Siti

Pogonophora - English
URL: http://phylogeny.arizona.edu/tree/eukaryotes/animals/pogonophora/pogonophora.htm

Part of Tree of Life - Classification from Brusca and Brusca (1990).

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Introduction to the Pogonophora - English
URL: http://www.ucmp.berkeley.edu/annelida/pogonophora.html

About 80 pogonophoran species are known today, with new species still being discovered. One of the most spectacular zoological discoveries of recent years was the finding in 1977 of giant pogonophoran worms, 1.5 meters long, growing in heated, sulfur-rich water around warm-water vents in the Pacific Ocean, 2600 meters below the surface (pictured at right). These worms are sometimes placed in their own phylum, the Vestimentifera, but they are similar to pogonophorans in most respects, and the current tendency is to group these rift-dwelling worms together with the rest of the Pogonophora into one phylum.

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GIF image 236x384 pixels - English
URL: http://seawifs.gsfc.nasa.gov/OCEAN_PLANET/IMAGES/G-509.gif

Photo.

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Tube worms [This Dynamic Earth, USGS] - English
URL: http://pubs.usgs.gov/publications//text/tube_worms.html

Photo.

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Animals - CACB Biota - English
URL: http://www.uwgb.edu/biodiversity/biota/Animals.htm

Diversity of Animals, History of Animals, Links.

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Natural History - Phylogeny - English
URL: http://www.nearctica.com/nathist/phylog.htm

The phylogeny of living organisms has changed dramatically in the past few years. As a consequence you will find that different sites may given different, and sometimes conflicting, systematic arrangements for the same group of organisms. No where is this more true than for the "lower organisms", i.e. those groups traditionally treated as bacteria, protozoans, algae and fungi. The traditional older arrangement divided live into two main group; the Monera (bacteria and blue-green algae) and the Eucaryotes (protozoa, algae, plants, fungi, and animals). This older scheme was surplanted by the so-called "Five Kingdom Classification" created by Robert Whittaker.

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