Science Olympiad - Fossils - Trilobites - Exoskeleton Terms

13 terms by Jaystriker7 

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A list of terms relating to the exoskeleton of the trilobite.

left pleural lobe

The leftmost lobe of a trilobite's body

axial lobe

The central lobe of a trilobite's body

right pleural lobe

The rightmost lobe of a trilobite's body

tagma

A section of an arthropod's body (singular)

tagmata

A section of an arthropod's body (plural)

cephalon

Head region of a trilobite

thorax

Body region of a trilobite

pygidium

Tail region of a trilobite

pleurae

Segmented regions on thorax that protect gills and limbs

glabella

Dome on the axial lobe and in the cephalon. Houses the stomach.

apodeme

Projections on ventral side of a trilobite; many leg muscles attached to these.

telson

Tail fan that is part of the pygidium

Lichida

Order of trilobites that has evolved spines

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