Acanthopsetta
Ammotretis
Atheresthes
Azygopus
Clidoderma
Colistium
Cleisthenes
Clidoderma
Colisteum
Dexistes
Embassichthys
Eopsetta
Errex
Glyptocephalus - fluke
Hippoglossoides
Hippoglossus - halibut
Hypsopsetta
Isopsetta
Lepidopsetta
Limanda - mud dabs
Liopsetta - eelback flounder
Lyopsetta
Marleyella
Microstomus - smear dab
Nematops
Oncopterus
Paralichthodes
Parophrys
Pelotretis
Peltorhamphus
Platichthys - starry flounder
Pleuronectes - northern flounder, plaice
Pleuronichthys
Poecilopsetta
Psammodiscus
Psettichthys
Pseudopleuronectes
Reinhardtius
Rhombosolea
Samaris
Samariscus
Tanakius
Taratretis
Verasper
Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria  Acoelomorpha  Orthonectida  Rhombozoa  Myxozoa  Superphylum Deuterostomia     Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascideiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Families Suborder Psettodoidei     Psettodoidae Suborder Pleuronectoidei     Citharidae     Scophthalmidae     Bothidae (lefteye flounders)     Pleuronectidae (righteye flounders)     Paralichthyidae     Achiropsettidae (southern flounders)     Samaridae Suborder Soleoidei     Soleidae (soles)     Achiridae (American soles)     Cynoglossidae (tonguefishes) The flatfish are an order (Pleuronectiformes) of ray-finned fish, also called the Heterosomata, sometimes classified as a suborder of Perciformes. ... Cleisthenes (also Clisthenes or Kleisthenes) was a noble Athenian who reformed the constitution of ancient Athens and set it on a democratic footing in 508 BC. He was a relative of Cleisthenes of Sicyon, through the latters daughter Agarista and her husband Megacles. ... (A) Fluke is another name for trematodes, a kind of flatworm (for example, the Liver Fluke). ... A big halibut (left) A halibut is a type of flatfish. ... Plaice (Pleuronectes platessa) are a species of flatfish, commonly found in the North Sea and Irish Sea. ...