Definitions

1. adjective

relating to or resembling the balaenopterid whales (e.g. blue whale, humpback whale) or their fossil record

“The balaenoidean whale fossils found in the area provided valuable insights into the evolution of these massive creatures.”

2. noun

a member of the suborder Balaenoptera or any of its extinct relatives

“The paleontologist studied the balaenoidean whale skeleton to determine its age and species.”