Friday Field Foto #97: Trace fossils in Californian anthropogenite

2009 November 20
by BrianR

A few weeks ago I went up to the Sierra Nevada mountains to get some fresh air and go for a bike ride with some friends. We started our ride at a trailhead parking lot near the town of South Lake Tahoe and as I walked to the restroom I noticed some nice trace fossils preserved in this sedimentary rock from the anthropocene.

I thought it might be raccoon, but they seem to elongate. Anyone have other ideas? To give you a sense of scale, the biggest tracks are about 6-8 cm long.

In case you’re wondering, yes, the other imprints in the “rock” are pine needles.

Happy Friday!

6 Responses leave one →
  1. 2009 November 20
    Tommy permalink

    Those look like Raccoon tracks to me, slightly deformed by being created in wet sediment.

    Top to Bottom

    L Hind Foot

    L Front Foot, R Front Foot

    LHind foot
    R Hind foot
    L Front Foot,
    R front Foot
    L hind foot,
    R hind foot

  2. 2009 November 20

    I agree with Tommy… I went and looked through a gallery of animal tracks; none were great matches, but the raccoon track was closest.

  3. 2009 November 21

    definitely raccoon.

  4. 2009 November 22
    Raccoon 2.0 permalink

    Not sure where you were with respect to the actual range of the Coatimundi, but it is a very racoon-like critter, and is found in parts of the SW US :

    http://www.desertusa.com/may97/du_coati2.html

  5. 2009 November 23

    I vote racoon, also.

  6. 2009 November 23
    Rufus permalink

    I have seen these tracks before. The clue lies in the double outline identifiable in each print. They actually belong to an Eastern Betong wearing flippers circa Pangana era.

    Cheers,
    Rufus,
    Sedentary morphologist,

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