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Head

See: Cephalon [Martin, 2005]
(Taxon-specific: ) Anterior of two divisions (tagmata) of body (head, trunk); Consists of five somites bearing antennules, antennae, mandibles, maxillules, and (reduced) maxillae. Bears compound and naupliar eyes and may be covered by a head shield. Not enclosed by carapace. (Clearly delimited/not clearly delimited; helmeted, rounded, with/without rostrum).
(syn. cephalon) [Stachowitsch, 1992]
Anterior of three divisions (tagmata) of body (head, thorax, abdomen). Consists of five somites bearing in part poorly developed antennules, antennae, mandibles, maxillules, and maxillae. Covered, along with thorax, by carapace; border between head and thorax indicated by cervical groove. [Stachowitsch, 1992]
Anterior of two divisions (tagmata) of body (head, trunk). Consists of five somites bearing antennules, antennae, mandibles, maxillules, and maxillae. Bears ventral rostrum, compound and nauplius eyes, and is typically entirely enclosed by carapace. (entirely/not entirely enclosed by carapace; with/without frontal appendage).
(syn. cephalon) [Stachowitsch, 1992]
(Taxon-specific: Family Pycnogonidae) Anterior of three divisions (tagmata) of bosy (head, thorax, abdomen). Consists of five somites bearing antennules, antennae, mandibles, maxillules, and maxillae. Also bears pair of compound eyes laterally and nauplius eye middorsally; superfically subdivided dorsally by transverse mandibular groove.
(syn. cephalon) [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Anterior of three basic divisions (tagmata) of body (head, thorax, abdomen). Consists of five somites with five pairs of appendages (antennules, antennae, mandibles, maxillules, maxillae); fused with first thoracic somite (bearing maxillipeds), this entire complex also being termed head. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Anterior of three basic divisions (tagmata) of body (head, thorax, abdomen). Fused with anterior thoracic segments (thoracomeres) to form cephalothorax; covered by carapace. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
(Taxon-specific: Class Secernentea) Cephalon. [Stachowitsch, 1992]
(Taxon-specific: Order Monhysterida) Cephalon. [Stachowitsch, 1992]
(Taxon-specific: Order Rhabditida) Anterior of typically two basic divisions (tagmata) of body (head, thorax; in ascothoracican: head, thorax, abdomen). If fully consists of five fused segments (somites) bearing antennules, antennae, mandibles, maxillules, and maxillae. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Anterior of two major regions (head, thorax) of body; unsegmented and not clearly delimited from thorax. Bears five pairs of appendages (cephalic appendages), including antennules, antennae, mandibles, maxillules, and maxillae as well as eye. Entirely enclosed in carapace.
(syn. cephalon) [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Anterior of three major divisions (tagmata) of body (head, thorax, abdomen). Consists of basically five somites (bearing antennules, antennae, mandibles, maxillules, and maxillae), although in anaspidacean and stygocaridacean first thoracic somite (bearing maxillipeds) is fused to head. (See also cervical groove, rostrum).
(syn. cephalon) [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]
Cephalon. [Stachowitsch, 1992]