6 Lonely Branches on the Tree of Life

7 811 Shikime 799 mijë

You can find the poster featured in this episode in the SciShow store on DFTBA: store.dftba.com/collections/scishow/products/scishow-tree-of-life-poster
When there’s only one species on an evolutionary branch, we call it a monospecific taxon. Studying these special species can help us better understand not just those sparse groups, but all life on this planet.
Hosted by: Olivia Gordon
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Homo sapiens
Welwitschia mirabilis
Amborella trichopoda
Sphenodon punctatus
Orycteropus afer
Limnognathia maerski
Ginkgo biloba


  1. Bored Serf
    Bored Serf
    13 orë më parë

    She keeps on saying cooperative strategies helped humans thrive but it isn’t unique to humans or even primates.

  2. CrankyPants
    Ditë më parë

    I miss Olivia. She always covered the most interesting topics.

  3. Mickey Rube
    Mickey Rube
    Ditë më parë

    THE GYMNOSPERMS. my new punk band

  4. Snore Cardgage
    Snore Cardgage
    4 ditë më parë

    Her voice is so annoying. Gimme anyone elssssassseeehhhhhhh

  5. rh1507
    7 ditë më parë

    Really are they lonely. I think that they are or were simply hermits.

  6. David Silverman
    David Silverman
    7 ditë më parë

    I'm a subscriber and I like your videos a lot but please look up the correct pronunciation of "species."

    1. Star
      5 ditë më parë


    9 ditë më parë

    Mitochondria is the powerhouse of the cell.

  8. Vollständigen Namen
    Vollständigen Namen
    9 ditë më parë

    hi, this is Amy Farrah Fowler and i present: fun with lonley branches on the tree of life

  9. Real Talk
    Real Talk
    10 ditë më parë

    All life on earth is related. Yet ppl want to debate if animals are conscious when we do genocides on them. Loggers are going to be reborn as a forest animals

  10. Dick Richard
    Dick Richard
    11 ditë më parë

    HEY I came here for content, don’t give me a preachy green peace spiel

    1. Star
      5 ditë më parë

      oh, u might not like science very much then :/ maybe u'll find something that suits u

  11. Marcus Vinicius Magalhães de Almeida
    Marcus Vinicius Magalhães de Almeida
    13 ditë më parë

    Maned Wolf is also a single genus animal

  12. Akash Leo
    Akash Leo
    14 ditë më parë

    She looks like Amy from the Big Bang Theory T.V. Show

  13. rhythm heaven monkey
    rhythm heaven monkey
    17 ditë më parë

    I was disappointed there were almost no sea creatures. Ribbon eels have a genus all to themselves (Rhinomuraena). The black ribbon eels and the blue/yellow ones were thought to be separate species, but the black ones are just younger ribbon eels. Orcas are the only recognized extant species in the genus Orcinus.

  14. KingOfGames
    18 ditë më parë

    No Ginko? Dissapointed

  15. shoelesblondlady
    18 ditë më parë

    I was hoping Sheldon would pop up and give us a fun with flags segment

  16. Cesar Cueto
    Cesar Cueto
    19 ditë më parë

    I love this host. She reminds me of amy from TBBT. I hate that show but her character I liked. Anyway

  17. Koreyite
    19 ditë më parë

    Welwitschia a good day.

  18. Albert Martí
    Albert Martí
    20 ditë më parë

    Great video, but I feel like humans can be easily replaced from the list

  19. J. Xochimitl
    J. Xochimitl
    20 ditë më parë

    Thought she had a cold... nope...

  20. Thorné Palmer
    Thorné Palmer
    22 ditë më parë

    I thought y'all were talking about Yggdrasil and I was about to say "Yo that ain't how that works" xD

  21. Big Cazza
    Big Cazza
    25 ditë më parë

    lmao the neanderthal child just looks like an australian aboriginal

  22. Dave Holls
    Dave Holls
    27 ditë më parë

    I'm disliking this video because you didn't show the rotifer teeth.

  23. Noeraldin Kabam
    Noeraldin Kabam
    27 ditë më parë

    ‘Getting your taxon’

  24. Plus7Charisma
    27 ditë më parë

    Guess I'm just a monospecific person.

  25. Stuart Williams
    Stuart Williams
    27 ditë më parë

    Here it is begin with once upon a time

  26. Stuart Williams
    Stuart Williams
    27 ditë më parë

    What common ancestor please show me???????

    1. Solomon Smith-jones
      Solomon Smith-jones
      12 ditë më parë

      what animals do you want a common ancestor for?

    2. Christopher Parks
      Christopher Parks
      26 ditë më parë

      havent figured that part out yet

  27. Kerry Fitch
    Kerry Fitch
    28 ditë më parë

    Categorizing life is a crapshoot because life is a spectrum. Consider that “humans “ have Neanderthal and/or Denisovan genes. Also, see the scishow video about sex as a spectrum.

  28. Kerry Fitch
    Kerry Fitch
    28 ditë më parë

    We don’t qualify because we have Neanderthal genes and some of us also have denisovan genes. It’s also questionable that Neanderthal and Denisovans are not Homo Sapiens in the first place.

  29. Trin Wheeler
    Trin Wheeler
    28 ditë më parë

    Neanderthals actually had larger brains than homo sapiens. They died out because of their large and bulky bodies in the ice age.

  30. Big Red
    Big Red
    29 ditë më parë

    "Fancy Biologist speak" ? Don't you mean exacting? What is the point of dumbing down something so important? Who told you to dumb it down and are they even science trained? I bet you they aren't.

  31. The last Squidbilly
    The last Squidbilly
    Muaj më parë

    Are you and Sheldon still dating

  32. ឃួន សុវណ្ណអធិភូ
    ឃួន សុវណ្ណអធិភូ
    Muaj më parë

    It’s haven’t die all out yet because in south East Asian most people have so different from homo Saipan if you study more on it.

  33. Konstantin Staab
    Konstantin Staab
    Muaj më parë

    What a poetic title lol

  34. Bright Cloud
    Bright Cloud
    Muaj më parë

    10:20 yea makes sense Considering humans can technically give up on men *laughs aggresively in people can become purely lesbians nd only have trans men*

  35. Avi Bhagan
    Avi Bhagan
    Muaj më parë

    oh, oh, oh, I can add one... Leather back turtles ...

  36. Katie Price
    Katie Price
    Muaj më parë

    Dumb person coming through, how do they know all of the spooky tardigrades they found were female?

    1. Adsper2000
      Muaj më parë

      They probably looked at their chromosomes.

  37. Hélène Honsbein
    Hélène Honsbein
    Muaj më parë

    I come from Namibia. The Welwitschia is a national symbol of ours, it appears in our coat of arms and our national rugby team is even called the Welwitschias.

  38. Angelo Perez Cortes
    Angelo Perez Cortes
    Muaj më parë

    Make it longer up -kevin-

  39. fr-novice
    Muaj më parë

    First, lonely drivers Now it’s lonely species

  40. Bryce Rush
    Bryce Rush
    Muaj më parë

    Don’t a lot of lizards have the parietal eye though? I know bearded dragons do

    1. Freedom Anderson
      Freedom Anderson
      23 ditë më parë

      Monitors do as well.

  41. Jorge A. Garza V
    Jorge A. Garza V
    Muaj më parë


  42. SomeoneCommenting
    Muaj më parë

    I bet that we are our only line simply because we killed every other humanoid that we found in our way, like we still do with ourselves.

  43. mdb123
    Muaj më parë

    I need genetic proof of this. We need to completely 3-D sequence all (as many as reasonably possible) living plants, animals, microbes genes, proteins, and dna and rna. We need to shift through (use AI systems here) all the 3-D gene/protein data. We need to come up with the classification of all life base on this data. If the (AI assisted) analysis then supports a tree of life -- then I will accept it. Plugging organisms (old and current) to an artificial pre-ordained tree of life seems premature to me. Let's do a bottoms up from genes and 3-D structural analysis of dna, rna, and proteins to see if a tree-of-life structure even emerges. The genes and it's 3-D structure has the history (HISTORY) of each living thing. For example today cyanobacteria dna goes continuously back 3.6 to 4.1 billion years. Let's start with cyanobacteria.

  44. Athata
    Muaj më parë


  45. Nasser Nasser
    Nasser Nasser
    Muaj më parë

    Man, that mustach, couldn't resist, sorry.

  46. omdop nonya
    omdop nonya
    Muaj më parë

    i miss her:{ wish she was still on!

  47. Handsome Rob
    Handsome Rob
    Muaj më parë

    Tried finding the SSC Tuatara and ended up here 🤷🏻‍♂️

  48. Femme Sammy
    Femme Sammy
    Muaj më parë

    Welwitschia mirabilis is that friend from college who invested in bitcoin when everyone else thought it was a stupid idea

  49. Ritvik Singh Sabharwal
    Ritvik Singh Sabharwal
    Muaj më parë

    Where is this diagram from

  50. allyourcode
    Muaj më parë

    Whenever you think humans will live on because we always have, just remember that all other species in our genus went extinct. The last generation of neanderthal was probably thinking the same thing. There is absolutely no cosmic guard rail preventing us from shooting ourselves in the face (sorry for the mixed metaphor). The only way to avoid that outcome is to be deliberate about it. natalism = ecocide.

  51. brandon holt
    brandon holt
    Muaj më parë

    im god. Im the loneliest.

  52. eastportland
    Muaj më parë

    No platypus discussion?!

    1. Freedom Anderson
      Freedom Anderson
      23 ditë më parë

      Platypus are related to Echidnas.

  53. Zackery Smith
    Zackery Smith
    Muaj më parë

    Check out the creation museum chick or the Bible you hit it all wrong about were we came from I hope you get it figured out sometime in your life

    1. Solomon Smith-jones
      Solomon Smith-jones
      12 ditë më parë

      @AOUGE There's also a ton of proof of evolution when looking at embryos, this is because embryos "evolve slower" than the fully developed forms of the animal, for example: human embryos still have tails, whale embryos still have leg buds, human embryos still have muscles which fully developed humans lost about 250 million years ago, fruit bat embryos still have some parts used for echo location despite fruit bats loosing the ability to echolocate ages ago, etc. (fruit bats can't echo locate because they're diurnal).

    2. Blake
      22 ditë më parë


    3. AOUGE
      Muaj më parë

      If god made us why would we have a appendix and wisdom teeth?

    4. Dawson Posekany
      Dawson Posekany
      Muaj më parë

      Check out a Center for Scientific Research or a book that documents things that actually happened, you hit it all wrong about where we came from and I hope you get it figured out sometime in your life. (I tried to mimic your original post as best as I could but there were a lot of grammar errors).

  54. DrThunder88
    Muaj më parë

    Wait a minute. How can aardvarks be ungulates if they're more closely related to elephants than pigs?

  55. Gary Seven
    Gary Seven
    Muaj më parë

    What about the Duck Billed Platypus? Nice that you recognised the Homo Sapiens could be a evolutionary dead end. Lets hope for some evolution here and maybe we'll be on their menu as Neanderthals were on ours, hopefully we taste like Chicken. 🐔😂👍

  56. dead goon
    dead goon
    Muaj më parë

    Are there any "tips" for which there is no "branch"? Shout out to Gate's Pass!

  57. CornerTalker
    Muaj më parë

    Here's what I would like to see on en episode of SciShow: Why do taxonomic groups even exist? Why can we define mammals existing today with so many specific features - why instead doesn't the range of species blur from one group to another? Why are exceptions like monotremes so rare?

  58. Eric
    Muaj më parë

    She is such a great host.

  59. Paul Schaefer
    Paul Schaefer
    Muaj më parë

    Thay actuallly missed one. there is one order that contains only one tree species and it is extinct in the wild. the species Ginko biloba.

  60. Dominic McBride
    Dominic McBride
    Muaj më parë

    Does the platypus fall into this group (of not having a group) also?

  61. Hello Hello
    Hello Hello
    Muaj më parë

    We killed them all

  62. Matthew Snerbble
    Matthew Snerbble
    Muaj më parë

    So where do squids fit in this?

  63. WalayatFamily
    Muaj më parë

    You look like an evolutionary dead end.

  64. Albert Sanchez
    Albert Sanchez
    Muaj më parë

    The tasteless dredger hepatosplenomegaly pull because decision gradually scrape during a wandering time. lewd, earthy flesh

  65. Zotan Inoron
    Zotan Inoron
    Muaj më parë

    Homosapians might not be rare, but I'd argue we're pretty endangered from a self=imposed destruction. :\

  66. gantulga ganhuyag
    gantulga ganhuyag
    Muaj më parë

    Our prominence came about at the cost of millions of species including our own linage

  67. John ManyJohns
    John ManyJohns
    Muaj më parë

    Great content. I'd prefer more pics of the subjects and less talking head but that's just me. Thx.

  68. Kanishq Quotes
    Kanishq Quotes
    Muaj më parë

    Common hoopoo bird is also the only one in their species

  69. Alex Klein
    Alex Klein
    Muaj më parë

    I personally got offended that fungi was not included.

  70. Pindar Corinna
    Pindar Corinna
    Muaj më parë

    SciShow, Presenters are your medium, they are you. Your content is worth watching so need to choose your presenters sensibly; this is a presenter who always makes you difficult to watch. She projects insecurity and (involuntarily, I'm sure) is sneering and discourteous to the viewer. Nobody would mind a bland or nondescript presenter, but nobody wants to watch an ethically or visually offensive one. I feel this presenter was chosen not for appropriate merit but to tick a box or fulfill some ideological quota. I just could not watch her again- I won't be clicking again. (I have been a loyal viewer but you are just not meeting us halfway.)

  71. Miguelito Jones
    Miguelito Jones
    Muaj më parë


  72. John Zacharias
    John Zacharias
    Muaj më parë


  73. Tori G
    Tori G
    2 muaj më parë

    Neanderthals didn't marry into humans, they kidnapped and loved them...

  74. Fillet Simp SupremeTM
    Fillet Simp SupremeTM
    2 muaj më parë

    fun fact: we say no homo so much that only homo sapiens remain

  75. Blobbert Mcblob
    Blobbert Mcblob
    2 muaj më parë

    Well, if you subscribe to the theory that Homo Floresiensis is still out there, we're not alone.

  76. Abahrelghazali
    2 muaj më parë

    Aardvarks aren't ungulates. They're Afrotheres, more closely related to elephants, hyraxes, and manatees than to ungulates. Even Wikipedia has this right. The 2001 source is very out of date (predating the genetic resolution of modern mammals' relationships), and the 2016 source, while it mentions 'ungulates', correctly identifies aardvarks as Afrotheres. The 'ungulates' mentioned in both papers are condylarths - a polyphyletic wastebasket taxon (that is correctly identified as such in the later paper) - but in this video 'the ungulates' are presented as a valid taxonomic group and relatives of aardvarks, erroneously implying that aardvarks are more closely related to living ungulates, perissodactyls and artiodactyls. Please do better scishow!

  77. Phantom Fugu
    Phantom Fugu
    2 muaj më parë

    "Tuatara skolls" 😳

  78. Matthew kornman
    Matthew kornman
    2 muaj më parë

    There are only two species of Tuatara.

  79. daydodog
    2 muaj më parë

    You forgot about Dr Lawrence Turtleman

  80. League Master gg
    League Master gg
    2 muaj më parë

    7:23 because they have only reached the first stage of enlightenment

  81. Rainbow the Dragon Cat
    Rainbow the Dragon Cat
    2 muaj më parë

    10:51 So basically the cell stage carnivores in spore?

  82. jimmy Ryan
    jimmy Ryan
    2 muaj më parë

    Photos please

  83. tha koi
    tha koi
    2 muaj më parë


  84. nacoran
    2 muaj më parë

    Wavy Waxy Grooves is the name of my pre-vinyl acid rock band.

  85. michael
    2 muaj më parë

    still waiting for science to prove miller-urey, that way they stop acting like evolution is a bono fide scientific theory. Every car has round tires. That don't mean my 2004 vw gave birth to ur 2021 ferrari.

    1. michael
      11 ditë më parë

      @Solomon Smith-jones so evolution is an assumption? not a scientific theory? if u cannot reproduce the conditions of "first life", then anything after is an assumption, not a scientific theory? provide observable proof of evolution. oh, that is right. u can't. But yet a scientific theory DEMANDS observable proof. waiting.

    2. Christopher Parks
      Christopher Parks
      11 ditë më parë

      @michael evolution is not the study of how life originated, and nothing about the theory of evolution seeks to answer the question of how life started. How life started and how life changes are 2 entirely separate phenomenon. We don't know how life started. We _do_ know how life changed over time. Miller-Urey experiment is related to the question of how life started. Evolution is not the study of how life started.

    3. michael
      11 ditë më parë

      @Solomon Smith-jones - u bore me. evolution isn't related to proof of how life started, that science cannot prove? miller urey? the basis of the foundation of the THEORY of evolution? SCIENTIFIC THEORIES REQUIRE OBSERVABLE PROOF. please prove. stop wasting my time.

    4. Solomon Smith-jones
      Solomon Smith-jones
      12 ditë më parë

      Miller-urey isn't related to evolution, it's about abiogenesis which is different thing. Sure we aren't sure how the first cell came to be, but we are sure that once the first cell appeared evolution took place.

    5. Christopher Parks
      Christopher Parks
      26 ditë më parë

      the scientists seem to think think it's a scienctific theory

  86. ms teresa
    ms teresa
    2 muaj më parë

    Humans in 2100: *I walk this empty street / on the boulevard of broken dreams*

  87. Mad Monkee
    Mad Monkee
    2 muaj më parë

    "didn't used to be" - behold, a combination of words that is not possible in Engish

  88. Chris Groves
    Chris Groves
    2 muaj më parë

    You have a booger on your nose

  89. You only Die when you get killed
    You only Die when you get killed
    2 muaj më parë

    so are black white asian people like how dogs are huskys ,golden retrievers, pitbulls etc?

    1. You only Die when you get killed
      You only Die when you get killed
      2 muaj më parë

      @ApexThank you very much for taking time to help me.

    2. Apex
      2 muaj më parë

      @You only Die when you get killed This is unfortunately common these days. If you want to just have a base-level understanding, then the videos on channels like Scishow and CrashCourse are sufficient, as they basically match a decent high-school-level explanation. They briefly go through all facts about the history of racial thought in history and science, and sometimes delve into some neat little details about biological quirks. Unfortunately, this is not a subject I'm very read-up on, so I don't have a single reputable source or book to really sum-up such a complicated subject. However... rationalwiki.org/wiki/Racialism Now, so note: Rationalwiki is not an unbiased source. It's a site that specifically approaches things from the perspective of countering pseudoscientific/reactionary/fringe narratives for pleasure. However, that page on racialism is one of the better ones on that site, at least for the purposes of starting an understanding on what "Race" is. It presents various racialist arguements in a compact form, contrasted against scientific evidence and history. It is, at least, an introduction to the conversation and terms like phenotypes, clines, haplogroups and the various biological arguements that come up when talking about race at a philosophical level, which I think is a more useful approach than the equivalent Wikipedia-page on "Scientific Racism".

    3. You only Die when you get killed
      You only Die when you get killed
      2 muaj më parë

      @Apex Thank you i tried that but honestly I do not know where to look or what to type in to find out . Whenever I search it up I get results similar to "are N***** the closest to apes" or something of the like. I'm pretty sure it is because of my phrasing (I am not proficient with English) but most of the info I get is more akin to racism rather than informative.

    4. Apex
      2 muaj më parë

      @You only Die when you get killed I gave a very simplified answer. Honestly best you do your own research from reputable sources instead of learning this from youtube comments.

    5. You only Die when you get killed
      You only Die when you get killed
      2 muaj më parë

      @Apex thank you very much for the information.

  90. TerribleTonyShow
    2 muaj më parë

    The orycteropus afer looks like if a pig saw their own uncanny valley

  91. ms teresa
    ms teresa
    2 muaj më parë

    2:22 emphasis on *probably* 🤦

  92. Matt A
    Matt A
    2 muaj më parë

    I was expecting a Crazy Cat Lady branch.

  93. Richard East
    Richard East
    2 muaj më parë

    Is that one human with wheels a different species?

  94. Nathaniel Anderson
    Nathaniel Anderson
    2 muaj më parë

    I am more of a Heterosapien.

  95. Nathaniel Anderson
    Nathaniel Anderson
    2 muaj më parë

    I am a lonely branch on the tree of life.

  96. Dear Dakanda.
    Dear Dakanda.
    2 muaj më parë

    OK the number one is unexpected

  97. case styer
    case styer
    2 muaj më parë

    You look more like my sister in law than anybody else in her family. You have a twin! Lol.

  98. umvhu
    2 muaj më parë

    What a load of nonsense. The "tree of life" only exists in the minds of evolutionists, it cannot be found in nature.

    1. Dawson Posekany
      Dawson Posekany
      Muaj më parë

      The amount of evolution deniers of this world are shrinking, and soon there will be no more scientifically illiterate idiots left

    2. jaymz1999
      2 muaj më parë

      Did you really think it was a tree that grows in nature? It’s a description, an illustration of how life are related.

  99. SK 114
    SK 114
    2 muaj më parë

    We have blue tounge lizards in Australia, and they look different to turatara, have the 3rd eye to sense daylight

  100. ismail Cem Eroglu
    ismail Cem Eroglu
    2 muaj më parë

    Or they kill all their kin aka humans