Now that you have established that the trace fossil you want to determine is a surface structure or imprint, please choose from the list below which overall morphology fits best to the imprint you would like to determine.

Overall morphology

• Linear and/or curved striations
• Biserial striations
• Biserial protuberances
• Hook-shaped, sinuous
• Elongated, linear, tortious
• Lunate
• Bilobate
• Irregular
• Circular to subcircular
• Ellipsoidal, ovoid
• Cone-shaped, multisegmented
• Tripartite, variably segmented
• T-shaped
• Dumb-bell-shaped
• Star-shaped
• Radiating