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searching for Phylotypic stage 2 found (10 total)

Pharyngula (537 words) [view diff] exact match in snippet view article find links to article

all vertebrate embryos show remarkable similarities, i.e., it is a "phylotypic stage" of the sub-phylum, containing the following features: notochord dorsal

Embryo drawing (3,842 words) [view diff] no match in snippet view article find links to article

classes of vertebrates pass through an evolutionarily conserved "phylotypic" stage of development, a period of reduced phenotypic diversity among higher