Late Triassic naticid drillholes: Carnivorous gastropods gain a major adaptation but fail to radiate

  • Fürsich F
  • Jablonski D
  • 38


    Mendeley users who have this article in their library.
  • 47


    Citations of this article.


Abstract. Infaunal and reclining bivalves of the Late Triassic Cassian Formation of northern Italy contain drillholes that closely resemble those produced by modern naticid gastropods. The oldest drillholes previously reported are from the late Early Cretaceous; this suggests that the drilling adaptation was lost soon after its appearance in the Late Triassic and originated independently in another naticid clade 120 million years later. The perceived selective value of such an adaptation may thus not always be a good predictor of its long-term survival, which is ultimately governed by factors that aJfect the speciation and extinction rates of the clade that carries it.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free