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do we see evidence of Cretaceous life?

One specimen I found amongst unconsolidated Cretaceous sand, pebbles, and boulders appears to me to be a fossil bivalve mollusc. But please understand: I do not know that it is a mollusc.

You must try to help. Look in books, magazines, and on the web for information about any similar specimens. I will write to geologists who are expert in identifying fossil organic specimens. The object has a globular sandstone base, approximately 5.0 cm in diameter. A triangular object projects from the globule. It has base width of 3.0 cm and height of 3.3 cm above the base. The following six images were obtained by means of an Intel camera attached to a PCI card in a Windows 95 based machine. cm long and 3.0 cm wide.

The following four images were obtained with an Intel microscope attached to a USB port on a Windows XP based machine. The magnifications are 10X and 60X.

The first two images were obtained on the globular base.

The second two images were obtained on the supposed bivalve.

The most knowlegable team I have found on the web to ask for help in identifying fossil molluscs is located at the Institute for Geological & Nuclear Sciences, New Zealand. In particular, Dr. Hamish Campbell has studied many Cretaceous mollusc specimens found in New Zealand.

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