1. ADW: Arthropoda: Information Philip Myers's introduction to Phylum arthropoda, from the Animal Diversity Web. http://animaldiversity.ummz.umich.edu/arthropoda.html

Overview News Conditions of Use ADW Staff ... Home Kingdom Animalia Phylum Arthropoda Phylum Arthropoda (insects, crustaceans, spiders, and relatives) Information Pictures Specimens Sounds ... Classification editLink('skunkworks/.accounts/200310302028') 2004/05/18 13:28:15.364 GMT-4 By Phil Myers Kingdom: Animalia Phylum: Arthropoda Members of this Phylum Arthropods include an incredibly diverse group of taxa such as insects, crustaceans, spiders, scorpions, and centipedes. There are far more species of arthropods than species in all other phyla combined, and the number of undescribed species in the largest assemblage of arthropods, the insects, probably numbers in the tens of millions. Members of the phylum have been responsible for the most devastating plagues and famines mankind has known. Yet other species of arthropods are essential for our existence, directly or indirectly providing us with food, clothing, medicines, and protection from harmful organisms. The systematic relationships of arthropod groups is not fully understood, which is not surprising given the size and diversity of the phylum. Here, we will follow the scheme recommended by Hickman and Roberts (1994), supplemented with information from Brusca and Brusca (1990), Pearse et al. (1987) and lectures by R. D. Alexander. Subphylum Chelicerata Class Merostomata (horseshoe crabs, eurypterids)

2. Natural Perspective: Joint-Legs (Phylum Arthropoda) Page 32 of 38. Natural Perspective. The Animal Kingdom JointLegs (arthropoda) ( Last modified 21 July 1997) arthropoda, the jointed leg spineless creatures of the world, are among the most maligned of all animals. http://www.perspective.com/nature/animalia/arthropoda.html

Page 32 of 38 Natural Perspective The Animal Kingdom : Joint-Legs ( Arthropoda (Last modified: 21 July 1997) Arthropoda , the jointed leg spineless creatures of the world, are among the most maligned of all animals. This rule is not universal, of course. Many people adore Butterflies of the Order Lepidoptera and the ancient Egyptians even worshipped the Scarab Beetle of Order Coleoptera but on the whole, when modern governments spend money on Arthropods it is to find a way of eradicating them. Never-the-less, the "bugs" of this phylum have served an important role in the history of this planet, whether as carriers of the most devastating plagues in human history or for enabling the parallel evolution of our beautiful flowering plants. This large group of bugs and crustacians numbers 500,000 strong by today's counts. Scientists believe that up to 10,000,000 Arthropod species are alive today. Insects ( Class Insecta The majority of Arthropoda 290,000 species are insects. This includes the moth and stinkbug, pictured here as well as ants, bees, beetles, butterflies, flies, grashoppers, wasps and a whole lot more. Arachnids ( Class Arachnida Arachnids are eight-legged creatures including spiders, scorpions, and ticks.

3. Introduction To The Arthropoda Introduction to the arthropoda. . . . the REAL rulers of the Earth.. . Click on the buttons below to learn more about the arthropoda. http://www.ucmp.berkeley.edu/arthropoda/arthropoda.html

Introduction to the Arthropoda . . . the REAL rulers of the Earth. . . B y nearly any measure, the most successful animals on the planet are the arthropods. They have conquered land, sea and air, and make up over three-fourths of all currently known living and fossil organisms, or over one million species in all. Since many arthropod species remain undocumented or undiscovered, especially in tropical rain forests, the true number of living arthropod species is probably in the tens of millions. One recent conservative estimate puts the number of arthropod species in tropical forests at 6 to 9 million species (Thomas, 1990). Arthropods range in distribution from the deep sea to mountain peaks, in size from the king crab with its 12-foot armspan to microscopic insects and crustaceans , and in taste from chocolate covered ants to crawfish jambalaya and lobster Newburg. Despite this unbelievable diversity, the basic body plan of arthropods is fairly constant. Arthropods have a stiff cuticle made largely of chitin and proteins, forming an exoskeleton that may or may not be further stiffened with calcium carbonate. They have segmented bodies and show various patterns of segment fusion (

4. Systematics Of The Arthropoda Systematics of the arthropoda. 1992. Annelida and arthropoda are not sistertaxa a phylogenetic analysis of spiralian metazoan morphology. http://www.ucmp.berkeley.edu/arthropoda/arthropodasy.html

Systematics of the Arthropoda Move deeper into the systematics of arthropod groups by selecting one of the boxes containing a picture! A rthropods have traditionally been divided into four classes: Trilobita Chelicerata , Crustacea, and Uniramia . Most living and post-Cambrian fossil arthropods fall into one of these four classes. However, a number of arthropod fossils from the Cambrian Period have been described which do not obviously belong in any of these classes. Many of these arthropods have been found in the famous Middle Cambrian Burgess Shale , in the Canadian Rocky Mountains of British Columbia. Other "weird wonder" arthropods have been found in China, Australia, Russia, Poland, and the USA. (See Gould, 1989, for an overview.) Recent work (Wills et al. 1994) has shown that these arthropods are mostly in "stem clades"- that is, they are extinct relatives of living arthropods that lack some of the characters that typify groups with living members. The cladogram we present here is thus something of an oversimplification. Debate as to which living phyla are the closest relatives of arthropods continues to rage. Arthropods were once considered to be close relatives of

5. Phylum Arthropoda Phylum arthropoda. Image below curtesy of Northwest Pests. arthropoda, a phylum within Kingdom Animalia, is the most diverse of all the phyla. http://www.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/

Phylum Arthropoda Domain Eukarya Kingdom Animalia Phylum Arthropoda Image below curtesy of Northwest Pests Arthropoda, a phylum within Kingdom Animalia, is the most diverse of all the phyla. Fossil records indicate that arthropods evolved from annelids sometime in the Cambrian period, but molecular evidence indicates that they evolved separately from each other. All arthropods are bilaterally symmetrical, and their bodies are covered with a tough exoskeleton. This exoskeleton consists of layers of chitin (a type of polysaccharide) and proteins. This hard covering protects the animal, and provides points of attachment for muscle cells, but also present a unique problem for the animal during growth: because it (unlike the human epidermis) is not living, it cannot grow with the organism. Once the arthropod has grown too large for its exoskeleton, it is shed and a new skeleton is grown. This entire process is known as molting. Arthropods' bodies are segmented, but they are also divided into distinct sections, usually the head, thorax, and abdomen, although the head and thorax can be joined to form a cephalothorax. There are five main groups of arthropods: horseshoe crabs, arachnids, crustaceans, centipedes and millipedes, and insects. Horseshoe crabs are unique in that they have survived for hundreds of millions of years with almost no evolution. Arachnids consist of scorpions, spiders, and mites. Crustaceans are nearly all aquatic and consist of lobsters, crabs, shrimps, barnacles, etc. Centipedes and millipedes are both worm-like, segmented animals with a single pair of legs on each body segment.

6. Inst. F. Biologie II, RWTH Aachen, Vorlesung Bau Der Organismen WS 2002/03 Skript der Vorlesung Bau der Organismen , Teil arthropoda, WS 2002/2003, der RheinischWestf¤lischen Technischen Hochschule Aachen. http://www.bio2.rwth-aachen.de/teaching/ws02/BO02_13.htm

Institut für Biologie II Vorlesung: Bau der Organismen, WS 2002/2003 Bau der Organismen I (Tiere) Vorlesungsstunde 13 und 14 am 6. 12. 2002 Die Arthropoda arthros = Gelenk und pos sind der artenreichste Tierstamm Systematik: Der Stamm Arthropoda Chelicerata (spinnenartige Tiere) Crustacea (Krebstiere) Myriapoda Insecta (synonym: Hexapoda; Insekten, Kerbtiere) Euarthropoda bezeichnet, dies als Unterscheidung zu den Protarthropoda . Unter diesem Begriff fasst man die Onychophora Tardigrada trachys Gemeinsamkeiten des Bauplans aller Arthropoda: Bilateralsymmetrie, Cephalisation, Muskulatur, Darmrohr, deutliche Segmentierung triploblastische Embryonalentwicklung . Lediglich Coelome embryonal angelegt , zerfallen aber nach kurzer Zeit wieder. Wie bei den Annelida gibt es Abschnitte, die nicht segmenthomolog sind: Dem Prostomium der Annelida entspricht bei den Arthropoda das Acron (von gr. akros = spitz), dem Pygidium entspricht das Telson (von gr. telson Tagmata wie z. B. Kopf, Brust und Hinterleib bei Insekten (von gr. tagma Das Exoskelett aus Chitin gibt nicht nur Schutzschicht gegen Verdunstung Die Muskulatur Das Blut der Arthropoden wird als bezeichnet (von gr.

7. The Arthropoda - Animals With Jointed Exoskeletons An overview of the arthropods, with coverage of recent and extinct groups. Still under construction. Palæos arthropoda. INVERTEBRATES. Arthropods Home Schizoramia. Pancrustacea. References . http://www.palaeos.com/Invertebrates/Arthropods

Palæos: Arthropoda INVERTEBRATES Arthropods Home Home Palaeont- ology Evolution ... Megayear Digest Page Back Unit Home Animal Kingdom Metazoa Mikko's Phylogeny Home Page Next ... Vertebrates Index The Arthropoda animals with jointed exoskeletons Arthropods Home (you are here) Mandibulata Atelocerata Uniramia Schizoramia ... Hexapoda Lobopoda Soft-bodied worm like creartures with stumpy legs, the were a succesful and diverse group during the Cambrian. Modern representatives include the velvet worms (peripatus) and the microscopic "water bears" Anomalocarida the superpreditors of the Cambrian seas, these creatures represent the evolutionary link between lobopods and true arthropods Trilobites are the most well-known of all invertebrate fossils. These solely Paleozoic forms dominated the earliest ecosystems, but declined thereafter Chelicerates Sharing a common ancestor with the trilobites, the Chelicerates include not only the familar terrestrial spiders, scorpions and mites, but also are a number of ancient Paleozoic lineages, of which only the horseshoe crabs remain as living fossils Myriapoda the "many legged", include centipedes, millipedes, and a number of other forms, such as the giant Carboniferous

8. Scriptus Naturae. Arthropoda Y Biologia Informaci³n general y art­culos introductorios a la ciencia entomol³gica, as­ como acerca de conservaci³n, biodiversidad y maltrato animal. Incluye cursos en l­nea de Entomolog­a e invertebrados. http://scriptusnaturae.8m.com/

Free Web site hosting - Freeservers.com Web Hosting - GlobalServers.com Choose an ISP NetZero High Speed Internet ... Dial up $14.95 or NetZero Internet Service $9.95

9. Systematik Der Organismen: Arthropoda (Gliederfüßer) Stammbaum der arthropoda bis zur Ebene der Gattungen mit Kurzbeschreibungen einiger ArthropodenGruppen (Systematik, Biologie, Ontogenese, –kologie). http://www.systematik-entomologie.de/seiten/00arthropoda.htm

Prokaryota Plantae Animalia Chordata ... Insecta Allgemeines: Systematik: Animalia Systematische Einteilung der Arthropoden (19. Stamm des Unterreiches Metazoa; nach 1993 und Dettner 01. Unterstamm: Trilobitomorpha 01. Klasse: Trilobita (ausgestorben) 02. Unterstamm: Chelicerata 01. Klasse: Merostomata [5 Arten] 02. Klasse: Arachnida (Spinnentiere) [ca. 80.000 Arten] 01. Ordnung: Scorpionida (Skorpione) 02. Ordnung: Pseudoscorpionida (Pseudoskorpione) 03. Ordnung: Palpigradida 04. Ordnung: Araneida (Spinnen) 05. Ordnung: Opilionida (Weberknechte) 06. Ordnung: Acarina (Milben) 03. Klasse: Pantopoda (Asselspinnen) [ca. 1.000 Arten] 03. Unterstamm: Crustacea (Krebse) 01. Klasse: Remipedia [9 Arten] 02. Klasse: Cephalocarida [ca. 20 Arten] 01. Ordnung: Notostraca 02. Ordnung: Conchostraca 04. Klasse: Anostraca [ca. 180 Arten] 05. Klasse: Ostracoda (Muschelkrebse) [ca. 12.000 Arten] 08. Klasse: Mystacocarida [9 Arten] 09. Klasse: Tantulocarida [ca. 21 Arten] 10. Klasse: Ascothoracica [ca. 45 Arten] 01. Ordnung: Thoracica 02. Ordnung: Acrothoracica 03. Ordnung: Rhizocephala

10. Arthropoda - Die Welt Der Kleinen Krabbeltiere œbersicht der Ordnungen Acari, Araneae und Opiliones mit Beschreibungen und Fotos zu einigen Arten. http://www.arthropods.de/klassarthropoda.htm

Leitseite Geschichten Systematik Über uns ... e-mail Die Welt der kleinen Krabbeltiere Liste der Klassen Unten finden Sie eine Auflistung der Klassen und ihrer Ordnungen, die zum Stamm der Gliederfüßler gehören. Nur solche Ordnungen sind aufgelistet, zu denen Sie Informationen in dieser Web-Site finden. Von dieser Liste können Sie sich über eine weitere Liste bis zu den Arten durchklicken. Die Listen werden laufend erweitert. Klasse Ordnung Arachnida (Spinnentiere) Acari (Milben) Araneae (Webspinnen) Opiliones (Weberknechte) Klasse Ordnung Insecta (Insekten) Auchenorrhyncha (Zikaden) Blattodea (Schaben) Coleoptera (Käfer) Diptera (Zweiflügler) ... Trichoptera (Köcherfliegen) Klasse Ordnung Vom Kriechen zum Krabbeln Wie wir mit den Regenwürmern verwandt sind Liste der Klassen Text: Maria Pfeifer

11. Underwater Field Guide To Ross Island & McMurdo Sound, Antarctica Image gallery and information about the various types of sea spider. http://scilib.ucsd.edu/sio/nsf/fguide/arthropoda-2.html

Field Guide ARTHROPODA : Chelicerata ARTHROPODA : Chelicerata sea spiders Click on each organism to view more information Achelia sp. Ammothea clausi Ammothea sp. probably A. carolinensis Colossendeis australis Colossendeis drakei Colossendeis megalonyx sensu lato Colossendeis wilsoni Colossendeis sp. Nymphon australe possibly Pallenopsis sp. or Ammothea clausi Pentanymphon antarcticum LETTER EXPLAINING LIMITS ON USAGE

12. Introduction To The Arthropoda Introduction to the arthropoda http://rdre1.inktomi.com/click?u=http://www.ucmp.berkeley.edu/arthropoda/arthrop

13. Arthropoda arthropoda. See the papers listed in the References section. This tree does not include most of the diverse extinct lineages of the early Paleozoic. Containing group Bilateria. Table of Contents. References. Information on the Internet Introduction to the arthropoda. UCMP Berkeley. Insect and Spider Collections of the World http://phylogeny.arizona.edu/tree?group=Arthropoda&contgroup=Bilateria

14. Arthropoda The position of presumed Crustacea from the upper Cambrian in the phylogeneticsystem of the Mandibulata arthropoda. top. Introduction to the arthropoda. http://tolweb.org/tree?group=Arthropoda&contgroup=Bilateria

15. Collembola Christiansen, K. and E. Pike. 2002. Cretaceous Collembola (arthropoda, Hexapoda)from the Upper Cretaceous of Canada. Cretaceous Research 23165188. http://tolweb.org/tree?group=Collembola&contgroup=Hexapoda

16. NOAA Paleoclimatology Program - Insecta A database of British Coleoptera (arthropoda Insecta), including information on habitat, distribution, and fossil occurrence, along with their bibliographic references. Database available for download in Microsoft Access format. http://www.ngdc.noaa.gov/paleo/insect.html

Insecta All data in the World Data Center for Paleoclimatology archive are contributed by research scientists. Contributors and references are available in readme or data file headers. Here is a Sample Data Citation The WDC currently has three contributed data sets containing proxy data from insects. BUGS bugs2000v5.exe ) and stand-alone ( bugs2000runtime.exe ) formats. Older versions on CDROM can be obtained at the BUGS Homepage . Both versions require MS Excel (or Excel Viewer) for viewing the raw abundance data, but ecology and distribution data can be seen without it. Installation and brief user instructions can be found in the BUGS Users Guide. Chironomid data from lake cores from British Columbia have been contributed by Ian Walker (Okanagan University College, Kelowna, British Columbia, Canada). These data are in zipped Tilia 2.0 files with accompanying forms. The sites available thus far are: Hippa Lake Marion Lake Mike Lake Misty Lake ... Basswood Road Lake/Splan Pond ; and Tugulnuit Lake A database of North American Beetles (2 Mbytes), consisting of presence/absence values for 269 taxa, has been contributed by Scott Elias (University of Colorado). Contributing Data Obtaining Data at the WDC Download Insect Data BUGS New! 2003 Version 5

17. ADW: Arthropoda: Classification Home Kingdom Animalia Phylum arthropoda. Phylum arthropoda (insects, crustaceans,spiders, and relatives). Information; Pictures; Specimens; Sounds; Classification. http://animaldiversity.ummz.umich.edu/site/accounts/classification/Arthropoda.ht

Overview News Conditions of Use Contact Us ... Home Kingdom Animalia Phylum Arthropoda Phylum Arthropoda (insects, crustaceans, spiders, and relatives) Information Pictures Specimens Sounds ... Classification What do these icons mean? The icons tell you what features are available for that taxon. Information Pictures Specimens Sounds Selecting an icon will take you directly to that feature. Parent taxa Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Protostomia (protostomes) Ecdysozoa Phylum Arthropoda (insects, crustaceans, spiders, and relatives) Uniramia Subphylum Hexapoda Subphylum Myriapoda Subphylum Crustacea (crustaceans) Subphylum Chelicerata Home About Us Special Topics ... Comment Sponsored in part by the Interagency Education Research Initiative, the Homeland Foundation and the

18. Introduction To The Trilobita UCMP Berkeley introduction to the trilobite fossil record, ecology, systematics and morphology. http://www.ucmp.berkeley.edu/arthropoda/trilobita/trilobita.html

Introduction to the Trilobita Gone, but not forgotten. . . Click on this image to view an enlarged version! Among famous groups of extinct organisms, trilobites probably rank second only to the dinosaurs in fame. Their fossils are instantly recognizable and often strikingly beautiful. In fact, prehistoric people liked them as much as we do. At Arcy-sur-Cure in France, a 15,000-year- old human settlement, one of the artifacts found by archeologists was a trilobite that had been drilled to be worn as an amulet. Although the last few trilobites went extinct about 245 million years ago, they are one of the best-known and most-studied groups of fossil arthropods Find out more about trilobites by searching for them in our Invertebrate Type Catalog (as you'll find, we have a few!).... Or click on the buttons below to learn more about trilobites. Kevin's TRILOBITE home page , maintained by Kevin Brett at the University of Alberta, is loaded with trilobite pictures and links to everything trilobitological.

19. Arthropoda Introduction - Introduction Unit arthropoda introduction, 1 Introduction. arthropoda. The arthropodsare by far the most successful phylum of animals, both in http://www-biol.paisley.ac.uk/courses/Tatner/biomedia/units/arth1.htm

Unit: Arthropoda introduction 1 Introduction ARTHROPODA The arthropods are by far the most successful phylum of animals, both in diversity of distribution and in numbers of species and individuals. They have adapted successfully to life in water, on land and in the air. About of all known animal species belong to the Arthropoda - about 800,000 species have been described, and recent estimates put the total number of species in the phylum at about 6 million. Arthropods are found in a greater variety of habitats than any other animal group; on top of mountains, at great depths in the ocean and in the icy wilderness of Antarctica. They can survive great extremes of temperature, toxicity, acidity and salinity. Now extinct, TRILOBITES represent the oldest known examples of arthropods. An extremely diverse phylum with many classes both large and small, there are several classifications of the phylum. You will find only an abbreviated version on the Taxonomy Table page which will be expanded in other relevant units (e.g. Crustacea This unit is therefore intended as an overview of the common features of arthropods which have allowed them to become so successful.

20. Arthropoda Phylogeny, bibliography, and links from the Tree of Life Project. http://www.tolweb.org/tree?group=Arthropoda&contgroup=Bilateria

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

Page 1     1-20 of 123    1  | 2  | 3  | 4  | 5  | 6  | 7  | Next 20