Name the bug # 53

Can anyone identify the subject of this photograph?


Attribution to follow.

Update: Identity available here. Photo from here.
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6 comments:

  1. Dave4 April 2011 at 10:05

    Graptolite fossil of some sort.

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  2. Psi Wavefunction4 April 2011 at 10:21

    Thought graptolite too but looks like graptolites tend to have thicker 'teeth'... though Rastrites sp. seems to be the closest fit. Ooooh – longispinus! http://www.redes-cepalcala.org/ciencias1/Images5/fosiles/rastrites_sp.jpg =D

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  3. Adam Yates4 April 2011 at 13:50

    Psi Wavefunction nailed it. So I'm forced to try and steal some points. Rastrites is indeed a graptolite, of the family Monograptidae. Graptolites are pelagic colonial members of the phylum Hemichordata. Diagnostic features of Rastrites are the elongate and isolate nature of each theca along the stipe and their simple apertures. It lived during the Llandovery epoch of the Silurian Period.

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  4. SteveED5 April 2011 at 01:32

    i was going to ask if this was an archaeocyathid in cross section - but then I found the same pic using the graptolite name
    http://www.redes-cepalcala.org/ciencias1/Images5/fosiles/rastrites_sp.jpg

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  5. Mike Keesey5 April 2011 at 02:14

    I was going to guess, "A child's chalk drawing of the Sun," but....

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  6. Christopher Taylor5 April 2011 at 16:24

    Three points to Psi, two to Adam, and one to Dave. The uniserial rhabdosome with long and widely-spaced thecae indicates Rastrites.

    ReplyDelete

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