A study by Dr. Martin Ebert and Dr. Martina Kölbl-Ebert examined the remains of some 4,200 Tharsis fossil specimens. They found that some of these fish, all of which were subadults, would occasionally attempt to or accidentally swallow belemnites (squid-like cephalopods), leading to the Tharsis choking to death.
Jurassic fish choked to death on squid-like cephalopods, fossil study reveals
