Phy-lo-ge-net´ic [Vid. phylogeny.] Pertaining to phylogeny.
Pith´e-coid [Gr. pithekos, ape; eidos, like.]
Pith-e-can-thro´pus [Gr. pithekos, ape; anthropos, man.]
Pla-gi-os´to-mi [Gr. plagios, oblique; stoma, mouth.] A division of Elasmobranchii, including sharks and rays.
Pla-cen´tal [Lat. placenta, cake.] So called on account of its shape. Pertaining to the placenta, the organ of attachment of higher vertebrate (monodelph) embryos to the wall of the uterus of the female.
Plas´tids [Gr. plastos, formed.]
Plat-y-hel-min´thes [Gr. platys, flat; helminos, worm.]
Plat-y-rhi´næ [Gr. platys, broad, flat; rhis, nose.] Monkeys of the New World having long tails and a wide septum to the nose.
Pleur-a-can´thus [Gr. pleuron, rib; akantha, thorn.]
Pleu´ral [Gr. pleura, rib, side.]