The kingdom Animalia’s species list
Animals are multicellular, eukaryotic creatures that belong to the biological kingdom Animalia. They are also known as Metazoa. Animals, with very few exceptions, are able to move, breathe oxygen, ingest organic material, reproduce sexually, and go through an ontogenetic stage in which their bodies are formed during the development of the embryo from the blastula, a hollow ball of cells. Although it has been predicted that there are more than 7 million animal species overall, over 1.5 million live animal species have been described, of which over 1 million are insects. Animals can be as little as 8.5 micrometres (0.00033 in) or as large as 33.6 metres (110 ft). Through their intricate connections with one another and their surroundings, they build enormous food webs.
many people The group of animal species known as Bilateria includes creatures with a body design that is bilaterally symmetric. The protostomes, which comprise invertebrates like nematodes, arthropods, and molluscs, and the deuterostomes, which contain echinoderms and chordates, which also include vertebrates, are included in the group called Bilateria. The late Precambrian Ediacaran biota had life forms that have been viewed as the ancestors of modern mammals. During the Cambrian boom, which started around 542 million years ago, many contemporary animal phyla became distinctly established in the fossil record as marine animals. A single common ancestor that lived 650 million years ago may have given rise to the 6,331 gene groupings that are shared by all living things today.
Aristotle distinguished between animals with and without blood historically. The was invented by Carl Linnaeus His Systema Naturae introduced the first hierarchical biological taxonomy for animals in 1758, and Jean-Baptiste Lamarck developed it into 14 phyla by 1809. Ernst Haeckel split the animal world into two groups in 1874: the multicellular Metazoa, which has come to be known as the Animalia, and the Protozoa, which included single-celled creatures no longer regarded as animals. Modern animal categorization relies on cutting-edge methodologies like molecular phylogenetics, which are good at showing the evolutionary links between species.
Numerous animal species are used by humans for various purposes, such as pets, working animals (including as transport), food (including meat, milk, and eggs), materials (such as leather and wool), and food. Many terrestrial and aquatic species have been hunted for sport, along with dogs and raptor birds Nonhuman creatures have been depicted in art since the beginning of time and are important in myth and religion.



The list of Vertebrata subphylum species
All species of creatures belonging to the phylum Vertebrata (chordates with backbones), which also includes all mammals, birds, reptiles, amphibians, and fish, are considered vertebrates. The phylum Chordata, which now has 69,963 species, is dominated by vertebrates.
Hagfish and lampreys are among the fish that lack jaws.
cartilaginous fish (sharks, rays, and ratfish), among other jawed vertebrates
Bony fish, such as ray-fins (which make up the bulk of extant bony fish),
lobe-fins, which are seen in tetrapods (limbed vertebrates) such as lungfish and coelacanths.
Current vertebrates range in size from the tiny 7.7 mm (0.30 in) Paedophryne amauensis frog to the 33 m (108 ft) blue whale. Less than 5% of all known animal species are vertebrates; the majority are the absence of vertebral columns in invertebrates.
The hagfish, one of the conventional vertebrates, lacks appropriate vertebrae as a result of their loss throughout evolution, but its closest surviving cousins, the lampreys, do. However, hagfish do have a skull. For this reason, while discussing morphology, the vertebrate subphylum is occasionally referred to as “Craniata”. According to molecular studies carried out since 1992, hagifish and vertebrates in a monophyletic sense are regarded to be most closely related to lampreys. Others view them as a sister group of vertebrates belonging to the craniata taxon.


The species that belong to the Reptilia class
According to the most prevalent definition, reptiles are any animal that belongs to the class Reptilia, which includes all sauropsid amniotes with the exception of Aves (birds). Living reptiles include turtles, crocodilians, squamates (lizards and snakes), and rhynchocephalians (tuatara). In the traditional Linnaean classification system, birds are seen as belonging to a distinct class than reptiles. The name “Reptilia” has been redefined as a clade in contemporary cladistic classification methods, which include birds inside the group since crocodilians are more closely related to birds than they are to other extant reptiles. According to other cladistic definitions, the name “reptile” is entirely dropped in favour of the clade Sauropsida, which includes all creatures that are more closely related to current reptiles than to mammals. the historical study of the conventional reptile orders, together with that of contemporary amphibians is known as herpetology.
Around 312 million years ago, during the Carboniferous period, the earliest known proto-reptiles emerged from sophisticated reptile morph tetrapods that grew increasingly suited to life on dry ground. Hylonomus, a little creature with outward appearances like lizards, was the first known eureptile (sometimes called as a “true reptile”). The two greatest lineages of reptiles, Archosauromorpha (crocodilians, birds, and kin), and Lepidosauromorpha (lizards and kin), are thought to have separated around the end of the Permian epoch, according on genetic and fossil evidence. Along with the groups of reptiles that are still alive, many other different groups have gone extinct, sometimes as a result of major extinctions. Pterosaurs, Plesiosaurs, and all other non-avian dinosaurs were specifically exterminated during the Cretaceous-Paleogene extinction event, along with several species of crocodyliforms and squamates (such as, mosasaurs). All continents, with the exception of Antarctica, are home to modern non-bird reptiles.
Tetrapod vertebrates, such as snakes, have four limbs, and reptiles are descendants of organisms with four limbs. Reptiles don’t have an aquatic larval stage as amphibians do. The majority of reptiles are oviparous, while certain squamate species as well as several extinct aquatic clades are viviparous. This means that the foetus grows inside the mother utilising a (non-mammalian) placenta rather than being enclosed in an eggshell. Since reptiles are amniotes, their eggs are encased in membranes for both transportation and protection, which allows them to reproduce on dry land. Many viviparous species feed their foetuses through different placental structures like those in mammals, and some of these species even care for their hatchlings at first. The size of existing reptiles ranges from a little From the saltwater crocodile, Crocodylus porosus, which can grow to a length of 6 m (19.7 ft) and weigh over 1,000 kg (2,200 lb), to the gecko, Sphaerodactylus arise, which may grow up to 17 mm (0.7 in) in length.



A list of the family’s species Lacertidae
Native to Afro-Eurasia, the Lacertidae family of lizards includes wall lizards, genuine lizards, and occasionally merely lacertas. With at least 300 species in 39 genera, it is a diverse family. They stand in for the majority of the reptile species found in Europe. The genus Lacerta, which contains certain species of lizards (thus, “true” lizards), is included in this category.
Lacertid species are mostly found in woodland and scrub settings throughout Europe and the Mediterranean. They are replaced by Eremias and Ophisops species throughout Asia’s grasslands and deserts. Species from Africa often inhabit rocky, arid terrain. Two of the rare arboreal lacertid species, Holaspis gantheri and Holaspis laevis, are gliders (albeit reportedly subpar ones), making up the Holaspis genus employing the flattened bodies and large tails as aerofoils.


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