Lichida

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m (Protected "Lichida" [move=sysop])
(Introduction)
 
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Among the most extraordinary of these forms is the gigantic Early Devonian species ''[[Terataspis]]''
Among the most extraordinary of these forms is the gigantic Early Devonian species ''[[Terataspis]]''
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The spiny character of these trilobites could possibly have come about as a defense against the rapidly evolving fishes of the Devonian period.
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It has been suggested that the spiny character of these trilobites came about as a defense against the rapidly evolving fishes of the Devonian period, though, this explanation can not account for the fact that the earliest lichids that arose during the Ordovician were already incredible spinose (some genera even lasted well into the Silurian and even Devonian, in fact), while fishes with jaws first arose some time during the early Silurian.
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Latest revision as of 21:46, 8 November 2008

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