Now that you have established that your trace fossil is a trail, most authors agree on the following hierarchy of importance when it comes to ichnotaxobases (Bertling 2007, Knaust 2012): 1. How many lateral elements build up the trail, 2. the overall morphology of the trail.

Number of lateral elements?
Please choose how many lateral elements the trail has:

• One (unary)
• Two (binary)
• Three (ternary)
• Four (quaternary)
• Many (multary)