subphylum mandibulata 1 class crustacea. subphylum mandibulata 2 all members of this group bear...

Subphylum MandibulataClass Crustacea

Subphylum Mandibulata

Subphylum MandibulataAll members of this group bear mandibles on the third head segment that are modified for feedingTaxonomic SummaryPhylum ArthropodaSubphylum MandibulataClass Myriapoda Class InsectaClass Crustacea


Class CrustaceaDefining Characteristics

Crustacean Characteristics


Crustacean Segments & AppendagesThe crustacean head consists of 5 segments fused tightly together These segments bear five paired appendages2 pairs of antennae1 pair of mandibles 2 pairs of maxillae


Crustacean Segments & AppendagesFollowing segment is the thorax, which can have a variable amount of appendagesThe abdomen may or may not have appendages


Taxonomic SummaryClass CrustaceaSubclass CirripediaSubclass CopepodaSubclass MalacostracaOrder StomatopodaOrder Euphausiacea Order IsopodaOrder AmphipodaOrder Decapoda


Subclass CirripediaDefining CharacteristicsAll species are highly modified for attachment to hard substratesThoracic limbs are modified as filtering cirri


Havent I Seen You BeforeThought to be molluscs by early naturalistsPossess a shell that is secreted by mantle tissue What makes barnacles members of the phylum Arthropoda?


Barnacle AnatomyHave a reduced head and 6 segmented thoraxThorax - six pairs of feather like appendages which are used for suspension feeding


Is that a roll of quarters, or are you just happy to see me?


Subclass CopepodaDefining CharacteristicsLoss of abdominal appendagesAbundant in the plankton and benthic communities; but due to small size escape noticeHarpacticoid


Cows of the Sea


Subclass MalacostracaDefining CharacteristicsThe head has 5 fused segments, thoracic with 8 segments, abdomen with 6-7 segments plus a telson

Appendages on the 6th abdominal segment are flattened to form uropodsContains nearly 75% of all crustaceans


Malacostraca Characteristics


Order Stomatopoda


Order Euphausiacea Krill, a small group of only 85 speciesHave 8 pairs of walking feet instead of 5 like most decapods


Order Isopoda


Order Amphipoda
