The Ediacaran-Cambrian trace fossil record in the Central Iberian Zone, Iberian Peninsula

The record of late Ediacaran and lower Cambrian trace fossils in the Central Iberian Zone, Iberian Peninsula, is reviewed. The evolution in trace fossil morphologies is comparable to that documented worldwide, with domination of simple trace fossils such as Gordia and Helminthoidichnites in late Ediacaran rocks and the appearance of more complex trace fossil morphologies in Cambrian rocks, including Treptichnus pedum, Rusophycus and Psammichnites. There are possible latest Ediacaran treptichnids (but not Treptichnus pedum), although the precise placement of the Ediacaran- Cambrian boundary in the Central Iberian Zone on the basis of trace fossils is complicated by a general upward-shallowing trend that may confound environmental and evolutionary signals