The Most Useful Fossils in the World

  • Published on:  3/26/2018
  • Try CuriosityStream today: like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: decades, one of the most abundant kinds of fossils on Earth, numbering in the millions of specimens, was a mystery to paleontologists. But geologists discovered that these mysterious fossils could basically be used to tell time in the deep past.Thanks as always to Nobumichi Tamura for allowing us to use his wonderful paleoart : in collaboration with PBS Digital Studios: to follow Eons elsewhere on the internet?Facebook - - - S, Uesugi K, Hiroyoshi S, Sashida K. 2017. Reconstruction of the multielement apparatus of the earliest Triassic conodont, Hindeodus parvus, using synchotron radiation X-ray micro-tomography. Journal of Paleontology. DEG, Clarkson ENK, Aldridge, RL. 1983. The conodont animal. Lethaia 16: 1-14.doi: 10.1111/j.1502-3931.1983.tb01993.xDzik J. 1991. Evolution of oral apparatuses in the conodont chordates. Acta Palaeontologica Polonica 36(3): 265-323. N, Orchard MJ, Urdy S, Bucher H, Tafforeau P. 2011. Synchotron-aided reconstruction of the conodont feeding apparatus and implications for the mouth of the first vertebrates. PNAS 108(21): 8720-8724. MA, Donoghue PC. 1997. Architecture and functional morphology of the skeletal apparatus of ozarkodinid conodonts. Philosophical Transations of the Royal Society B 352: 1545-1564.DOI: 10.1098/rstb.1997.0141Purnell MA, Donoghue PC. 1998. Skeletal architecture, homologies and taphonomy of ozarkodinid conodonts. Palaeontology 41(1): 57-102.


  • MightyRagnarok
    MightyRagnarok a years ago+218

    One of the paleontologists at my university is an expert on conodonts and I studied under him for a while and took a paleobiology/invertebrate paleontology class with him. He is crazy about conodonts. They are like his favorite animals ever. I think that they are pretty cool too. (I am a geology major with emphasis in paleontology.)

  • Wade Spencer
    Wade Spencer a years ago+163

    I couldn't be happier that they turned out to be bug-eyed wigglies.

  • Monica Freeman
    Monica Freeman a years ago+70

    You should do an episode on the evolution of bats!

  • DinoBot65
    DinoBot65 a years ago+182

    A video on the evolution of trees? Or maybe the Entelodonts?

  • Thessalin
    Thessalin a years ago+87

    Every episode I'm all like, "Yeah, but it's not an episode about snowball Earth." And then I'm all like, "Wow! Conodonts are the coolest! I didn't even know they existed!"
    I love y'all.

  • it's ok to smirk
    it's ok to smirk a years ago+441

    PBS studeos has multitudes of amazing channels...but this is my favorite. Thanks Eons team 💕

  • CintreuseGrande
    CintreuseGrande a years ago+59

    I love when Kallie hosts an episode, she has such a passion for everything she talks about. Keep up the awesome work <3

  • Isaac The Destroyer of Stuped

    How did insect winɡs evolve?

  • your mother will die in her sleep tonight

    I'm now interested in Conodonts.

  • Ryan Allen
    Ryan Allen a years ago+60

    I recently got a polished stromatolite fossil and it's one of my favorite things ever, how can you beat owning the fossilized remains of the 2.7 billion year old bacteria that contributed the high levels of oxygen in the atmosphere today for us to breath?

  • Rachel Losacco
    Rachel Losacco a years ago+17

    Every single episode astounds me. Seriously, I knew paleontology was cool, and you guys make it way way more interesting than a textbook! I especially love these episodes that unravel a mystery - it makes the answer that much more satisfying. Thanks for another fantastic story!

  • Steven Baumann
    Steven Baumann a years ago+150

    Thank you for doing this! Yep. They are so distinct that geologists will often use them to define upper and lower geologic boundaries. Like you said, they make great index fossils.

  • Master Therion
    Master Therion a years ago+133

    4:35 That's what I call nightmare fuel!!!

  • Edward Ramirez-Wright
    Edward Ramirez-Wright a years ago+19

    Woohoo, a group of animals I had no idea of, before!
    What do Ceticarids, Titanichthys, Leedsichthys, whale sharks, and baleen whales have in common? They're filter feeding giants, but all from totally different lineages. What's known about this niche; is there a correlation with the presences of gentle giants in the oceans and certain oceanic conditions? Or is it assumed that the filter feeding giant niche is always available throughout earth's biological history?

  • Nicholas Cook
    Nicholas Cook a years ago+8

    It would be interesting to talk about the various endosymbiotic events (I don't know if you've talked about any/all of them before), like the integration of mitochondria, chloroplasts, and the like. Interestingly a more recent one is aphids integrating Buchnera (a type of bacteria) into specialized compartments which obviates their need to excrete nitrogenous waste.

  • Livid Imp
    Livid Imp a years ago+13

    Ugh, that animation of the teeth gave me the creeps.

  • Nick C
    Nick C a years ago+35

    I love this show so much, more than any other. Every Sunday night and Monday morning I find myself thinking about fossils and ancient life forms, in anticipation for the next Eons episode. Thank you all for making each week better!

  • Carlos J. Ortiz
    Carlos J. Ortiz a years ago+24


  • yash sathe
    yash sathe a years ago+8

    cono-don't stop making amazing videos PBS Eons!

  • cantstandfake
    cantstandfake a years ago+6

    A video about subduction and the great uncomformity. Is it possible that another intelligent life, like humans, could have arisen or is there evidence to refute this or support this? Love your channel btw. Thanks guys.