Mitochondrial genome of the homoscleromorph Oscarella carmela (Porifera, Demospongiae) reveals unexpected complexity in the common ancestor of sponges and other animals.

Abstract excerpt

Homoscleromorpha is a small group in the phylum Porifera (Sponges) characterized by several morphological features (basement membrane, acrosomes in spermatozoa, and cross-striated rootlets of the flagellar basal apparatus) shared with eumetazoan animals but not found in most other sponges. To clarify the phylogenetic position of this group, we determined and analyzed the complete mitochondrial DNA (mtDNA)...

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