"What we see in these arthropod ancestors is the same kind of mouth as in penis worms -- right down to details of the rings of teeth and plates -- and we argue that this was present in the last common ancestor," co-author Greg Edgecombe from the Natural History Museum said.
During Pambdelurion and Omnidens' lifetime there was an escalation in species diversity driven by increases in oxygen that, in turn, led to the origin of predation. The latter drove the emergence of more active creatures and the ingestion by some of large quantities of food.
"It seems as if nowhere was safe back in the Cambrian," said co-author Fletcher Young, a former Bristol masters student. "No matter whether you lived in the water column or on the seafloor there was a big, ugly beast that would devour you."
Predators such as Pambdelurion and its kind were organisms that helped to fuel the Cambrian explosion of life that has impacted our planet ever since.
As for the sarlacc (usually referred to in lower case), the Star Wars Databank says the creature defies taxonomic classification.
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