Trilobite - Paradoxides

                               TRILOBITE 

NAME OF THE GENUS : PARADOXIDES

BIO STATUS 

 1) PHYLUM : ARTHROPODA

 2) CLASS    : TRILOBITA

 3) ORDER    : OPISTHOPARIA

SHAPE & SIZE OF

THE BODY CEPHALON : 

                                  Large, elongated, narrowed Posteriorly, almost 7 to 15cm. 

SHAPE :

           Semicircular with genal spines extended backward as long spines. 

GLABELLA : 

           Expands forwards to broadly rounded front, glabellar furrows usually well defined and may unite access mid part of glabella. 

FACIAL SUTURE & CHEEKS : 

           Extends from the anterior, traverse through the cheek & ends in the posterior margin of the Cephalon - Opisthoparian, free cheeks broad with genal spine. 

EYES : 

          Large ; arched. 

GENAL ANGLE : 

           In the from of the spines and with free cheeks. 

THORAX : 

           Long, tapers towards pygidium with 16 to 21 segments, pleasure grooved and ends in long sharp spines directed backward. 

PYGIDIUM : 

           Small, spade - plate with indication of several segments. 

SPECIAL CHARACTERS : 

           Head shield, semicircular, with long genal spines; Glabella expands forward to broadly rounded front ; Opisthoparian ; Crescentic eye ; Thorax tapers towards pygidium with 16 to 21 spiny pleural segments;

Pygidium small. 

Insta