Zoology

air-breathing arthropods characterized by simple eyes and four pairs of legs

air-breathing arthropods characterized by simple eyes and four pairs of legs

invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin

radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa…

radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa…

any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and…

any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and…

any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms

any cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct forms

mite or tick

sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed

primitive reptile having no opening in the temporal region of the skull; all extinct except turtles

primitive reptile having no opening in the temporal region of the skull; all extinct except turtles

sessile marine coelenterates including solitary and colonial polyps; the medusoid phase is entirely suppressed

horseshoe crab of the coast of eastern Asia

chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified…

used in some classifications; includes the orders Xiphosura and Eurypterida

any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton

spiderlike arachnid with a small rounded body and very long thin legs

reptile having a pair of openings in the skull behind each eye

reptile having a pair of openings in the skull behind each eye

used in former classifications to include all living reptiles except turtles; superseded by the two subclasses Lepidosauria and Archosauria

large extinct scorpion-like arthropod considered related to horseshoe crabs

mammals having a placenta; all mammals except monotremes and marsupials

mammals having a placenta; all mammals except monotremes and marsupials

small nonvenomous arachnid resembling a tailless scorpion

animals that nourish their young with milk

a burrowing mammal having limbs adapted for digging

minute arthropod often infesting the underground parts of truck-garden and greenhouse crops

minute arthropod often infesting the underground parts of truck-garden and greenhouse crops

spiderlike arachnid with a small rounded body and very long thin legs

large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail;…

colonial coelenterates having the polyp phase dominant

colonial coelenterates having the polyp phase dominant

small air-breathing arthropod

an insect or other arthropod between molts

any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans

large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail;…

large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail;…

one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelat…

one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelat…

one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelat…

used in some classifications; includes the orders Xiphosura and Eurypterida

primitive pouched mammals found mainly in Australia and the Americas

any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs

any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs

any of numerous herbivorous nonpoisonous arthropods having a cylindrical body of 20 to 100 or more segments most with two pairs of legs

general term for any terrestrial arthropod having an elongated body composed of many similar segments: e.g. centipedes and millipedes

any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid wo…

wormlike arthropod having two pairs of hooks at the sides of the mouth; parasitic in nasal sinuses of mammals

any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid wo…

spiderlike arachnid with a small rounded body and very long thin legs

mammals having a placenta; all mammals except monotremes and marsupials

mammals having a placenta; all mammals except monotremes and marsupials

one of two forms that coelenterates take (e.g. a hydra or coral): usually sedentary with a hollow cylindrical body usually with a ring of tentac…

primitive oviparous mammals found only in Australia and Tasmania and New Guinea

small nonvenomous arachnid resembling a tailless scorpion

any of various small spiderlike marine arthropods having small thin bodies and long slender legs

arachnid of warm dry regions having a long segmented tail ending in a venomous stinger

minute arthropod often infesting the underground parts of truck-garden and greenhouse crops

any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle

any of various small spiderlike marine arthropods having small thin bodies and long slender legs

predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body; they spin s…

used in former classifications to include all living reptiles except turtles; superseded by the two subclasses Lepidosauria and Archosauria

minute arthropod often infesting the underground parts of truck-garden and greenhouse crops

extinct reptile having a single pair of lateral temporal openings in the skull

extinct reptile having a single pair of lateral temporal openings in the skull

an arthropod of the division Tardigrada

wormlike arthropod having two pairs of hooks at the sides of the mouth; parasitic in nasal sinuses of mammals

an extinct arthropod that was abundant in Paleozoic times; had an exoskeleton divided into three parts

any mammal with prominent tusks (especially an elephant or wild boar)

any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid wo…

nonvenomous arachnid that resembles a scorpion and that has a long thin tail without a stinger

nonvenomous arachnid that resembles a scorpion and that has a long thin tail without a stinger

large marine arthropod of the Atlantic coast of North America having a domed carapace that is shaped like a horseshoe and a stiff pointed tail;…

having a backbone or spinal column; "fishes and amphibians and reptiles and birds and mammals are vertebrate animals"

any animal lacking a backbone or notochord; the term is not used as a scientific classification

practice of classifying plants and animals according to their presumed natural relationships

nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata

marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton

nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata

toothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites

marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged s…

nocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate

insect having biting mouthparts and front wings modified to form horny covers overlying the membranous rear wings

typical crabs

aquatic crustaceans typically having a carapace and many pairs of leaflike appendages used for swimming as well as respiration and feeding

mature male of various mammals (especially deer or antelope)

general term for any insect or similar creeping or crawling invertebrate

insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis

mature male of various mammals of which the female is called ‘cow’; e.g. whales or elephants or especially cattle

a terrestrial or aquatic flesh-eating mammal; "terrestrial carnivores have four or five clawed digits on each limb"

a reptile of the order Chelonia

marine crustaceans with feathery food-catching appendages; free-swimming as larvae; as adults form a hard shell and live attached to submerged s…

arboreal nocturnal mammal of southeast Asia and the Philippines resembling a lemur and having a fold of skin on each side from neck to tail that…

any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes

any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes

minute marine or freshwater crustaceans usually having six pairs of limbs on the thorax; some abundant in plankton and others parasitic on fish

marine colonial polyp characterized by a calcareous skeleton; masses in a variety of shapes often forming reefs

mature female of mammals of which the male is called ‘bull’

extant archosaurian reptile

crustaceans characteristically having five pairs of locomotor appendages each joined to a segment of the thorax

an animal that walks so that only the toes touch the ground as e.g. dogs and cats and horses

insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth p…

mature female of mammals of which the male is called ‘buck’

any of numerous insects of the order Dermaptera having elongate bodies and slender many-jointed antennae and a pair of large pincers at the rear…

primitive terrestrial mammal with few if any teeth; of tropical Central America and South America

anything short-lived, as an insect that lives only for a day in its winged form

anything short-lived, as an insect that lives only for a day in its winged form

in some classifications considered a suborder of Carnivora

any wingless bloodsucking parasitic insect noted for ability to leap

any of various insects that deposit their eggs in plants causing galls in which the larvae feed

relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing

insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis

insects that undergo complete metamorphosis

insects having membranous forewings and hind wings

small tubular solitary freshwater hydrozoan polyp

insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing

insects having two pairs of membranous wings and an ovipositor specialized for stinging or piercing

any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes