By Joseph “PaleoJoe” Kchodl This species of Silurian CALYMENE has a very bulbous and furrowed glabella. The trilobite is roughly triangular in shape with the cephalon that is roughly semi–circular in shape. This trilobite is fairly broad and has a small pygidium. The...
By Joseph “PaleoJoe” Kchodl The COMPTONASPIS swallowi species is another trilobite appearing at the end of the reign of trilobites. There was a catastrophic event at the end of the Permian period, which resulted in the trilobites being wiped out. This...
By Joseph “PaleoJoe” Kchodl This Cambrian trilobite is found in the Wheeler formation of Delta County, Utah. Interestingly, it is quite uncommon to find this trilobite with free cheeks attached. Most examples appear as discarded molt because, with a hard...
By Joseph “PaleoJoe” Kchodl CALYMENE niagarensis is a very common Silurian trilobite found in the Rochester Shale. The trilobite is roughly triangular with a cephalon that is roughly semi-circular in shape. This trilobite is fairly broad, has a small...
By Joseph “PaleoJoe” Kchodl Nevada is known for its grand casinos, but for trilobite hunters, it is known for grand Cambrian trilobites. Equally grand, in terms of trilobite size, is the Nevada native OLENELLUS fremontii. This type of trilobite is known to...
By Joseph “PaleoJoe” Kchodl The featured fossil, a ZACANTHOIDES idahoensis, is a very spiny Cambrian trilobite with a wide cephalon that ends in long genal spines. The thorax is slender and contains nine segments and two pleural lobe sections that end in...
