Archipterygium theory
Archipterygium (or ancient fin) is the concept of a primitive limb from which the limbs of tetrapod animals evolved. The idea was proposed by Karl Gegenbaur in 1878, sometimes termed the gill septum hypothesis and it consisted of a series of rays, one ray large with the remaining small ones attached to the sides of the large one. Gegenbaur based this idea on the fin of Ceratodus and its similarity to the gill-region in Elasmobranchs. He suggested that the pentadactyl limb of modern tetrapods was derived from one side of the archipterygium. Thomas Huxley examined the idea and argued against it. He suggested that the tetrapod limb or cheiropterygium differed in its origins from that of the lungfish and that the two may have diversified from a true ancestral archipterygium. An alternate origi
Link from a Wikipage to another Wikipage
primaryTopic
Archipterygium theory
Archipterygium (or ancient fin) is the concept of a primitive limb from which the limbs of tetrapod animals evolved. The idea was proposed by Karl Gegenbaur in 1878, sometimes termed the gill septum hypothesis and it consisted of a series of rays, one ray large with the remaining small ones attached to the sides of the large one. Gegenbaur based this idea on the fin of Ceratodus and its similarity to the gill-region in Elasmobranchs. He suggested that the pentadactyl limb of modern tetrapods was derived from one side of the archipterygium. Thomas Huxley examined the idea and argued against it. He suggested that the tetrapod limb or cheiropterygium differed in its origins from that of the lungfish and that the two may have diversified from a true ancestral archipterygium. An alternate origi
has abstract
Archipterygium (or ancient fin ...... ry morphology and development.
@en
Wikipage page ID
51,063,159
page length (characters) of wiki page
Wikipage revision ID
764,692,393
Link from a Wikipage to another Wikipage
wikiPageUsesTemplate
subject
comment
Archipterygium (or ancient fin ...... ipterygium. An alternate origi
@en
label
Archipterygium theory
@en