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Now, we're essentially certain that these are part of the beak, in part thanks to attachment scars on the fossils and they phylogenetic placement of ammonites https://t.co/rdTNZcSY9m https://t.co/EiN3EPC6Hf
Now, we're essentially certain that these are part of the beak, in part thanks to attachment scars on the fossils and they phylogenetic placement of ammonites https://t.co/rdTNZcSY9m https://t.co/EiN3EPC6Hf
部分的に読み始めたけど、良い!
あとこの本読みたい。 https://t.co/oUs3lhMSOA
@MarkusBhler10 @JoschuaKnuppe The buccal mass would enclose the aptychus and the upper jaw just like other cephalopod beaks. I must emphasize that there are buccal attachment scars, like those of coleoids, on aptychi. https://t.co/qqGSLaQhsL https://t.co/Y