Data from: The oldest turritelline gastropods: from the Oxfordian (Upper Jurassic) of Kutch, India

Shiladri S. Das, Sandip Saha, Subhendu Bardhan, Sumanta Mallick & Warren D. Allmon
Turritellid gastropods are important components of many Cretaceous-Recent fossil marine faunas worldwide. Their shell is morphologically simple, making homoplasy widespread and phylogenetic analysis difficult, but fossil and living species can be recognized based on shell characters. For many decades, it has been the consensus that the oldest definite representatives of Turritellidae are from the lower Cretaceous, and that pre-Cretaceous forms are homeomorphs. Some morphological characters of the present turritelline species resemble those of mathildoids, but...
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