Acanthodii or acanthodians is an extinct class of gnathostomes (jawed fishes). They are currently considered to represent a paraphyletic grade of various...

lampreys) Gnathostomata or jawed vertebrates, which include: †Placodermi †Acanthodii Chondrichthyes or cartilaginous fish, (sharks, rays and ratfish) Osteichthyes...

Females attain a larger size than males. The largest of the now-extinct Acanthodii was Xylacanthus grandis, an ischnacanthiform based on a ~35 cm (14 in)...

(chimaeras and extinct relatives) Class Placodermi (armoured fish) † Class Acanthodii ("spiny sharks", sometimes classified under Actinopterygii) † Superclass...

? †Acanthodii...

extinct (armored gnathostomes) └Eugnathostomata (true jawed vertebrates) ├─Acanthodii (stem cartilaginous fish) └─Chondrichthyes (true cartilaginous fish) ├─Holocephali...

Tetanopsyrus is a genus of Acanthodii. There are two species of this genus that lived through the lower Devonian (Lochkovian), some 416 to 359 million...

redescription and reinterpretation of Gyracanthides murrayi Woodward 1906 (Acanthodii, Gyracanthidae) from the Lower Carboniferous of the Mansfield Basin, Victoria...

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...

gnathostomes) Class Chondrichthyes (cartilaginous fish; 900+ species) Class †Acanthodii (Paleozoic "spiny sharks"; paraphyletic in relation to Chondrichthyes)...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

fish known as placoderms, which evolved from the ostracoderms; and the Acanthodii (or spiny sharks). The jawed fish that are still extant in modern days...

Clade: Eugnathostomata Clade: Teleostomi C. L. Bonaparte, 1836 Subgroups †Acanthodii Euteleostomi ("Osteichthyes") Actinopterygii (majority of all fish) Sarcopterygii...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

updated cladogram (Zhu et al., 2016): Paleontology portal Fish portal Acanthodii List of placoderms Ostracoderm Chondrichthyes Entelognathus If paraphyletic...

Gavin F. (2008). "Promesacanthus eppleri n. gen., n. sp., a mesacanthid (Acanthodii, Acanthodiformes) from the Lower Devonian of northern Canada" (PDF). Geodiversitas...

comprehensive listing of all genera that have ever been included in the subclass Acanthodii, excluding purely vernacular terms. The list includes all commonly accepted...

during evolution (e.g. additional dorsal fins, adipose fin). In some †Acanthodii ("spiny sharks"), one or more pairs of "intermediate" or "prepelvic" spines...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

Cyclostomata, which includes lampreys and hagfishes. Paleontology portal Acanthodii Placoderm Benton, Michael (2009) Vertebrate Palaeontology Edition 3, page...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

Podoliacanthus is an extinct genus of Acanthodii ("spiky sharks") which existed in what is now Greenland and Ukraine during the early Devonian period....

den; Newman, Michael; Davidson, Robert (2016). "The diplacanthid fishes (Acanthodii, Diplacanthiformes, Diplacanthidae) from the Middle Devonian of Scotland"...

vertebrates of northern France and Belgium: Part II - Chondrichthyes, Acanthodii, Actinopterygii (Uppermost Silurian to Carboniferous)". Geobios. 28 (1889–1890):...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

†Ptyctodontida †Rhenanida †Acanthothoraci †Pseudopetalichthyida? †Stensioellida? †Acanthodii †Acanthodiformes †"Climatiiformes" †Diplacanthiformes †Ischnacanthiformes...

unterpermischen Acanthodier (Acanthodii: Pisces) des südwestdeutschen Saar-Nahe-Beckens [Revision of the Early Permian acanthodians (Acanthodii : Pisces ) from the...