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A genus of coelacanths containing the only living species belonging to the order Actinista (See Classification, Osteichthyes, Crossopterygii). L. menaodensis has a cluster of four Hox genes that are more similar to mammals than to ray-finned fishes. It also has an additional gene HoxC1, which was lost during the evolution of mammals from lobed-finned fish. See crossopterygians, Hox genes, living fossil.

Subjects: Genetics and Genomics.

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