1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Prehistoric Tarantulas

Discussion in 'Tarantula Questions & Discussions' started by johnharper, Jul 2, 2008.

  1. johnharper

    johnharper Arachnobaron

    How big was the prehistoric tarantulas that roamed the Earth before the modern day ones?

  2. reverendsterlin

    reverendsterlin Arachnoprince Old Timer

    I would guess no large than modern T's, maybe slightly larger from the lower oxygen levels but like most modern animals size isn't usually advantageous and the exoskeleton will only support so much size/weight.
    • Like Like x 1
  3. Travis K

    Travis K TravIsGinger Active Member

    wouldn't lower O levels bring on smaller species?:cool:
  4. Travis K

    Travis K TravIsGinger Active Member

  5. matthias

    matthias Arachnobaron

    "Arachnophobes can rejoice in the knowledge that there have been no foot-long super spiders in Earth's history."

    Really there aren't? could have fooled me. Oh well I'm going to go back to feeding my 12in T. blondi and let them know that 12 inches no longer equals a foot.
    • Like Like x 1
  6. Travis K

    Travis K TravIsGinger Active Member

    12" eh? Let see some pics.:liar:
  7. Kid Dragon

    Kid Dragon Arachnoprince Old Timer

  8. traxfish

    traxfish Arachnosquire

    Those were Eurypterids, which were large marine relatives of the arachnids. They were in the subphylum Chelicerata like the arachnids so they were sorta a sister class.

    Now, I know it is still not a tarantula, but there was Brontoscorpio anglicus, which was a meter long aquatic true scorpion.

    There was talks about a 2' giant spider called Megarachne, which Walking with Monsters talked about, but halfway though the show they identified the fossil as another Eurypterid. Not wanted to scrap what they had done so far Walking with Monsters just renamed it Mesothelae, which in actuality is a privative suborder of spiders still hanging on in eastern Asia. These spiders are so privative they have segmented abdomens and do not have venom.

    I believe that the largest spider ever known remains T. blondi :clap:
    Last edited: Jul 3, 2008
  9. Yung Cae$ar

    Yung Cae$ar Arachnopeon

    I think there was a documentary from walking with dinosaurs showing a prehistoric mygalomorph hunting this lizard. They said they were around a foot in length. If im not mistaken its hosted on youtube.
  10. The known prehistoric theraphosid as well as mygalomorph spiders both can be compaired with the smaller theraphosid species...
    Find the details. One of the paper describing this is available free on-line (at least i've found it).
    THat's gives you some clue...
  11. Kid Dragon

    Kid Dragon Arachnoprince Old Timer

    Actually its as prehistoric as tarantulas get without leaving the class Arachnida. These are prehistoric prehistoric tarantulas, before tarantulas were tarantulas. Its like tracing Madonna all the way back to Marilyn Monroe, pretty exciting stuff. ;)
  12. T_ROY

    T_ROY Arachnosquire

    I think there is a SEA SPIDER in australia thats gets about a foot.
  13. xBurntBytheSunx

    xBurntBytheSunx Arachnoprince Old Timer

    i thought i'd read somewhere there was a spider with a 17" carapace...