Were the Krukowski quarry Protichnites and Diplichnites
trackways made by a
Aglaspid? These enigmatic
arthropods are found in many Cambrian fossil sites. They were
once classified as Chelecerates like the horseshoe crabs, but
are now usually considered as incerta sedis. They meet the morphological
criteria of a Protichnites trackmaker, having multiple legs
and a telson.