Merostomata: Revizyonlar arasındaki fark
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{{Taksokutu
| renk = pink
| ad =
| resim = Horseshoe_crab_pair.jpg
| alem = [[Animalia]]
| şube = [[Arthropoda]]
| altşube = [[Chelicerata]]
| sınıf =
| altbaşlık = [[Takım]]lar
| açıklama =
Satır 12 ⟶ 13:
}}
'''Merostomata''' is a class of marine [[Chelicerata]] which includes [[horseshoe crab]]s and [[eurypterid]]s. It includes only four living [[species]] but dozens of fossil species mainly from the [[Paleozoic]]. The [[class (biology)|class]] Merostomata is slowly being abandoned in favour of splitting it into two classes, [[Xiphosura]] and [[Eurypterida]]. This is because Merostomata is thought to be [[paraphyletic]], with the Eurypterida more closely related to the [[Arachnida]], forming the group [[Cryptopneustida]] (Boudreaux, 1979). Inertia, however, has prevented this change from being incorporated in textbooks, which continue to use the traditional "Merostomata".
The Merostomata are the only [[Chelicerata|chelicerates]] to possess [[compound eye]]s; the [[Arachnida|arachnids]] have lost the ancestral arthropods' fully developed latero-anterior compound eyes.
==Kaynaklar==
* Boudreaux H. B., 1979. Arthropod phylogeny with special reference to insects. John Willey & sons, New York, Chichester, Brisbane, Toronto, 320 s.
== Dış bağlantılar ==
Satır 18 ⟶ 26:
*http://www.earthlife.net/chelicerata/merostomata.html
▲[[Kategori:eklem bacaklılar]]
[[cs:Hrotnatci]]
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