upper lip

See: labrum [Martin, 2005].

See: labrum [McLaughlin, 1980].

(Order Cladocera):

Labrum [Stachowitsch, 1992].

(Order Diplostraca):

Labrum [Stachowitsch, 1992].

(Order Cumacea):

Labrum [Stachowitsch, 1992].

(Order Decapoda):

Labrum [Stachowitsch, 1992].

(Order Amphipoda):

Labrum [Stachowitsch, 1992].

(Order Isopoda):

Labrum [Stachowitsch, 1992].

(Order Mysida):

Labrum [Stachowitsch, 1992].

(Order Stomatopoda):

Labrum [Stachowitsch, 1992].

(Order Leptostraca):

Labrum [Stachowitsch, 1992].

(Subclass Branchiura):

Labrum [Stachowitsch, 1992].

(Subclass Cirripedia):

Labrum [Stachowitsch, 1992].

(Subclass Mystacocarida):

Labrum [Stachowitsch, 1992].

(Class Ostracoda):

Labrum [Stachowitsch, 1992].

(Order Thermosbaenacea):

Labrum [Stachowitsch, 1992].