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I would like to show you all some items I have termed "elongates", so as not to hint as to what they may be. They could be a number of things, but they all form elongated strips. I have grouped them into several different types, based on structure. Interestingly, some of these combine different structures or all of the above, so these may all be the same kind of thing. Some of them extend short, and some of them are very long, taking all kinds of twists and turns. They all show the same structural features whether they are almost microscopic (taken at 250x) or quite visible to the naked eye (taken at 40 or 50x). Each square shown in the scales is 5mm x 5mm. The difference in structural types could be due to weathering down from complex to simple. They could be tracks, feeding tracks or parts of burrows. They could be cruziana, though I have never found anything resembling the "cruziana" I have seen described in numerous illustrations and photos labeled as such. One would think there would be such things in the Wheeler Formation, what with all the trilobites and other fauna there. In the renderings I have seen, cruziana look like TWO of the circular elongates, directly side-by-side, not single strips that I see. First, we have the circular elongates. They look as if something had been feeding in a circular pattern, but all along moving in one direction while doing so. Check out rhizocorallium.
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- wheeler
- middle-cambrian
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