Agnatha (/ˈæɡnəθə, æɡˈneɪθə/; from Ancient Greek ἀ- (a-) 'without' and γνάθος (gnáthos) 'jaws') is an infraphylum of jawless fish in the phylum Chordata...

Vertebrates comprise groups such as the following infraphyla and classes: Agnatha or jawless fish, which include: †Conodonta †Ostracodermi Cyclostomi (hagfish...

(Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 33,400 species of fish had been described as of...

Examples of infraphyla include the Mycetozoa, the Gnathostomata and the Agnatha. Hutchinson 1973. Hutchinson, John (1973). The families of flowering plants...

The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Infraphylum: Agnatha Genus: †Areyongalepis Young, 2000 Species: †A. oervigi Binomial name †Areyongalepis...

Fish vary greatly in size. The whale shark and basking shark exceed all other fish by a considerable margin in weight and length. Fish are a paraphyletic...

taxonomy. Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified...

systematic index. It includes 40 species of Chondrichthyes, three species of Agnatha, the other are bony fishes. The following tags are used to indicate the...

cartilaginous fishes or primitive vertebrates. Cope (1889) coined the name Agnatha ("jawless") for a group that included the cyclostomes and a number of fossil...

with Metaspriggina and the other craniates (both gnathostomatans and Agnatha) grouped with Branchiostoma and the cephalochordates, and Pikaia out on...

(Craniata) (vertebrates – animals with backbones; 66,100+ species) Superclass 'Agnatha' paraphyletic (jawless vertebrates; 100+ species) Class Cyclostomata Infraclass...

classifications. Traditional classification divides fish into three extant classes (Agnatha, Chondrichthyes, and Osteichthyes), and with extinct forms sometimes classified...

first craniates and vertebrates. The first fish lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys. During the late...

Märss, Tiiu, Mark VH Wilson, and Raymond Thorsteinsson. "New thelodont (Agnatha) and possible chondrichthyan (Gnathostomata) taxa established in the Silurian...

jointed bones; in cartilaginous fish (Chondrichthyes) and jawless fish (Agnatha), fins are fleshy "flippers" supported by a cartilaginous skeleton. Fins...

Obruchev, D.V. and Mark-Kurik, E.Yu., Psammosteidy (Agnatha, Psammosteidae) devona SSSR (Psammosteids (Agnatha, Psammosteidae) from the Devonian of the USSR)...

million years. The Subclass Ostracodermi has been placed in the division Agnatha along with the extant Subclass Cyclostomata, which includes lampreys and...

morphological phylogenetic studies place lampreys and hagfish in the infraphylum Agnatha or Agnathostomata (both meaning without jaws). The other vertebrate infraphylum...

This article contains a list of all of the classes and orders that are located in the Phylum Chordata. Order Amphioxiformes Order Enterogona Order Pleurogona...

Conodonta †           Subphylum Vertebrata             Infraphylum Agnatha             Infraphylum Gnathostomata   Subkingdom Mesozoa     Phylum Mesozoa...

among jawless vertebrates have varied. Most workers have come to regard Agnatha as paraphyletic, having given rise to the jawed fishes. Because of shared...

myriapoda – arachnids – insects – annelids – molluscs Vertebrates: fishes: – agnatha – chondrichthyes – osteichthyes Tiktaalik tetrapods amphibians reptiles...

States. David K. Elliott & Michael A. Petriello (2011). "New poraspids (Agnatha, Heterostraci) from the Early Devonian of the western United States". Journal...

chordates. Some fish, both bony fish (Osteichthyes) and jawless fish (Agnatha), undergo metamorphosis. Fish metamorphosis is typically under strong control...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Infraphylum: Agnatha Class: †Pteraspidomorphi Family: †Sacabambaspidae Genus: †Sacabambaspis...

distribution. Species: Trichocerca abilioi Segers & Sarma, 1993 Trichocerca agnatha Wulfert, 1939 "Trichocerca Lamarck, 1801". www.gbif.org. Retrieved 27 February...

used the term Amphirhina. It is a sister group of the jawless craniates Agnatha. Vertebrate classes The appearance of the early vertebrate jaw has been...

endocranium, the most basal portion of the skull. In Chondrichthyes and Agnatha, the occipital does not form as a separate element, but remains part of...

Liu; Lian-Tao Jia; Zhi-Kun Gai (2012). "A new genus of eugaleaspidiforms (Agnatha: Galeaspida) from the Ludlow, Silurian of Qujing, Yunnan, Southwestern...