Best Trinucleida
Cryptolithus is an extinct genus of trinucleid trilobite that lived during the Ordovician period. It is distinguished by its broad, perforated cephalic fringe, which extends outward from the head and is commonly referred to as a "lace collar." The genus was entirely blind, lacking compound eyes. Fos...
Trinucleus is an extinct genus of trilobites that thrived during the Ordovician period, with fossils primarily located in Wales, Britain, and other parts of Europe. Belonging to the order Trinucleida, this genus lacked eyes and relied on other sensory mechanisms. It is highly distinguished by a broa...
Ampyx is an extinct genus of trilobite from the order Trinucleida that lived during the Ordovician period. These blind trilobites are easily recognized by the long, prominent glabellar spine that extends forward from the front of their cephalon, as well as their distinct genal spines. Fossil specime...
An Ordovician trilobite known for its elongated frontal or rostral spine, found in Baltic and North American Ordovician strata and classified within the order Asaphida.
Ordovician raphiophorid trilobite distinguished by a prominent forward-projecting rostral spine, found across European and North African shallow-marine Ordovician deposits.
Ordovician trinucleid trilobite distributed across Europe and North Africa, notable for a broad cephalic fringe densely perforated by regularly arranged pits whose function remains debated.
Ordovician trinucleid trilobite from European strata, characterized by a wide pitted cephalic fringe and an eyeless cephalon, consistent with the trinucleoid infaunal lifestyle.
Ordovician trinucleid trilobite with a broad cephalic fringe bearing concentric rows of pits, widely distributed across European and North African Late Ordovician shelf deposits.
Small Ordovician raphiophorid trilobite found in European strata, notable for its simplified exoskeleton and reduced pygidium relative to the proportionally large cephalon.
A Devonian trilobite from the Crozon Peninsula of Brittany, France, Crozonaspis is an important zonal fossil for Early Devonian marine strata.
