Life Before Life - The Ediacaran Explosion ~ with WILLIAM MCMAHON

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  • เผยแพร่เมื่อ 16 ธ.ค. 2024

ความคิดเห็น • 67

  • @scottcarpenter9993
    @scottcarpenter9993 2 ปีที่แล้ว +8

    Superb interview, questions (Mark) and answers (William). William, excellent context for each of your answers. Thanks, guys.

    • @artdent9871
      @artdent9871 ปีที่แล้ว +1

      Hey, my take: WORM WARS! Current thinking among scholars is trending towards understanding that there was an Ediacaran Explosion prior to the Cambrian Explosion, but we know the oceanic chemistry necessary to develop calcium-carbonate body parts didn't exist until near the end of the Ediacaran. The more conservative among paleontologists seem to think that there was very little diversity prior to the late Ediacaran, because without shells, teeth, etc, almost no evidence of diversity is left in the geologic record, ergo it didn't exist.
      NONSENSE, there is evidence of worm tracks in the sea floor of shallow, coastal waters going back almost to the last Slushball/Snowball Earth, and by the end of the Ediacaran, a worm was building layer after layer of thick, cup-like armor in layers rising up out of the coastal biotic mat, one of which had a large, perfectly circular hole drilled into it from another worm trying to eat it (Google THAT picture). Things were HOT under the mat, obviously. All PRE-CAMBRIAN.
      Obviously there was intense predatory behaviour going on among worms in the mat long before calcium carbonate allowed a geologic record of it. Eventually genetics might allow us to piece it all together, but until then, CMON, WORM WARS were a thing throughout the Ediacaran, resulting in Molluscs (fat worms with shells), Crustaceans (shelled worms with funky limbs), vertebrates (fast worms with inner skeletons), etc etc etc.
      Their earliest ancestors had to have been subject to predation, and when animal life got too competitive IN the mat, that's when animals started getting the hell out of there to live, and leave fossils.The lower levels of the mat clearly liked dissolving the remains of anything that died IN the mat.
      Almost all modern animals are basically worms with a bunch of stuff added on, it's kind of obvious that there had to be incredible diversity and predation among worms throughout the Ediacaran, not just at the very end, for the incredible diversity of late Ediacaran and Cambrian Explosion to be reasonably explained.
      Scientists used to, and often still do, apply words like "incredible" and "amazing" to describe what happened to animal diversity in the Cambrian, but it makes a lot more sense that there was "amazing" diversity among the Ediacaran worms who evolved into these Cambrian animals, they just couldn't leave a record of their existence until calcium-carbonate body parts became possible due to oceanic chemistry changes in the late Ediacaran. By then, they were pretty diverse and complex, to the point where they were eating the mat and earlier above-mat animals out of existence.
      Imho😉

  • @georgefspicka5483
    @georgefspicka5483 11 หลายเดือนก่อน +2

    I love this presentation. Though I have no degree, I'm a "curator" of paleontology at the Natural History Society of Maryland. That's mainly because of all the classes I took in Honors Geology in the 80s, especially focusing on the Historical aspect, then several years at the Smithsonian's Museum of Natural History, and all the reading I've done. Besides the actual science, I love learning about why we think the way we do. In fact programs like "Connections" and "The Day the Universe Changed," fascinate me to no end. As did the book, "A History of Knowledge." Thank you :)

  • @malousmom9231
    @malousmom9231 7 หลายเดือนก่อน +1

    This is excellent! What a great speaker/storyteller! He spoke eloquently, fluidly, cogently. Really great learning experience and very pleasurable to watch!! Mark is great host!!

  • @santoshkpandey2076
    @santoshkpandey2076 2 ปีที่แล้ว +2

    Nice to hear you William ! It's SK Pandey from India. Great interview, the questions with feasible answer and indeed it's way forward our new generation to understand and follow on.
    Thanks !

  • @elizabethmusgrove6203
    @elizabethmusgrove6203 2 ปีที่แล้ว +4

    Very interesting to hear recent developments so clearly explained. Highly informative. Thank you.

  • @paulawilliamson7552
    @paulawilliamson7552 2 ปีที่แล้ว +3

    A fascinating interview with great questions and answers, thank you.

  • @Amberscape
    @Amberscape 2 ปีที่แล้ว +2

    briliant interview, loved it every second of it:)!

  • @longcastle4863
    @longcastle4863 2 ปีที่แล้ว +3

    love this channels content. Thank you

  • @apepchoko
    @apepchoko ปีที่แล้ว

    quiet interesting video, thks for sharing

  • @artdent9871
    @artdent9871 ปีที่แล้ว +2

    Hey, my take: WORM WARS! Current thinking among scholars is trending towards understanding that there was an Ediacaran Explosion prior to the Cambrian Explosion, but we know the oceanic chemistry necessary to develop calcium-carbonate body parts didn't exist until near the end of the Ediacaran. The more conservative among paleontologists seem to think that there was very little diversity prior to the late Ediacaran, because without shells, teeth, etc, almost no evidence of diversity is left in the geologic record, ergo it didn't exist.
    NONSENSE, there is evidence of worm tracks in the sea floor of shallow, coastal waters going back almost to the last Slushball/Snowball Earth, and by the end of the Ediacaran, a worm was building layer after layer of thick, cup-like armor in layers rising up out of the coastal biotic mat, one of which had a large, perfectly circular hole drilled into it from another worm trying to eat it (Google THAT picture). Things were HOT under the mat, obviously. All PRE-CAMBRIAN.
    Obviously there was intense predatory behaviour going on among worms in the mat long before calcium carbonate allowed a geologic record of it. Eventually genetics might allow us to piece it all together, but until then, CMON, WORM WARS were a thing throughout the Ediacaran, resulting in Molluscs (fat worms with shells), Crustaceans (shelled worms with funky limbs), vertebrates (fast worms with inner skeletons), etc etc etc.
    Their earliest ancestors had to have been subject to predation, and when animal life got too competitive IN the mat, that's when animals started getting the hell out of there to live, and leave fossils.The lower levels of the mat clearly liked dissolving the remains of anything that died IN the mat.
    Almost all modern animals are basically worms with a bunch of stuff added on, it's kind of obvious that there had to be incredible diversity and predation among worms throughout the Ediacaran, not just at the very end, for the incredible diversity of late Ediacaran and Cambrian Explosion to be reasonably explained.
    Scientists used to, and often still do, apply words like "incredible" and "amazing" to describe what happened to animal diversity in the Cambrian, but it makes a lot more sense that there was "amazing" diversity among the Ediacaran worms who evolved into these Cambrian animals, they just couldn't leave a record of their existence until calcium-carbonate body parts became possible due to oceanic chemistry changes in the late Ediacaran. By then, they were pretty diverse and complex, to the point where they were eating the mat and earlier above-mat animals out of existence.
    Imho😉

  • @pauliether.c.guy.3349
    @pauliether.c.guy.3349 ปีที่แล้ว

    Dude I laughed when you said " Tina took it on the chin" but this was bar none the best cambrian and pre-cambrian video ever.

  • @charleswood2182
    @charleswood2182 11 หลายเดือนก่อน

    I hope this resonates better in life sciences than in a physics of measurement:
    Here’s how we may conclude that since inception, life predicates upon the substantive and therefore independent existence of self in organism. Self consists in an inner observer, a personal identity (Hume’s use in Of Personal Identity) as a simple sameness felt to be ‘me’ having sensation, equivalent to perception. That I feel to be always me is a datum. I then generalize that inner state, an inner observer amidst perceived variation, to all life, forming a model helpful to an empirical science in the query: What is life?
    Borrowing from Schrodinger, life exhibits use of free energy in service to order or homeostasis, as opposed to energy in the cosmos which trends increasingly random. How? Here’s how, an erudition grounded in Newtonian Einsteinian relativity, classical mechanics. (My view is consistent with Paul Davies’ The Demon in the Machine.)
    Borrowing from conceptual physics, I am at a state of perpetual rest, where “I” is quale for the possessor of an unchanging personal identity who knows, thinks and acts. Always at rest since “I” never moves of changes, I may then cause my arm to move. When I do so, my personal identity does not change one iota. By executing an intention, I may cause change in the dynamics of sensuous reality, the world of the senses. Then with respect to personal identity, all motion is privileged in its relation to absolute rest. I think everyone has missed the significance to physiology of their own inner continuity as an identity, a personal identity. (Missed by everyone partly because in physics, the Newtonian idea of absolute rest was deprecated, done so in my view prematurely.)
    How describe sensuous reality, objectively present beyond the vail of sensation? Frank Wilczek at the Royal Institution describes the cosmos as the instantiated symmetry or sameness of general physical law, where we know from Noether’s theorem that the quantity of energy in the cosmos must conserve.
    Note phenomenally that personal identity’s sameness is also symmetry. Personal identity must conserve since it describes the same regardless of time and place, is then a global continuous symmetry. As such, Noether’s theorem would apply. So from the fact of instantiated symmetry of general physical law, principally relativity, we can deduce that the inner observer too must conserve as a quantity.
    From those considerations, I then form a general case from a special case. The special case: “I” by its locomotion does not change; and locomotion is at root homeostatic to a then successful organism in whole. General case: “I”, the quale of my personal identity, never changes despite my motility or physiology; and motility is at root homeostatic to then successful organisms.
    We then have in life’s perceptual system a constant inner observer/cognitor/actor amid variation. A living reference frame for intelligible sensation within which personal identity, a constant presence isolated from the effects of its influence on sensuous reality, is then ontologically distinct from sensuous reality. Denis Noble’s work in physiology suggests to him that physiology is directed, where Noble offers the caveat that he uses the term directed as anthropomorphism. I say it isn’t because of Coppola and Purves 1996.
    That study allows us a top down view of personal identity as inferred to be referenced contemporaneously in human vision in order to fine tune vision to optimum. Nothing in dynamics can be, without presumption, regularity sufficient to optimize a set of motions, here the motion of the retina optimized for visual acuity.
    Then empirically, I assert that all the behaviour of organisms cannot be explained by atoms in motion since motions cannot optimize themselves where increasing randomness is not optimal to life.
    I hope you have an interest.

  • @glennquagmire1747
    @glennquagmire1747 ปีที่แล้ว

    This is very fascinating story of early life on earth 👍

  • @wcdeich4
    @wcdeich4 2 ปีที่แล้ว

    Great information :) BTW, I think the image at 24:16 is mislabeled.

    • @EvolutionSoup
      @EvolutionSoup  2 ปีที่แล้ว +2

      Good catch - yes should be Ikaria wariootia :-)

  • @wcdeich4
    @wcdeich4 2 ปีที่แล้ว +5

    Well, there is the Gunflint Biota before the Ediacaran

    • @folday6169
      @folday6169 ปีที่แล้ว

      True, but it is generally assumed by evolutionary biologists that simple forms preceded more complex forms of life. In this case, the transition from simple to more complex forms of life is writ large in the geological record!

    • @folday6169
      @folday6169 ปีที่แล้ว +2

      The Gunflint Chert is a good example of a biota which preceded the Ediacaran.

    • @folday6169
      @folday6169 ปีที่แล้ว +1

      Thanks to both of you! A fine presentation.

    • @ClimateScepticSceptic-ub2rg
      @ClimateScepticSceptic-ub2rg ปีที่แล้ว +1

      All single celled, I think. The Ediacaran were metazoan, multi celled, and some at least were mobile. That is why they are significant. They fill the gap between single celled eucaryotes and the Cambrian 'explosion'. The Ediacaran Nama assemlages have apparent molluscs, annelids and arthropod stem animals.

  • @LuciFeric137
    @LuciFeric137 2 ปีที่แล้ว +1

    Fascinating

  • @curtissmith4024
    @curtissmith4024 2 ปีที่แล้ว

    Hey! Shout out to a fellow scientist. I like the part where a young person discovers the Charnia fossil. Likewise, my 37 years of work on my unified field theory has yielded a good example, because a young person can understand it. This brings me to evolution. Those long carbon chains, and the need to cycle Oxygen efficiently. Awareness/consciousness in proportion to whole body control. To gain more attention or regard than a stone, I must exchange interferons (emotions) with similar creatures. I must be of benefit to my environment to gain, or I am fighting myself. I actually lean toward the physical shape of a creature being 'fun', as the most beneficial survival trait!

  • @Kennephone
    @Kennephone 5 หลายเดือนก่อน

    Life like this existing in the ediacrian makes you wonder when the first macroscopic organisms really started. My thinking is that if they existed then, then there had to be ancestors before, even in the moddle of snowball earth.

  • @kevinhaynes9091
    @kevinhaynes9091 ปีที่แล้ว +1

    The origins of life. It doesn't get more interesting. If life is universal, as science is universal, ie. physics, chemistry, and biology are the same everywhere, then is it possible that the Ediacaran biota is the first draft of complex life, after life first seeds, and then establishes a foothold on any given planetary body, environment permitting. The Ediacaran therefore started its journey in molecular clouds, whereas the Cambrian is the first generation/biota of native life, specialising in planet Earth.
    Just ideas...

  • @yfrontsguy
    @yfrontsguy 2 ปีที่แล้ว +1

    I have heard a theory as to the oxygenation of Earth's atmosphere allowing collagen to form and thus multicellular life. I wonder what he thinks of this theory?

    • @tlafleur8433
      @tlafleur8433 ปีที่แล้ว

      God creted all organisms after their kind, already completely formed.

  • @DavidGS66
    @DavidGS66 ปีที่แล้ว

    11:45 Error: in 1930s, there couldn't have been German soldiers in Namibia because all German colonies in Africa were lost in WW1, Namibia being given to South Africa to administer.

  • @idio-syncrasy
    @idio-syncrasy 2 ปีที่แล้ว +1

    This was, ya know really informative, ya know.

  • @garfil8807
    @garfil8807 2 ปีที่แล้ว +3

    William is a cutie

  • @MKRex
    @MKRex ปีที่แล้ว

    We need a little bit more diversity.

  • @1joshjosh1
    @1joshjosh1 2 ปีที่แล้ว

    I wish I was smart enough to persuade my dreams but I'm not so I'm not even sure why I'm watching this what's the point. It's well done but there's no point for me to watch

    • @EvolutionSoup
      @EvolutionSoup  ปีที่แล้ว +3

      The fact that you were drawn to this subject shows you have an enquiring mind -- that's something to be proud of!

    • @tlafleur8433
      @tlafleur8433 ปีที่แล้ว

      Keep watching, you're more capable than you think. No one here remembers everything they hear and watch.

    • @harpo345
      @harpo345 ปีที่แล้ว

      With that attitude you might as well give up on life because there's no point to anything and you'll be dead in a few decades anyway.
      The condition is known as nihilism.

  • @NeidlichesSchwert
    @NeidlichesSchwert 6 หลายเดือนก่อน

    Horrible beginning. Nobody clicks on this video to learn about Billy.

    • @thefourthalien
      @thefourthalien 5 หลายเดือนก่อน

      Correction: Nobody wants to read about your low attention level.

  • @John-y2o4f
    @John-y2o4f ปีที่แล้ว

    "Evolution"? It's AMAZING what some people will believe without ANY EVIDENCE!

    • @harpo345
      @harpo345 ปีที่แล้ว +4

      There's a mountain of evidence for evolution, but seeing it does involve opening your eyes and your mind.

    • @John-y2o4f
      @John-y2o4f ปีที่แล้ว

      @@harpo345 Name me ONE item that that you know for a FACT that proves evolution.

    • @harpo345
      @harpo345 ปีที่แล้ว +1

      @@John-y2o4f
      The fossil record.
      Try walking down the Grand Canyon. Unless you're telling me that a mile plus of rock was laid down in forty days and forty nights during Noah's flood, then you can see a massive length of time during which the fossils developed from simpler forms at the bottom to ever more complex forms as you go up. Trees of development for all forms of life can be mapped by looking at how one form developed from another over the eons.
      It's beautiful and awe-inspiring - the work of God operating on a massive canvas. Why do you try to limit Him to a few thousand years?

    • @bikesgoodgasbad
      @bikesgoodgasbad ปีที่แล้ว

      @@John-y2o4fhardy weinberg equilibrium and radioactive decay

    • @douglasboylan3477
      @douglasboylan3477 หลายเดือนก่อน

      ​@@John-y2o4fbro what are you talking about?
      Evolution is a change in alleles over time. I dare you to prove that false 😂

  • @tlafleur8433
    @tlafleur8433 ปีที่แล้ว

    500 million years lol😂😂🤪🥳🐒=🧔LOL

  • @AlbertoTaure
    @AlbertoTaure 2 ปีที่แล้ว

    "The Ediacaran fauna has no relationship whatsoever with any currently living creatures"
    A. Seilacher, paleontologist of Tübingen University and Yale en New Haven (Connecticut).

    • @jamestodd2323
      @jamestodd2323 2 ปีที่แล้ว +13

      Love how you creationists monitor any video about evolution so you can be first with your negative comments.
      Quoting ONE paleontologist who questioned the ediacaran biota does not overturn today's concensus that those creatures gave rise to the Cambrian biota.

    • @markshort9098
      @markshort9098 2 ปีที่แล้ว

      Show evidence for your claims or it's nothing but B.S.. while your providing actual evidence for that 🤣 you can provide evidence to support your cults beliefs in a magic man

    • @MendTheWorld
      @MendTheWorld 2 ปีที่แล้ว +8

      Are you actually a Creationist? Your quote made no sense otherwise.
      Science makes sense. The pieces of evidence fit together coherently. Creationism makes sense only as an ancient myth.

    • @whiskeytango9769
      @whiskeytango9769 2 ปีที่แล้ว +1

      That is false, all the good paleontologist is admitting is that no clear relationship has been found. That's the best that can be stated.

    • @ProfezorSnayp
      @ProfezorSnayp 2 ปีที่แล้ว +7

      Sure, that's what Seilacher wrote but I'm pretty sure at least some Ediacaran fauna had relation to extinct Cambrian taxa - Spriggina for example could have been an ancestor to arthropods.
      On the other hand, what fossil evidence do we have for the garden of Eden?

  • @michaelgf8840
    @michaelgf8840 2 ปีที่แล้ว +1

    First this: God created the Heavens and Earth-all you see, all you don’t see. Earth was a soup of nothingness, a bottomless emptiness, an inky blackness. God’s Spirit brooded like a bird above the watery abyss. God spoke: “Light!” And light appeared. God saw that light was good and separated light from dark. God named the light Day, he named the dark Night. It was evening, it was morning- Day One. God spoke: “Sky! In the middle of the waters; separate water from water!” God made sky. He separated the water under sky from the water above sky. And there it was: he named sky the Heavens; It was evening, it was morning- Day Two. God spoke: “Separate! Water-beneath-Heaven, gather into one place; Land, appear!” And there it was. God named the land Earth. He named the pooled water Ocean. God saw that it was good. God spoke: “Earth, green up! Grow all varieties of seed-bearing plants, Every sort of fruit-bearing tree.” And there it was. Earth produced green seed-bearing plants, all varieties, And fruit-bearing trees of all sorts. God saw that it was good. It was evening, it was morning- Day Three. God spoke: “Lights! Come out! Shine in Heaven’s sky! Separate Day from Night. Mark seasons and days and years, Lights in Heaven’s sky to give light to Earth.” And there it was. God made two big lights, the larger to take charge of Day, The smaller to be in charge of Night; and he made the stars. God placed them in the heavenly sky to light up Earth And oversee Day and Night, to separate light and dark. God saw that it was good. It was evening, it was morning- Day Four. God spoke: “Swarm, Ocean, with fish and all sea life! Birds, fly through the sky over Earth!” God created the huge whales, all the swarm of life in the waters, And every kind and species of flying birds. God saw that it was good. God blessed them: “Prosper! Reproduce! Fill Ocean! Birds, reproduce on Earth!” It was evening, it was morning- Day Five. God spoke: “Earth, generate life! Every sort and kind: cattle and reptiles and wild animals-all kinds.” And there it was: wild animals of every kind, Cattle of all kinds, every sort of reptile and bug. God saw that it was good. God spoke: “Let us make human beings in our image, make them reflecting our nature So they can be responsible for the fish in the sea, the birds in the air, the cattle, And, yes, Earth itself, and every animal that moves on the face of Earth.” God created human beings; he created them godlike, Reflecting God’s nature. He created them male and female. God blessed them: “Prosper! Reproduce! Fill Earth! Take charge! Be responsible for fish in the sea and birds in the air, for every living thing that moves on the face of Earth.” Then God said, “I’ve given you every sort of seed-bearing plant on Earth And every kind of fruit-bearing tree, given them to you for food. To all animals and all birds, everything that moves and breathes, I give whatever grows out of the ground for food.” And there it was. God looked over everything he had made; it was so good, so very good! It was evening, it was morning- Day Six.
    Genesis 1:1‭-‬31 MSG
    bible.com/bible/97/gen.1.1-31.MSG

    • @ryanrevland4333
      @ryanrevland4333 ปีที่แล้ว +3

      😂😂😂

    • @harpo345
      @harpo345 ปีที่แล้ว +2

      Isn't it blasphemy to adapt and misquote the bible?
      Serious question.