accidentally posted the opening post while it wasn't finished .... damn .
anyway , these are the estimations for both prehistoric animals .
Rhizodus
6 - 7 meters
4 tons
two 22 cm front fangs
large , plate like scales , like Arapaima
so it was an armoured fish like Arapaima .
Arapaima's scale did not break vs Piranha's teeth :
Sarcosuchus
9-9.5 meters
3.5 - 4.3 tons
8 tons bite force according to this estimation
although in the same page , the estimations for Sarcosuchus are the old ones ( 12 meters , 8 tons )
i don't really understand bite force but let's just put it here lol .
Sarcosuchus is estimated to be between 3.5 ~ 4.5 metric tons. No idea for Rhizodus' weight, the wiki doesn't give an estimate but given the size discrepencies between these two animals, probably less than Sarcosuchus.
i also sometimes went to Carnivora , although of course i'm not as knowledgeable as them about Animals .
Jeremy Wade said Rhizodus is 4 tons here , 1:50 +
he also said the 18 foot Crocodile in the video has a bite force close to 4000 pounds ( 1.8 tons ) , and Rhizodus could have more than double that
he also said Rhizodus could outbite the Bone - Crusher ( Dunkleosteus ) , although i think it was based on 6.4 meters & 1 ton weight estimations for Dunkleosteus
btw , i matched these two up , because Rhizodus would get crushed against Deinosuchus Riograndesis or Purussaurus .
on the other hand , Sarcosuchus who
was a member of Crocodilians Holy Trinity with Deino and Puru , got downsized to 9 to 9.5 meters and 3.5 to 4.3 tons , and it's skull or jaw isn't as impressive as Deino's or Puru's , i think Rhizodus has a chance even though Sarco's chance to win might be bigger