Practice question

Tetrapods evolved primarily during Late Devonian period approximately 390 to 360 million years ago from elpistostegalid lobe-finned fishes such as Tiktaalik roseae, Panderichthys rhombolepis, Acanthostega gunnari and Ichthyostega demonstrating progressive fin-to-limb transition, emergence of neck separating pectoral girdle from skull, loss of operculum and development of weight-bearing limbs with digits. Devonian termed Age of Fishes witnessed rising atmospheric oxygen, forest soils creating shallow swamp habitats. Carboniferous radiated fully terrestrial amphibians, Permian reptiles, Jurassic dinosaurs, not primary origin interval. This concept holds high importance for NEET, CBSE board, CUET and competitive examinations focusing on comparative morphology