Tar´si-us [Gr. tarsos, any flat surface.]

Tax-o-nom´ic [Gr. taxis, orderly arrangement; nemein, distribute.] Pertaining to systematic classification.

Tel-e-os´to-mi [Gr. teleos, perfect; stoma, mouth.] A division of fishes with well-developed dentary and maxillary and membrane bones; includes all fishes except Elasmobranchii and lower forms.

Tel´e-osts [Gr. teleos, perfect; osteon, bone.] A subdivision of Teleostomi that includes most fishes; decussation of optic nerves; non-contractile arterial bulb.

Ter´ti-a-ry [Lat. tertius, third.]

Tet´ra-o cu´pi-do [Lat. tetrao, pheasant; Cupido, the God of Love.]

Thal-am-en-ceph´a-lon [Gr. thalamos, chamber; enkephalos, brain.] A fundamental segment of the brain.

Thal´a-mi [Gr. thalamos, chamber.] The lateral boundaries of the thalamencephalon.

Thal´loph´y-ta [Gr. thallos, young branch; phyton, plant.]

The-ro-mor´pha [Gr. ther, beast; morphe, form.]