Paradoxides

Paradoxides

Taxobox
name = "Paradoxides"


image_width = 240px
image_caption = "Paradoxides davidis"
regnum = Animalia
phylum = Arthropoda
classis = Trilobita
ordo = Redlichiida
subordo = Redlichiina
familia = Paradoxididae
genus = "Paradoxides"
subdivision_ranks = Species
subdivision = "P. aelandicus"
"P. bidentatus"
"P. bohemicus"
"P. davidis"
"P. forchhammeri"
"P. harlani"
"P. haywardi"
"P. gracilis"
"P. paradoxissimus"
"P. rugulosus"
"P. spinosus"

"Paradoxides" was a genus of relatively large trilobites found throughout the world during the Mid Cambrian period (540 million years ago).

It was a moderately large trilobite (14 cm.) with a semicircular head, free cheeks each ending with a long, narrow, recurved spine, and relatively large eyes. Its elongated trunk was composed of 20 segments and again was adorned with longish, recurved lateral spines. Its pygidium(caudal shield) was comparatively small and had one or two pairs of long spines on the posterior margin. "Paradoxides" is a characteristic Middle Cambrian trilobite of the 'Atlantic' (Avalonian) fauna. Avalonian rocks were originally deposited near a small continent in the Paleozoic age Iapetus Ocean. Avalonian beds are found in a narrow strip along the East Coast of North America as well as in Europe.

Developmental stages of this genus are also known.

References

Benes, Josef. Prehistoric Animals and Plants. Pg. 54. Prague: Artia, 1979

ee also

* List of trilobites


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Look at other dictionaries:

  • Paradoxides — Par a*dox i*des, n. [NL.] (Paleon.) A genus of large trilobites characteristic of the primordial formations. [1913 Webster] …   The Collaborative International Dictionary of English

  • Paradoxĭdes — Paradoxĭdes, Gattung aus der Familie der Trilobiten; findet sich vorzüglich im Übergangskalk; Arten: P. gibbosus, P. laciniatus u.a …   Pierer's Universal-Lexikon

  • Paradoxĭdes — Paradoxĭdes, s. Trilobiten …   Meyers Großes Konversations-Lexikon

  • Paradoxides — Paradoxĭdes, Gattg. der Trilobiten; wichtig als Leitfossil für das Untersilur ist der P. bohemĭcus Burm. [Abb. 1331] …   Kleines Konversations-Lexikon

  • Paradoxides — ▪ trilobite genus       genus of trilobites (an extinct group of arthropods) found as fossils in Middle Cambrian rocks of North America and western Europe (the Cambrian Period lasted from 540 to 505 million years ago). Paradoxides has a well… …   Universalium

  • Paradoxides davidis — Taxobox name = Paradoxides davidis status = Fossil image width = 240px regnum = Animalia phylum = Arthropoda classis = Trilobita ordo = Redlichiida familia = Paradoxididae genus = Paradoxides species = P. davidis binomial = Paradoxides davidis… …   Wikipedia

  • Paradoxides Series — ▪ geology       rocks deposited during the Middle Cambrian Period in western Europe and Scandinavia and in eastern North America (the Middle Cambrian Period lasted from 520 to 512 million years ago). The Paradoxides Series is characterized by the …   Universalium

  • Paradoxides — Trilobite daté du Cambrien, ayant une suture jugale opistopariée. Présence de pointes génales, glabelle sillonnée vers l avant, petit pygidium cylindrique, 16 à 20 segments (métamères) Catégorie : Trilobite …   Wikipédia en Français

  • paradoxides — par·a·dox·i·des …   English syllables

  • paradoxides — ˌ ̷ ̷ ̷ ̷ˈdäksəˌdēz noun Usage: capitalized Etymology: New Latin, from Latin paradoxum paradox + ides : a genus of trilobites of the Middle Cambrian having from 17 to 20 free segments, a large cephalic shield, and a very small pygidium and… …   Useful english dictionary

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