Placoparia
Placoparia is a genus of trilobites of average size (up to 6 cm) that lived during the late Lower to the early Upper Ordovician on the paleocontinents Gondwana, Avalonia and Laurentia, now the Czech Republic, France, Germany, Morocco, Portugal, Spain and Wales. Its headshield (or cephalon) is semi-circular to rectangular with rounded frontal corners. It lacks eyes, but eye ridges are present. The fact that the facial sutures are opisthoparian (with sutures in Pliomera gonatoparian) is an exception in the otherwise proparian Cheirurina. The thorax has 11 or 12 segments, with the axis slightly wider than the ribs (or pleurae) to its sides. The tips of the pleurae are free, which associates with an old-fashion radiatior of the central heating. The axis in the small tailshield (or pygidium) co
primaryTopic
Placoparia
Placoparia is a genus of trilobites of average size (up to 6 cm) that lived during the late Lower to the early Upper Ordovician on the paleocontinents Gondwana, Avalonia and Laurentia, now the Czech Republic, France, Germany, Morocco, Portugal, Spain and Wales. Its headshield (or cephalon) is semi-circular to rectangular with rounded frontal corners. It lacks eyes, but eye ridges are present. The fact that the facial sutures are opisthoparian (with sutures in Pliomera gonatoparian) is an exception in the otherwise proparian Cheirurina. The thorax has 11 or 12 segments, with the axis slightly wider than the ribs (or pleurae) to its sides. The tips of the pleurae are free, which associates with an old-fashion radiatior of the central heating. The axis in the small tailshield (or pygidium) co
has abstract
Placoparia is a genus of trilo ...... indentations in the cephalon.
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Wikipage page ID
44,659,894
Wikipage revision ID
725,993,392
genus
genus authority
Hawle & Corda, 1847
image caption
Placoparia tournemini, 28mm
subject
hypernym
comment
Placoparia is a genus of trilo ...... ll tailshield (or pygidium) co
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label
Placoparia
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