a coach gets 11 challenges in the nfl.
how many challenges does a coach get in the nfl?
11
na
na
quasipetalichthys





















































quasipetalichthys haikouensis is a species of extinct petalichthid placoderm from the middle devonian of china.





















































section::::fossils.





















































it is known primarily from two poorly preserved skulls from the givetian-aged haikou formation of haikou, kunming, where they were found in association with remains of the antiarch placoderms "bothriolepis sinensis", and "hunanolepis". the larger skull may be around in length.





















































section::::phylogeny.
quasipetalichthys