Figure 1.

Benthosema glaciale, © Rudolf Svendsen, Høgsfjorden, Norway. Standard myctophid photophore terminology noted with photophores/luminescent organs truncated if found in other myctophids than B. glaciale. Abbreviations: Ant – Anterior orbital (antorbital), AOa – Anal organs anterior, AOp – Anal organs posterior, Dn – Dorsal nasal (dorsonasal), InGl – Infracaudal gland, LO – Luminous organ, PO – Pectoral organs, Pol – Posterior organ lateral, PLO – Pectoral lateral organ, Prc – Precaudal organs (precaudals), PVO – Pectoral ventral organs, Sao – Supraanal organs, So – Suborbital, Gl – Supracaudal gland, VLO – Ventral lateral organ, Vn – Ventral nasal (ventronasal), VO – Ventral organs.

Poulsen et al. BMC Evolutionary Biology 2013 13:111   doi:10.1186/1471-2148-13-111
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