The bowfin informs the evolution of the appendage skeleton (IMAGE)
Caption
Schematics show the arrangement of bones in fins and limbs. Elements that are derived from the ancestral metapterygium are shown in magenta. The tetrapod limb and a portion of the bowfin fin arose from the metapterygium, while teleosts have lost the metapterygial components
Credit
M. Brent Hawkins
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With proper citation
License
Original content