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Small Fish Fossil Plate

R 70.00
SKU: S019
  • Description
  • Shipping
  • Description
  • Small detailed fish fossil plates from the Green River Formation in the USA

    Size:  80mm to 100mm

    Weight:  

    During the Eocene, based on the fossil record, the region was sub-tropical to temperate. Some 60 vertebrate taxa have been described from the formation, as well as abundant invertebrates and plants. Green river has been noted for its well-preserved fish since mid-way through the 19th century. The unusually excellent preservation of the Green River fish fossils is usually attributed to a combination of two factors: 1) a cold period during the Eocene that would have caused dead fish to sink faster due to a less inflated swim bladder; and 2) the great depth of the lakes and the consequent anoxic conditions that would have often prevented scavengers from disturbing the carcasses.

    Most fish fossils are taken from the Fossil Lake area are from two layers: 1) the so-called 18-inch layer; and 2) the split fish layer. The best-preserved fish come from the 18-inch layer. Because the sediment is highly laminated; the fish can often be removed nearly whole. This layer, in the area near Fossil Butte, does indeed average about 18 inches in thickness, and represents some 4000 of deposition. The composition of the limestone indicates that the layer was formed in deep water far from shore. By contrast, the so-called split-fish layer is unlaminated making extraction and preparation of the best fossil fish far more difficult. The layer is about six feet thick, and the fauna indicates water that was better circulated than that associated with the 18-inch layer. Some 19 genera of Eocene fish come from the Green River formation.

    All pictures are taken in a light studio.  We do try to ensure that the images are as accurate as possible but colours may vary.

    The piece in the photos are of the piece you will receive.

  • Shipping
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    - The Courier Guy (Door to Door)                                                    R85

    Normally Overnight to major center, 2-4 days to outlying areas

    - Pudo (Locker to Locker)                                                                 R50

    Find the closet Pudo locker to you, let us know when you place

    your order and collect at your convenience

    -  Ararmex (Store to Door)                                                               R100

    Normally Overnight to major center, 2-4 days to outlying areas

    - Collection                                                                                         Free

    Orders can be collected at our store in Franschhoek or at one of

    our events.  Please let us know where you wish to collect your 

    order and please wait for confirmation that the order is ready

    before collecting

     

    We try our best to ship all orders within 1 day of receiving payment

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