| Term: | caudal fin principal ray mineral |
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| Note: | This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name. |
| Name: | caudal fin principal ray |
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| Synonyms: | caudal principal lepidotrichium, caudal principal ray |
| Definition: | Caudal fin lepidotrichium that is adjacent to a branched ray. Caudal principal rays may be segmented but unbranched and the main element forming the dorsal or ventral leading margin of the caudal fin or a ray that may be only segmented and branched and forms part of the middle-posterior region of the fin. A caudal principal ray is an unpaired median bone. There are 19 principal caudal rays, with 10 in the dorsal lobe and nine in the ventral lobe. The dorsal lobe rays articulate with hypurals 3-5. |
| Ontology: | Anatomy Ontology [ZFA:0001585] |
| Name: | mineral |
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| Synonyms: | mineral, Minerale, minerales, minerals, mineraux |
| Definition: | In general, a mineral is a chemical substance that is normally crystalline formed and has been formed as a result of geological processes. The term also includes metamict substances (naturally occurring, formerly crystalline substances whose crystallinity has been destroyed by ionising radiation) and can include naturally occurring amorphous substances that have never been crystalline ('mineraloids') such as georgite and calciouranoite as well as substances formed by the action of geological processes on bigenic compounds ('biogenic minerals'). |
| Ontology: | ChEBI [CHEBI:46662] ( EBI ) |