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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

The condition or state of having a heterocercal tail.  1, record 1, English, - heterocercy

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

L'hétérocercie est présente chez divers actinoptérygiens paléozoïques, chez les chondrichtyens (poissons cartilagineux tels que les requins, [les] raies et [les] poissons-scie) qui ont généralement une nageoire épicerque ou hypercerque.  1, record 1, French, - h%C3%A9t%C3%A9rocercie

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

An internally and externally symmetrical tail (caudal) fin  4, record 2, English, - diphycercal%20caudal%20fin

Record number: 2, Textual support number: 1 CONT

Polypteriformes(bichirs and reedfish) possess a secondarily derived, externally symmetrical diphycercal caudal fin with several notable characteristics, including the inclusion of pterygiophores originating from the dorsal fin; this organization differs significantly both from other actinopterygians and from the ancestral heterocercal caudal fin shape...  1, record 2, English, - diphycercal%20caudal%20fin

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

[A] tail fin where the lower lobe is the longer and is supported by the vertebral column.  2, record 3, English, - hypocercal%20caudal%20fin

Record number: 3, Textual support number: 1 OBS

Asymmetrical externally as well as internally.  2, record 3, English, - hypocercal%20caudal%20fin

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Les «thélodontes» ont une nageoire caudale hypocerque, comme les anaspides (et les lamproies).  1, record 3, French, - nageoire%20caudale%20hypocerque

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

A homocercal tail is a caudal fin composed of two lobes of equal proportion. Homocercal tails are the most common caudal fin type in fish but can come in many symmetrical shapes. A homocercal tail is contrasted with a heterocercal tail which has unequal lobes.  3, record 4, English, - homocercal%20caudal%20fin

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

La plupart des actinoptérygiens modernes ont une queue homocerque, c'est-à-dire que le lobe du haut et le lobe du bas sont presque égaux et symétriques, comme par exemple la queue du saumon. Par contre, [les espèces du genre] Cheirolepis avaient une queue épicerque, c'est-à-dire que l'axe de [leur] corps se poursuivait dans un lobe supérieur plus développé.  2, record 4, French, - nageoire%20caudale%20homocerque

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

A heterocercal tail is a caudal fin composed of two asymmetrical lobes. Often, such as the case in many sharks, the vertebral column passes through the upper lobe, making it the larger of the two lobes. A heterocercal tail is contrasted with a homocercal tail which has equal lobes.  2, record 5, English, - heterocercal%20caudal%20fin

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Two chondrostean lineages survive today : the sturgeons of Eurasia and North America, and the paddlefish of North America and China. These two lineages have secondarily lost a number of actinopterygian traits : they lack scales on most of the body, have a cartilaginous skeleton, and have developed a shark-like, heterocercal tail and a rostrum extending past the mouth.  1, record 6, English, - chondrostean

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Chez les Chondrostéens, représentés actuellement par l'esturgeon (Acipenser), la corde dorsale ne disparaît pas et la colonne vertébrale reste cartilagineuse.  1, record 6, French, - chondrost%C3%A9en

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 OBS

Extinct fish of the Devonian Period belonging to the subelass "Crossopterygii" and therefore closely related to the ancestors of land vertebrates. They had a well ossified skull including a ring of bones around each orbit... The body was covered with cosmoid scales. The paired fins were of the "archipterygian" type and the tail was slightly heterocercal.  1, record 7, English, - osteolepis

Record number: 7, Textual support number: 2 OBS

Order of early Crossopterygian fish. Osteolepids occur in Old Red Sandstone and Carboniferous rocks. They are thought to be the ancestral origins of the terrestrial vertebrates.  2, record 7, English, - osteolepis

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 OBS

Ils présentent des narines internes ou «choanes» faisant communiquer les orifices nasaux avec la bouche comme chez les vertébrés à respiration pulmonaire. La disposition des os de la tête rappelle à la fois celle de «Palaeoniscus» et celle des Amphibiens Stégocéphales les plus primitifs [...]  1, record 7, French, - osteolepis

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 OBS

[In the heterocercal] type of caudal fin [, which is] common in more primitive fish,... the body, containing the backbone, tips up posteriorly, and nearly all the development of the fin takes place beneath.  2, record 8, English, - heterocercal

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 OBS

[...] chez les Poissons [...] [le type hétérocerque de nageoire caudale] se rencontre communément dans les formes les plus anciennes [...]. [Dans ce type] la colonne vertébrale se redresse vers le haut, et c'est en dessous de ce prolongement que la nageoire caudale prend son plus grand développement.  2, record 8, French, - h%C3%A9t%C3%A9rocerque

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

[Refiérese a la] aleta natatoria caudal de lóbulos asimétricos.  1, record 8, Spanish, - heterocerca

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

[The "homocercal tail" fin is] externally more or less symmetrical but internally like a shortened heterocercal type; [it is] found in all higher fishes and derived during embryology from the heterocercal type.... It is seen that the tail fin is formed largely or wholly of the ventral part of the fin of the heterocercal tail with a great reduction or loss of the dorsal part. This ventral fin has become secondarily bilaterally symmetrical, so that the homocercal tail appears symmetrical externally.  2, record 9, English, - homocercal

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

La nageoire caudale [des poissons] présente trois types principaux [dont le type "homocerque" où] la colonne vertébrale ne se prolonge pas dans la nageoire caudale aux deux lobes égaux [...]  2, record 9, French, - homocerque

Record number: 9, Textual support number: 2 CONT

Queue homocerque.  3, record 9, French, - homocerque

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

[Dícese de la] aleta natatoria caudal de lóbulos simétricos.  1, record 9, Spanish, - homocerca