Site not responding. Last check: 2007-10-21)
Key words: Xenopus spinal neurons; circus movements; lobopodia; early neuronal marker; sodium currents; calcium currents; potassium currents
In a given circus cell, lobopodia traveled either counterclockwise (Fig.
Circus movements were also capable of generating force, because lobopodia were capable of displacing loosely adherent neighboring cells, as observed previously (Johnson, 1976
www.jneurosci.org /cgi/content/full/16/16/5117   (9796 words)

 Evolution   (Site not responding. Last check: 2007-10-21)
Elements of actin and myosin associated with the cytoplasmic skeleton aid in the projection of cytoplasm characteristic of this kind of movement which is usually used for food intake (endocytosis) and movement of the organism from one place to another.
Rhizopoda - Lobopodia amoeba " permission granted by Biodidac
Actinopoda: Actinopoda, also known as Radiolarians, have quite a distinctly different body structure than their cousins, the amoebas.
www.personal.psu.edu /users/j/k/jks202/evolution.html   (654 words)

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