Turrilites

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Turrilites Lk. (állat), az ammoniták ama fajai, melyek geologiailag legkésőbb jutottak kifejlődésükre. A velük rokon Helicoceras és Heterocerasokkal együtt igen fontos a felső kréta-szisztémában (l. o.) mint vezérkövület.

 

 

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