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| | GfBS -Org. Divers. Evol. 2, Electr. Suppl. 5 (2002) |
 | | This is one of the first attempts to analyze the higher-level relationships of the Pycnogonida using cladistic techniques. | | | Higher-level phylogenetic relationships among the lineages of sea spiders are investigated using 36 morphological characters from 37 species from all extant families and a Devonian pycnogonid fossil. | | | However, traditional taxonomic characters need to be complemented by sets of anatomical, molecular and developmental data, among others, to produce more robust phylogenetic hypotheses on the higher- and lower-level relationships of the sea spiders. |
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http://www.senckenberg.de/odes/02-05.htm
(243 words)
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| | PYCNOGONIDA - LoveToKnow Article on PYCNOGONIDA |
| | They form a compact group, differing from all the other orders of Arachnida in certain structural characters of such morphological importance that it is impossible to affiliate them closely with any group of that class. | | | More important still is the circumstance that in the Pycnogonida there may be as many as seven pairs of leg-like limbs behind the mouth; but in the typical Arachnida there are never more than five such pairs. | | | The habits of all Pycnogonida appear to be very similar. |
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http://www.1911encyclopedia.org/P/PY/PYCNOGONIDA.htm
(1120 words)
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| | Pantopoda 1789-1995 |
| | Sericosura cochleifovea, a new hydrothermal vent species from the Marianas Back-Arc Basin." Proceedings of the biological Society Washington 102.3 (1989a): 732-737. | | | Calman, W. "The holotype of Ammothea carolinensis, Leach (Pycnogonida)." Annals and Magazien of natural History (8) 15 (1915a): 310-314. | | | Allman, G. "On a remarkable form of parasitism among the Pycnogonidae." Report of the British Association on the Advancement of Science 1859.1 (1859): 143. |
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http://franz.krapp.org/panto1.html
(5599 words)
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| | Sea Spiders: Class Pycnogonida |
| | Both of these may be absent as in the families Pycnogonidae and Endeidae. | | | How the animals use their palps is not fully understood, but they are believed to have sensory equipment at their tips and in some cases are used to help the animal align the proboscis. | | | These are found, in those species that have them, below the palpa, and a litle way back between them and the first walking legs. |
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http://www.earthlife.net/chelicerata/pycnogonida.html
(1974 words)
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| | Pycnogonida |
| | Larval development and morphogenesis of the sea spider Pycnogonum litorale (Ström, 1762) and the tagmosis of the body of Pantopoda. | | | Arango, C. Molecular approach to the phylogenetics of sea spiders (Arthropoda: Pycnogonida) using partial sequences of nuclear ribosomal DNA. | | | A larval sea spider (Arthropoda: Pycnogonida) from the Upper Cambrian 'Orsten' of Sweden, and the phylogenetic position of pycnogonids. |
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http://tolweb.org/tree?group=Pycnogonida&contgroup=Arthropoda
(495 words)
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| | Sea spider - Wikipedia, the free encyclopedia |
| | The order Pycnogonida consists of approximately 1000 species, which are normally split into eighty-six genera. | | | Sea spiders, also called Pantopoda or pycnogonids, are marine arthropods of class Pycnogonida. | | | Most are carnivorous and feed on cnidarians, hydroids, sponges, soft corals, polychaetes and bryozoans. |
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http://en.wikipedia.org/wiki/Sea_spider
(886 words)
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| | BIS: Macrobenthos of the North Sea - Pycnogonida > Introduction |
| | The Pycnogonida, or Pantopoda, is a small group of marine arthropods often referred to as sea spiders. | | | The name sea spider is derived from the somewhat spider-like appearance of these animals. | | | Select Next and Previous to navigate between subjects. |
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http://ip30.eti.uva.nl/bis/pycnogonida.php
(240 words)
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| | Chelicerata on Encyclopedia.com |
| | Chelicerates are characterized by the absence of antennae and jaws and the presence of feeding structures (chelicera), which are modified pincerlike appendages used mainly for grasping and fragmenting food. | | | These exclusively marine carnivores are spiderlike in appearance and range in body length from 4/100 in. | | | Members of class Pycnogonida are commonly known as sea spiders. |
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http://www.encyclopedia.com/html/C/Chelicer.asp
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| | AllRefer.com - sea spider (Zoology: Invertebrates) - Encyclopedia |
| | sea spider, common name for members of the class Pycnogonida, long-legged, rather spiderlike organisms of the phylum Chelicerata, widely distributed in marine waters. | | | Sea spiders are classified in the phylum Chelicerata, class Pycnogonida. | | | Members of this class are relatively common and widely distributed; well over 400 species are known. |
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http://reference.allrefer.com/encyclopedia/S/seaspide.html
(311 words)
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| | Nearctica - Natural History - Chelicerata - General |
| | The Chelicerata, in turn, have three major subdivisions: the Pycnogonida (Sea Spiders), Xiphosura (Horseshoe Crabs), and the largest group the Arachnida (spiders, mites, ticks, scorpions, etc.). | | | A short introduction to the Chelicerata with photographs and some information on biology, life history, morphology, systematics, and the fossil record. | | | A short introduction to the Pycnogonida with a key to the species found in the Woods Hole region of Massachusetts. |
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http://www.nearctica.com/nathist/chelic/chelic.htm
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| | Pycnogonida Web Page |
| | Most people do not even realize that they exist. | | | Sea spiders (Pycnogonida) are a fascinating but misunderstood group of arthropods. | | | Use of this material for private, academic or professional purposes is granted as long as the author is acknowledged and this web page is cited. |
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http://www.invertebrate.ws/seaspider
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| | Definition of pycnogonida - Merriam-Webster Online Dictionary |
| | pycnogonida is one of more than 1,000,000 entries available at Merriam-WebsterUnabridged.com. | | | For More Information on "pycnogonida" go to Britannica.com | | | Get the Top 10 Search Results for "pycnogonida" |
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http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=Pycnogonida
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| | Search Results for pycnogonida - Encyclopædia Britannica |
| | any of the spiderlike marine animals comprising the class Pycnogonida (also called Pantopoda) of the phylum Arthropoda. | | | Expand your search on pycnogonida with these databases: |
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http://www.britannica.com/search?query=pycnogonida&submit=Find&source=MWTEXT
(65 words)
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| | Pycnogonida |
| | There are about 500 species of sea spiders (class Pycnogonida; phylum Arthropoda). | | | They are chelicerates which feed primarily on cnidarians by sucking juices from the body. | | | This page was last updated on January 10, 1999. |
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http://tidepool.st.usm.edu/crswr/pycnogonid.html
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| | pycnogonida - definition by dict.die.net |
| | Many of them live at great depths in the sea, and the largest of them measure two feet across the extended legs. | | | Pycnogonida n : sea spiders [syn: Pycnogonida, order Pycnogonida] |
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http://dict.die.net/pycnogonida
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| | sea spider or Pycnogonids |
| | In this photo are also several small copepods (a type of very small shrimp-like crustacean); they are likely prey of the sea spider. | | | For further information, the University of California Museum of Paleontology maintains a page titled Introduction to the Pycnogonida. | | | The Melbourne Museum's Infozone features an info page with a video clip. |
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http://www.divegallery.com/sea_spider.htm
(372 words)
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| | [No title] |
| | Sea Spiders: A Revised Key to the Adults of Littoral Pycnogonida |
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http://www.nhbs.com/we-sell-books-worldwide/z435az.html
(68 words)
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| | Find in a Library: Pycnogonida of western Australia |
| | Find in a Library: Pycnogonida of western Australia | | | WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries. |
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http://www.worldcatlibraries.org/wcpa/ow/d76d96ce30369fe3.html
(52 words)
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| | I.E.P.A. Search Directory |
| | I.E.P.A. Top: Science: Biology: Flora_and_Fauna: Animalia: Arthropoda: Pycnogonida: | | | Help build the largest human-edited directory on the web. |
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http://internationalepublishersassociation.com/directory/index.php?c=/Science/Biology/Flora_and_Fauna/Animalia/Arthropoda/Pycnogonida
(56 words)
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| | Pycnogonida - Wikispecies |
| | This page was last modified 01:53, 25 July 2005. | | | Familia: Ammotheidae - Austrodecidae - Callipallenidae - Colossendeidae - Nymphonidae - Phoxichilidiidae - Pycnogonidae - Rhynchothoracidae |
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http://species.wikipedia.org/wiki/Pycnogonida
(33 words)
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| | [No title] |
| | Class Pycnogonida - Nomenclature & Taxonomy - The Taxonomicon |
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http://sn2000.taxonomy.nl/Taxonomicon/TaxonName.aspx?id=17047&showSyn=1
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