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Hello Everyone! Found this plate at a Maryland fossil site of Mid-Silurian age in the McKenzie Formation/Rochester shale. First thought was plant but plant fossils in north America first show up in the late Silurian. microscope pictures don't show any cellular structure, though early plants would not have xylem. When rubbed a black dust comes of it, but not super crumbly like low grade coal. Could be hematized worm burrow? Not the typical type of preservation here. The environment is shallow water, with the main fossils being ostracods, brachiopods, tentaculitids, and some worm burrows that look quite different from this. Next to it is a silvery fossil (typical preservation, don't know what mineral it is) with many little holes in it. What say you? First up, micro shots
I wanted to complete drawings of all the reported Silurian Trilobites from Caleb's Quarry in Middleport, NY. I started late in December and finish today April 5th. Drawing was enjoyable, but got to be work towards the end. Top left to right: Arctinurus boltoni, Bumastus ioxus, Dicalymene sp., Calymene niagarensis,Decoroproetus corycoeus. Bottom left to right: Dalmanites limulurus, Dicranopeltis nereus, Illaenus insignis, Radnoria bretti and Trimerus delphinocephalus.
I thought I might draw a rare bug from my own Western New York area. The drawing is of the Silurian Lichid Trilobite: Dicranopeltis nereus. This particular fossil is a highly sought after specimen from the Rochester Shale; not many have been found in the renowned Caleb's quarry of Middleport, NY. Of all my drawings, this one took the longest because of all the little pustules covering the surface.