Wikipedia
Protocoleoptera
The Protocoleoptera are an extinct suborder of beetles. It contains seven families in three superfamilies. It does not contain any infraorders. Below is a list of superfamilies and families:
Superfamily Tshekardocoleoidea
Tshekardocoleoidae Labradorocoleoidae OborocoleoidaeSuperfamily Permocupedoidea
Permocupedidae TaldycupedidaeSuperfamily Permosynoidea
Ademosyndidae Permosynidae