From: Roberto Takata <rmtakata@gmail.com> Reply-To: rmtakata@gmail.com To: keesey@gmail.com CC: Dinosaur Mailing List <>
Crocodylia+Testudines clade (some genetic study place Testudines as an archosaur taxon - syster to Crocodylia).
When they say extant, what if the group goes extinct?
a wild guess here, but I would guess that they then call the group extinct.