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Tommotia and Friends BW by avancna Tommotia and Friends BW by avancna
Various organisms from the Tommotian epoch (early Cambrian) from Siberia, including Tommotia admiranda (top).
To the left of T. admiranda is the mollusk Latouchella costata. Beneath T. admiranda is its relative, Lapworthella tortosa. To L. tortosa's left is the primitive hyolith, Turcatheca crasseochlia. Beneath L. tortosa is the mollusk Yochelcionella cyrano, and to the right of Y. cyrano is Anabarella plana
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:iconmichelle56:
Michelle56 Featured By Owner Jun 28, 2008  Hobbyist Digital Artist
That's really cool!
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:iconanomaro-karisu:
Anomaro-Karisu Featured By Owner Jun 28, 2008  Hobbyist Digital Artist
I know that they've never found Tommotia's soft parts, so it's not known how it looked like. But on this interpretation, not even the shell looks like any one I've seen before. °°
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:iconavancna:
avancna Featured By Owner Jun 28, 2008  Hobbyist Traditional Artist
There is apparently a lot more to Tommotia than simply that one conical shell. The reconstruction is according to an articulated relative, apparently.
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:iconanomaro-karisu:
Anomaro-Karisu Featured By Owner Jun 28, 2008  Hobbyist Digital Artist
Just recognized it. The one I was thinking of was T. kozlowskae.
If T. admiranda is really a relative to T. kozlowskae, the genus
Tommotia could be closely related not only to the cephalopods, but also to the polyplacophora.

At least they're all molluscs, but it's interesting how this puts their family tree together.
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:iconavancna:
avancna Featured By Owner Jun 28, 2008  Hobbyist Traditional Artist
There are four recognized species of Tommotia, and since the genus' reevaluation, I really don't think that it's regarded as a cephalopod anymore. In fact, I'm unsure if it is even regarded as a mollusk now.
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:icongiant-blue-anteater:
Giant-Blue-Anteater Featured By Owner Jun 26, 2008  Hobbyist Digital Artist
So Tommotia didn't look like a crawling cephalopod?
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:iconavancna:
avancna Featured By Owner Jun 26, 2008  Hobbyist Traditional Artist
Apparently not.
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:iconpousazpower:
PousazPower Featured By Owner Jun 26, 2008
Looks more like an aphroditimorph scale worm to me.
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:iconavancna:
avancna Featured By Owner Jul 2, 2008  Hobbyist Traditional Artist
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:iconpousazpower:
PousazPower Featured By Owner Jul 2, 2008
Weird. Never mind.
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:iconavancna:
avancna Featured By Owner Jul 2, 2008  Hobbyist Traditional Artist
Hahaha
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:iconpousazpower:
PousazPower Featured By Owner Jul 2, 2008
The sclerites look heavily calcified. Is there anything regarding taxonomy about these animals?
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:iconavancna:
avancna Featured By Owner Jul 2, 2008  Hobbyist Traditional Artist
Might be a distant relative of brachiopods.
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:iconpousazpower:
PousazPower Featured By Owner Jul 2, 2008
Ancestral lophotrochozoan?
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Submitted on
June 26, 2008
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