Skip to main content
Fig. 7 | Zoological Letters

Fig. 7

From: Comparative analysis of Hmx expression and the distribution of neuronal somata in the trigeminal ganglion in lamprey and shark: insights into the homology of the trigeminal nerve branches and the evolutionary origin of the vertebrate jaw

Fig. 7

Schematic diagram for the evolution of the trigeminal nerve branches. a “rV2/3B = rV3” hypothesis, where the lamprey rV2/3B is regarded as homologous to the gnathostome rV3. b “rV2/3A = rV3” hypothesis, where the lamprey rV2/3A and the gnathostome rV3 are thought to be homologous. The gnathostome counterpart of the lamprey rV2/3B may have been lost in the gnathostome lineage

Back to article page

Zoological Letters

ISSN: 2056-306X

Contact us