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Why Sharks Are Covered In Teeth

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Manage episode 497661814 series 46737
Content provided by Minute Earth. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Minute Earth or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

To learn more about this topic, start your googling with these keywords:

  • Dermal denticles: also called placoid scales, they’re the most primitive form of fish scales that are structurally similar to teeth and are today found only in sharks, rays, and chimaeras.
  • Outside-in theory: The strongest theory for the evolution of teeth, which are thought to have evolved from dermal denticle scales.
  • Ostracoderms: Extinct armored jawless fish that lived in the Paleozoic Era
  • Thelodonts: Extinct jawless fish that had individual scales as opposed to plates of armor
  • Placoderms: Now extinct, they were some of the first jawed fish and lived from the Silurian through the Devonian era.

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567 episodes

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Why Sharks Are Covered In Teeth

MinuteEarth

494 subscribers

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Manage episode 497661814 series 46737
Content provided by Minute Earth. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Minute Earth or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

To learn more about this topic, start your googling with these keywords:

  • Dermal denticles: also called placoid scales, they’re the most primitive form of fish scales that are structurally similar to teeth and are today found only in sharks, rays, and chimaeras.
  • Outside-in theory: The strongest theory for the evolution of teeth, which are thought to have evolved from dermal denticle scales.
  • Ostracoderms: Extinct armored jawless fish that lived in the Paleozoic Era
  • Thelodonts: Extinct jawless fish that had individual scales as opposed to plates of armor
  • Placoderms: Now extinct, they were some of the first jawed fish and lived from the Silurian through the Devonian era.

MinuteEarth is produced by Neptune Studios LLC

⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://neptunestudios.info⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

If you like what we do, you can help us!

- Become our patron: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://patreon.com/MinuteEarth⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

- Buy our merch: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠http://dftba.com/minuteearth⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

- Buy our book: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://minuteearth.com/books⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

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- Share with your friends and family

- Leave us a comment (we read them!)

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  continue reading

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