If this were indeed so, the p and b in lip-service, laptop, lapdog, sob-story, adoptive, etc. ought also to be pronounced labiodentally.

Thrips probably evolved from primitive Psocopterans approximately 250 million years ago. […] The Liposcelidae include the common book lice (Liposcelis) psocopterans, which are wingless and also found in mammal nests.

His haggard eyes were deep-set, sunken into their sockets from exhaustion.

On the other side of the Atlantic, stores in Paris's chic Avenue Montaigne, a mecca for Japanese tourists, said that sales to foreigners had fallen sharply.