Author Topic: Opabinia  (Read 2434 times)

Vermin King

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Opabinia
« on: November 13, 2012, 11:41:14 PM »

"This science paper model is a three-dimensional (3D) Opabinia, an extinct stem-arthropod genus found in Cambrian fossil deposits, designed by soilshop. The only known species, O. regalis, is known from the Middle Cambrian Burgess Shale Lagerstätte of British Columbia, Canada. Fewer than twenty good specimens have been described; 3 specimens of Opabinia are known from the Greater Phyllopod bed, where they comprise less than 0.1% of the community.

"Opabinia was a soft-bodied animal of modest size, and its segmented body had lobes along the sides and a fan-shaped tail. The head shows unusual features: five eyes, a mouth under the head and facing backwards, and a proboscis that probably passed food to the mouth. Opabiniaprobably lived on the seafloor, using the proboscis to seek out small, soft food.

"When the first thorough examination of Opabinia in 1975 revealed its unusual features, it was thought to be unrelated to any known phylum, although possibly related to a hypothetical ancestor of arthropods and of annelid worms. However other finds, most notably Anomalocaris, suggested that it belonged to a group of animals that were closely related to the ancestors of arthropods and of which the living animals onychophorans and tardigrades may also be members.

"In the 1970s there was an ongoing debate about whether multi-celled animals appeared suddenly during the Early Cambrian, in an event called the Cambrian explosion, or had arisen earlier but without leaving fossils. At first Opabinia was regarded as strong evidence for the “explosive” hypothesis. Later the discovery of a whole series of similar lobopod animals, some with closer resemblances to arthropods, and the development of the idea of stem groups suggested that the Early Cambrian was a time of relatively fast evolution but one that could be understood without assuming any unique evolutionary processes." ... PapercraftSquare

Can be found at http://www.k4.dion.ne.jp/~soilshop/papeclaft_opabinia.html
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Dave Winfield

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Re: Opabinia
« Reply #1 on: November 14, 2012, 03:53:36 PM »
an excellent and unique model find!!!
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Vermin King

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Re: Opabinia
« Reply #2 on: November 14, 2012, 04:32:49 PM »
I plan on using him for a Sci Fi Menace.  I think it would still be fairly buildable at 73%, but definitely not a quick build.

And only found in Canada!
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milenio3

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Re: Opabinia
« Reply #3 on: November 20, 2012, 12:37:29 PM »
Very interesting!

I live in an apartment complex, and one whole wall of the limit of the complex is a deposit of fossils. I found one of these kind of fossils on it, but I don"t think it's this exact kind.

Photo coming soon.
- Gerardo
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milenio3

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Re: Opabinia
« Reply #4 on: November 20, 2012, 04:35:17 PM »
Photo of the fossil found in my front-yard.

A wall full of fossils. In the top middle you can see my subject in brownish color.



Zooming in... but again, it may not be the same, but similar.



Or what do you think?
- Gerardo
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Vermin King

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Re: Opabinia
« Reply #5 on: November 20, 2012, 05:59:52 PM »
Looks like a trilobite to me
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