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Telephinidae : ウィキペディア英語版 | Telephinidae
Telephinidae constitute a family of pelagic trilobites with large wide-angle eyes, occupying most of the free cheeks, downward directed facial spines and 9-10 thorax segments. The family is known during the entire Ordovician and occurred in deep water around the globe. == Distribution == The Telephinidae probably evolved from a species assigned to the Hystricuridae. Telephinids first occur during the late Tremadocian, with ''Carolinites'' and ''Opipeuterella'' being globally very common at low latitudes at the end of the Floian. ''Carolinites'' survived into the Darriwilian, at which time a second major radiation occurred, that includes ''Telephina'' and ''Telephops'', and these genera only went extinct at the end of the Ordovician.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Telephinidae」の詳細全文を読む
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