Skull roof & Tetrapod - Unionpedia, the concept map

Acanthostega

Acanthostega (meaning "spiny roof") is an extinct genus of stem-tetrapod, among the first vertebrate animals to have recognizable limbs.

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Actinopterygii

Actinopterygii, members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species.

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Alfred Romer

Alfred Sherwood Romer (December 28, 1894 – November 5, 1973) was an American paleontologist and biologist and a specialist in vertebrate evolution.

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Amniote

Amniotes are tetrapod vertebrate animals belonging to the clade Amniota, a large group that comprises the vast majority of living terrestrial and semiaquatic vertebrates.

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Anapsid

An anapsid is an amniote whose skull lacks one or more skull openings (fenestra, or fossae) near the temples.

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Bird

Birds are a group of warm-blooded vertebrates constituting the class Aves, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

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Caecilian

Caecilians (blind ones) are a group of limbless, vermiform (worm-shaped) or serpentine (snake-shaped) amphibians with small or sometimes nonexistent eyes.

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Carboniferous

The Carboniferous is a geologic period and system of the Paleozoic that spans 60 million years from the end of the Devonian Period Ma (million years ago) to the beginning of the Permian Period, Ma.

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Devonian

The Devonian is a geologic period and system of the Paleozoic era during the Phanerozoic eon, spanning 60.3 million years from the end of the preceding Silurian period at million years ago (Ma), to the beginning of the succeeding Carboniferous period at Ma.

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Diapsid

Diapsids ("two arches") are a clade of sauropsids, distinguished from more primitive eureptiles by the presence of two holes, known as temporal fenestrae, in each side of their skulls.

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Dinosaur

Dinosaurs are a diverse group of reptiles of the clade Dinosauria.

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Elpistostege

Elpistostege is an extinct genus of finned tetrapodomorphs that lived during the Frasnian age of the Late Devonian epoch.

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Embolomeri

Embolomeri is an order of tetrapods or stem-tetrapods, possibly members of Reptiliomorpha.

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Evolution

Evolution is the change in the heritable characteristics of biological populations over successive generations.

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Eye

An eye is a sensory organ that allows an organism to perceive visual information.

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Frog

A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (coming from the Ancient Greek ἀνούρα, literally 'without tail').

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Homology (biology)

In biology, homology is similarity due to shared ancestry between a pair of structures or genes in different taxa.

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Ichthyostega

Ichthyostega (from ἰχθῦς, 'fish' and στέγη, 'roof') is an extinct genus of limbed tetrapodomorphs from the Late Devonian of what is now Greenland.

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Labyrinthodontia

"Labyrinthodontia" (Greek, 'maze-toothed') is an informal grouping of extinct predatory amphibians which were major components of ecosystems in the late Paleozoic and early Mesozoic eras (about 390 to 150 million years ago).

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Lungfish

Lungfish are freshwater vertebrates belonging to the class Dipnoi.

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Nature (journal)

Nature is a British weekly scientific journal founded and based in London, England.

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Operculum (fish)

The operculum is a series of bones found in bony fish and chimaeras that serves as a facial support structure and a protective covering for the gills; it is also used for respiration and feeding.

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Orbit (anatomy)

In anatomy, the orbit is the cavity or socket/hole of the skull in which the eye and its appendages are situated.

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Osteichthyes

Osteichthyes, also known as osteichthyans or commonly referred to as the bony fish, is a diverse superclass of vertebrate animals that have endoskeletons primarily composed of bone tissue.

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Panderichthys

Panderichthys is a genus of extinct sarcopterygian (lobe-finned fish) from the late Devonian period, about 380 Mya.

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Robert L. Carroll

Robert "Bob" Lynn Carroll (May 5, 1938 – April 7, 2020) was an American–Canadian vertebrate paleontologist who specialised in Paleozoic and Mesozoic amphibians and reptiles.

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Salamander

Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults.

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Sarcopterygii

Sarcopterygii — sometimes considered synonymous with Crossopterygii — is a clade (traditionally a class or subclass) including both a group of bony fish commonly referred to as lobe-finned fish, and tetrapods.

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Skull

The skull is a bone protective cavity for the brain.

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Stegocephali

Stegocephali (often spelled Stegocephalia, from Greek στεγοκεφαλια, lit. "roofed head") is a clade of vertebrate animals containing all fully limbed tetrapodomorphs.

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Synapsida

Synapsida is one of the two major clades of vertebrate animals in the group Amniota, the other being the Sauropsida (which includes reptiles and birds).

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Temnospondyli

Temnospondyli (from Greek τέμνειν, temnein 'to cut' and σπόνδυλος, spondylos 'vertebra') or temnospondyls is a diverse ancient order of small to giant tetrapods—often considered primitive amphibians—that flourished worldwide during the Carboniferous, Permian and Triassic periods, with fossils being found on every continent.

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Tetrapod

A tetrapod is any four-limbed vertebrate animal of the superclass Tetrapoda.

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Tetrapodomorpha

Tetrapodomorpha (also known as Choanata) is a clade of vertebrates consisting of tetrapods (four-limbed vertebrates) and their closest sarcopterygian relatives that are more closely related to living tetrapods than to living lungfish.

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Tiktaalik

Tiktaalik (Inuktitut ᑎᒃᑖᓕᒃ) is a monospecific genus of extinct sarcopterygian (lobe-finned fish) from the Late Devonian Period, about 375 Mya (million years ago), having many features akin to those of tetrapods (four-legged animals).

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Turtle

Turtles are reptiles of the order Testudines, characterized by a special shell developed mainly from their ribs.

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