“They’re exactly the same size, exactly the same age, exactly the same location, the exact same proportions and they’re kept a little bit different,” said Dr. Kluge.
Dr Clements, who was not involved in the research, said the new paper relies heavily on visual analysis methods, and these questions can be solved through chemical analysis. “With various technologies, we will definitely have more clues or more answers,” he said, noting that these techniques can be expensive.
When Dr. Wahl first examined the fossils, looking for phragmocones, a characteristic rock shell of most cephalopod fossils that helps them control buoyancy. a nautilus Phragmocone is a circular shell. a squid It’s a squid bone. Dr. Wallen says the Phragmokon fossil chamber is divided into mineral slabs, which are very distinctive and generally well preserved.
Dr. Wallen said the G. beargulchensis fossil, preserved at the American Museum of Natural History, preserves this distinctive leaf. The authors argue that since this fossil and S. bideni are preserved in the same location and environment, they should have preserved lines. But S. Pedeni had no trace of this strain, which would suggest that the creature never had an inner shell.
Dr. Wallen also hopes to see evidence of a primitive tritus, a metal counterweight to ensure early cephalopods were able to swim horizontally. But the S. Bedney fossil does not have a pulpit, suggesting that it “did not exist,” said Dr. Bedney. Wallen.
In contrast, the researchers’ analysis found that the inner shell of S. Pideni was that of a gladius, a triangular shell-like remains found in squid and vampire squid. “This is really not something anyone would expect to see in an animal of this age,” said Dr. Wallen. “We knew we were looking for an early vampire.”
Kluge refutes this conclusion, stating that the cortex is a deformed phragmocon and body space G.
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