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Bergamia prima Trilobite Teretiusculos Bizone, Penderig, Builth, Wales Ordovician Age (485.4 -443.8 million years ago ) Trincleioid trilobites are highly specialized, but fall within the Asaphida via their asaphoid protaspides and the presence of the ventral median suture in at least the more primitive representatives of the superfamily. Cephalon: Opisthoparian or marginal facial sutures, generally eyeless; glabella typically convex and pyriform, with 3 or fewer pairs of furrows, preoccipital glabellar tubercle sometimes present; usually long genal spines. Thorax: usually 5 – 8 segments, but only 2-3 segments in progenetic Raphiophoridae, and up to 30 in Seleneceme (Alsataspididae), with long, narrow adaxial pleurae. Pygidium: wide, typically triangular, narrow axis extending to posterior margin, border strongly declined, doublure very narrow. Other: Asaphoid protaspis shows common ancestry; Raphiophorus is the only Trinucleioid (indeed the only representative of the order Asaphida) that continues beyond the Ordovician-Silurian boundary. Families: Alsataspididae, Dionididae, Orometopidae, Raphiophoridae, Trinucleidae, Representative Genera: Ampyxina, Bergamia, Cnemidopyge, Cryptolithus, Dionide, Hapalopleura, Orometopus, Protolloydolithus, Raphiophorus, Seleneceme, Trinucleus. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Asaphida Family: †Trinucleidae Genus: †Bergamia Species: †prima

Bergamia prima Trilobite Teretiusculos Bizone, Penderig, Builth, Wales Ordovician Age (485.4 -443.8 million years ago ) Trincleioid trilobites are highly specialized, but fall within the Asaphida via their asaphoid protaspides and the presence of the ventral median suture in at least the more primitive representatives of the superfamily. Cephalon: Opisthoparian or marginal facial sutures, generally eyeless; glabella typically convex and pyriform, with 3 or fewer pairs of furrows, preoccipital glabellar tubercle sometimes present; usually long genal spines. Thorax: usually 5 – 8 segments, but only 2-3 segments in progenetic Raphiophoridae, and up to 30 in Seleneceme (Alsataspididae), with long, narrow adaxial pleurae. Pygidium: wide, typically triangular, narrow axis extending to posterior margin, border strongly declined, doublure very narrow. Other: Asaphoid protaspis shows common ancestry; Raphiophorus is the only Trinucleioid (indeed the only representative of the order Asaphida) that continues beyond the Ordovician-Silurian boundary. Families: Alsataspididae, Dionididae, Orometopidae, Raphiophoridae, Trinucleidae, Representative Genera: Ampyxina, Bergamia, Cnemidopyge, Cryptolithus, Dionide, Hapalopleura, Orometopus, Protolloydolithus, Raphiophorus, Seleneceme, Trinucleus. Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Asaphida Family: †Trinucleidae Genus: †Bergamia Species: †prima

Cnemidopyge parva trilobite Llandelian, Llandrndod Wells, Radnor, Wales Ordovician Period (485.4-443.8 Million years ago) Cnemidopyge is a genus of trilobites that lived during the Ordovician. Like all Raphiophorids it is blind, with a headshield (or cephalon) that is subtriangular to subsemicircular, carrying genal spines and a forward directed rapier-like spine on the central raised area (or glabella), with the front of the glabella inflated and the natural fracture lines (or sutures) of the cephalon coinciding with its margin. It may be easily distinguished from other raphiophorids by the rectangular thorax with 6 segments, where other genera have a different number of segments and segments change in width over the length of the thorax. Uniquely in this genus, the inner pleural region of the frontal segment is enlarged. Also the axis (or rhachis) and pleural fields of the pygidium are strongly segmented. The trilobite measures 5/8" long and is on a matrix measuring 1 3/8 by 1 1/8 ". Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Asaphida Suborder:† Trinucleina Family: †Raphiophoridae Subfamily: †Raphiophorinae Genus: †Cnemidopyge Species: †parva

Cnemidopyge parva trilobite Llandelian, Llandrndod Wells, Radnor, Wales Ordovician Period (485.4-443.8 Million years ago) Cnemidopyge is a genus of trilobites that lived during the Ordovician. Like all Raphiophorids it is blind, with a headshield (or cephalon) that is subtriangular to subsemicircular, carrying genal spines and a forward directed rapier-like spine on the central raised area (or glabella), with the front of the glabella inflated and the natural fracture lines (or sutures) of the cephalon coinciding with its margin. It may be easily distinguished from other raphiophorids by the rectangular thorax with 6 segments, where other genera have a different number of segments and segments change in width over the length of the thorax. Uniquely in this genus, the inner pleural region of the frontal segment is enlarged. Also the axis (or rhachis) and pleural fields of the pygidium are strongly segmented. The trilobite measures 5/8" long and is on a matrix measuring 1 3/8 by 1 1/8 ". Kingdom: Animalia Phylum: Arthropoda Class: †Trilobita Order: †Asaphida Suborder:† Trinucleina Family: †Raphiophoridae Subfamily: †Raphiophorinae Genus: †Cnemidopyge Species: †parva