Machichnus Mikulás, Kadlecová, Fejfar et Dvořák, 2006

Revised  diagnosis:Single  or  grouped  parallel  or  subparallel  furrows  per-pendicular  to  the  edge  of  hard  substrates.  They  typ-ically  lack  bioglyphs  and  filling  and  have  uniform  dimensions  and  shape.  The  furrow  surface  is  smooth  or  longitudinally  striated

Predation; substrate osteic; tracemaker vertebrate

Diagnosis: Shallow serial parallel or subparallel grooves in hard substrates. The groove surface is smooth or longitudinally striated.Each series consists usually of dozens of grooves which are typically uniform in shape and dimensions. The grooves are oriented perpendicular to substrate edge.