cephalaspidomorphs

Example:Paleontologists often refer to cephalaspidomorphs and early jawed vertebrates as transitional forms between jawless fish and modern jawed vertebrates.

Definition:Synonymous with cephalaspidomorphs, these terms describe the earliest known jawed vertebrates in the history of vertebrates.

Example:Protognathostomes, such as cephalaspidomorphs, represent a significant phase in the evolutionary history of jawed vertebrates.

Definition:This term is sometimes used to describe cephalaspidomorphs and other early jawed vertebrates as evolutionary precursors to modern gnathostomes.