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avatar_Halichoeres

Bones are 400 million years old

Started by Halichoeres, September 05, 2018, 07:50:25 PM

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Halichoeres

September 05, 2018, 07:50:25 PM
Examination of the Devonian heterostracan Loricopteraspis reveals that they had true bone rather than just dentin or some convergently similar tissue serving as armor plating. This is a pretty big deal! Because these things were armored, protecting them from large arthropods and from other fishes, you and I can walk around supported by internal skeletons.



Paper (paywall): https://www.nature.com/articles/s41559-018-0624-1

And a reasonable write-up: https://newatlas.com/oldest-bone-aspidin-fish-fossil/55710/
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