Lungfish, or dipneustians, first appeared in the Devonian Period, some 400 million years
a~o. Dipterus is one of the oldest and most primitive lungfish genera. It originated some
370 million years ago, obtained a worldwide distribution in the fossil record, and although
It went extinct, it may have been an -ancient ancestor orcousinef-the living African lungfish,
Protopterus. Like all-but the very earliest lungfish, Dipterus,.,p,ossessed specialized teeth, which
were fan-shaped and ridged, to grind down hard prey, such as molluscan and crustacean
shellfish. Lungfish were among the first vertebrate animals to develop air-breathing organs,
lungs, by modifying a type of swim bladder to allow the absorption of oxygen.
Lungfish, or dipneustians, first appeared in the Devonian Period, some 400 million years a~o. Dipterus is one of the oldest and most primitive lungfish genera. It originated some 370 million years ago, obtained a worldwide distribution in the fossil record, and although It went extinct, it may have been an -ancient ancestor orcousinef-the living African lungfish, Protopterus. Like all-but the very earliest lungfish, Dipterus,.,p,ossessed specialized teeth, which were fan-shaped and ridged, to grind down hard prey, such as molluscan and crustacean shellfish. Lungfish were among the first vertebrate animals to develop air-breathing organs, lungs, by modifying a type of swim bladder to allow the absorption of oxygen.
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