Merry Christmas to all and may Santa bring you lots of nice fossils!
For the curious this image is a composite of four different fossils. The main tree body is an unidentified Devonian Period horn coral from the Jeffersonville Limestone of Clark County, Indina. The tree trunk is a unidentified crinoid stem from Lake Cumberland, Kentucky (Mississippian Period, Fort Payne Formation). The ornaments are Pentremites blastoids from Crawford County, Indiana (Haney Formation(?) and Mississippian Period). The star is a crinoid stem cross section from the same area the blastoids were found at. Artistic license was exercised with the fossil colors and illumination.