Below, you see a list with possible ichnogenera for a cylindrical, lined, passively filled, (sub)vertical, unbranched burrow. Click on them to get detailed descriptions of the ichnogenus and a list of its ichnospecies. (Please allow for pop-up windows):

• Caletichnus
• Chomatichnus
• Ichnospongeliella (Ichnogenus includes ornamented ichnospecies)
• Monticulichnus
• Scalichnus
• Siphonichnus
• Tasselia