Saturday, February 25, 2012
Calymene Trilobite in Dolomite
Fossil mold of a Calymene celebra? trilobite found in the Laurel Member of the Salamonie Dolomite of Nelson County, Kentucky. This animal scurried along the seafloor in the Silurian Period. Learn more at the Kentucky Paleontological Society web site. Thanks to Kenny for this specimen.
Labels:
laurel dolomite,
silurian,
Trilobite
Tuesday, February 21, 2012
Inoceramus Mega-Blister Pearl Fossil
Inoceramus sp. mega-blister pearl fossil found in the Niobrara formation of Gove County, Kansas. The extinct oyster that produced this beauty lived in the upper Cretaceous Period (about 89 million years ago). Thanks to Mark Palatas for letting me photograph it.
Labels:
Cretaceous,
kansas,
oyster,
pearl
Monday, February 20, 2012
Entelophyllum Museum Grade Coral
This series of pictures shows an Entelophyllum (Wedekind, 1927) coral found in the Louisville Limestone of Jefferson County, Kentucky. Using large amounts of muriatic acid and patience, this coral was revealed from its limestone matrix. It is almost 20 cm long. These first two pictures show evidence of the corallites budding from a parent.
The two images after that show the talons that connected the corallites together. Three species of Entelophyllum are found in the Louisville area: E. eruciforme (Davis), E. rugosum, and E. strictum. This coral is from the Middle Silurian but can sometimes be confused with the Devonian Eridophyllum found in the Jeffersonville Limestone. The genus has also been known in the past by the name Diphyphyllum or Xylodes.
Thanks to Kenny for letting me photograph this specimen and good job on its preparation.
Close ups of the corallites side view.
Close up of some of the coral septas in the colonial mass.
Labels:
coral,
louisville limestone,
silurian
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