Classification of Amphibians Flashcards

Study Notes

Classification of Amphibians Study Notes

Acanthostega: An early Devonian tetrapod known for well-formed limbs with distinct digits on both forelimbs and hind limbs, indicative of the evolutionary transition from aquatic to terrestrial life.
Amphibia: The class that encompasses all amphibians, characterized by their dual life stages, including both aquatic larval and terrestrial adult forms.
Anura: The order comprising frogs and toads, recognized for their jumping abilities, smooth or bumpy skin, and adaptations to various habitats.
Apoda: The order that includes caecilians, which are legless and burrowing amphibians, adapted for a subterranean lifestyle.
Caudata: The order containing salamanders, newts, and mudpuppies, noted for their elongated bodies, tails, and the ability to regenerate lost limbs.
Chordata: The phylum classifying all amphibians, characterized by the presence of a notochord, dorsal nerve cord, and pharyngeal slits at some stage of development.
Eusthenopteron: A late Devonian lobe-finned fish exhibiting key limb structures, including an upper arm bone and two forearm bones, marking an important step in vertebrate evolution.
Ichthyostega: A significant transitional fossil featuring a developed shoulder girdle, robust limb bones, and muscles, showcasing adaptations essential for life on land.
Tetrapoda: A clade of animals distinguished by four limbs, important in the evolution of vertebrates adapting to terrestrial environments.
Tiktaalik: A crucial transitional fossil that displays morphological features bridging lobe-finned fish and early tetrapods, highlighting the evolutionary shift towards land-dwelling lifestyles.
Vertebrata: The subphylum that includes all amphibians, defined by the presence of a backbone and a complex nervous system, facilitating advanced movement and sensory capabilities.

Description

Enhance your knowledge of amphibians with these flashcards. This quiz covers important classifications, orders, and historical examples within the amphibian class. Perfect for students and enthusiasts alike!