Coptoclavidae

Coptoclavidae is an extinct family of aquatic beetles in the suborder Adephaga. The Coptoclavidae lived from the Triassic to the Early Cretaceous. Coptoclavidae is a clade of . The increase in the teleost fish population and the competition of Gyrinidae and Dytiscidae is believed to have caused their extinction.

Coptoclavidae

Coptoclavidae is an extinct family of aquatic beetles in the suborder Adephaga. The Coptoclavidae lived from the Triassic to the Early Cretaceous. Coptoclavidae is a clade of . The increase in the teleost fish population and the competition of Gyrinidae and Dytiscidae is believed to have caused their extinction.