The ink used by Cephalopods as an escape mechanism has been unchanged for millions of years. How do we know this? Because ink preserved for all that time has been analysed and found to be “essentially identical” to that of the modern Sepia officinalis (European common) cuttlefish.
Curiously, Thomas – in Fresh Fossil Squid Ink 160 Million Years Old? – has little to say on the “no evolution” aspect. Instead, he largely regurgitates what he has said in previous years about how the ink could not have survived all that time and thus must be only thousands of years old – typical soft tissue preservation stuff. Continue reading