Passively filled

Take me to the ichnology start page!

Take me back to the beginning of the determination key!

Take me to the alphabetical list of ichnogenera!

Does the complex burrow with the zig-zag shape and the passive filling have a wall-lining or mantle? Please, choose accordingly:

  1. With lining/mantle
  2. Without lining/mantle

Take me to the ichnology start page!

Take me back to the beginning of the determination key!

Take me to the alphabetical list of ichnogenera!

[Passively filled]