Sentences with phrase «paleobiologist bill»

The foliage was so dense «a human would have had to chop through it with a machete,» says paleobiologist Bill DiMichele.

Dragonfly - like insects with foot - long wingspans buzzed in the humid air, and chunky primitive spiders called trigonotarbids, bearing thick black - tipped fangs, sat atop trees, says Smithsonian Institution paleobiologist Bill DiMichele.