List of Transitional Fossils - Nautiloids To Ammonoids

Nautiloids To Ammonoids

The Nautiloids → Ammonoids Evolutionary Series
Appearance Taxa Relationships Status Description Image
>500 Ma

Subclass:

  • Nautiloidea
390 Ma

Order:

  • Bactritida
  • Member of the Nautiloids.
  • Direct ancestor of the ammonoids.
370 Ma

Subclass:

  • Ammonoidea
  • Direct descendants of Bactirida.

Read more about this topic:  List Of Transitional Fossils