Hesslandona sp., from Dong et al. (2005).

Belongs within: Euarthropoda.
Contains: Allotriocarida, Tantulocarida, Remipedia, Thecostraca, Copepoda, Malacostraca, Mystacocarida, Argulidae, Pentastomida, Ostracoda.

The clade Pancrustacea includes the modern crustaceans and insects, with the latter a derived subgroup of the former (Regier et al. 2010). This grouping is primarily supported by molecular data; the synapomorphies given below have all become modified in various subclades. Relationships between clades within the Pancrustacea remain debated; nevertheless, certain relationships have been supported by recent molecular analyses. The clade Oligostraca unites the bivalved Ostracoda with a clade of parasites of vertebrates in the Ichthyostraca; Schwenter et al. (2017) recently also included the Mystacocarida in the Oligostraca. The Phosphatocopina, a group of ostracod-like animals known from the Upper Cambrian, may also belong within the Oligostraca, but some authors have argued for their placement outside the crustacean crown group. Withing the sister-clade of the Oligostraca, the molecularly supported Altocrustacea, a relationships between the Tantulocarida and Thecostraca has been suggested on the basis of gonopore position in the two groups; tantulocarids and basal thecostracans are also both sessile parasites.

Synapomorphies (from Zhang et al. 2007, for Crustacea and Labrophora): Five limb-bearing head segments; labrum present; paragnaths present; basipod of post-antennular limbs with a movable, seta-bearing endite (the proximal endite); second and third head limbs modified in having a multi-annulated exopod with inward-pointing setae; proximal endite of second limb and third limb (mandible) enlarged to each form a coxa.

Pancrustacea (see below for synonymy)
    |--Altocrustacea RS10
    |    |--Allotriocarida SC17
    |    `--Multicrustacea [Communostraca, Vericrustacea] SC17
    |         |  i. s.: Arenosicaris inflata SC17
    |         |--+--Tantulocarida LS02
    |         |  `--Thecostraca SC17
    |         `--+--Copepoda SC17
    |            `--Malacostraca SC17
    `--Oligostraca RS10
         |--Mystacocarida SC17
         |--Ichthyostraca LSE13
         |    |--Argulidae AC17
         |    `--Pentastomida RS10
         `--+--Ostracoda AC17
            `--Phosphatocopina [Phosphatocopida] AC17
                 |--Klausmuelleria LSE13
                 `--+--Vestrogothia LSE13
                    `--Hesslandona LSE13

Pancrustacea incertae sedis:
  Imocaris tuberculata Schram & Mapes 1984 GT01
  Nippotantulus heteroxenus Huys, Ohtsuka & Boxshall 1994 MA01
  Branchipodites vectensis S02
  Neomysis M02
    |--N. americana M02
    `--N. vulgaris CS77
  Perosquilla armata K-MC02
    |--P. a. armata K-MC02
    `--P. a. capensis K-MC02
  Mesosoma Otto 1821 C92
  Mixodiaptomus laciniatus D51
  Pleuroncodes planipes CH97
  Phalangites priscus Münster 1836 D07
  Cryptophthalmus Rafinesque 1814 BR05
  Cymodocea Rafinesque 1814 BR05
  ‘Cymodocea’ Leach 1818 nec Rafinesque 1814 nec Lamouroux 1816 BR05
  ‘Dactylopus’ Claus 1862 non Gill 1859 BR05
  Donovania Leach 1814 BR05
  Orientalina Kolosnitsyna 1973 BR05
  Pagodina van Beneden 1853 BR05
  Trichia de Haan 1839 BR05
  ‘Typhis’ Risso 1816 non Montfort 1810 [Typhidae] BR05
  Venilia Rafinesque 1815 BR05
  Fenneropenaeus chinensis DH08
  Limnadella kitei Girard 1854 DS89
  Anatanais robusto BBB-S95
  Anthonema Walther 1904 H75
    `--*A. problematica Walther 1904 H75
  ‘Acherusia’ Lucas 1846 non Laporte & Gory 1837 E12
    `--A. dumerilii Lucas 1846 E12
  Naesea edwardsii Lucas 1846 E12
  Ovalia Latreille in Griffith & Pidgeon 1833 KA-Z11
  Mappates plataxus Rangnekar 1958 S69
  Cycloidea FGS04
    |--Cyclus de Koninck 1841 [incl. Paraprosopon Gemmellaro 1890] FGS04
    `--Oonocarcinus Gemmellaro 1890 FGS04
  Orstenocarida MD01
  Priscansermarinus EL11
  Heymonsicambria EL11
  Macleayia Haswell 1830 HW92
  Pseudalibrotus littoralis CS77
  Hymenodora glacialis CS77
  Ozolus Latreille 1802 L02a
    `--*O. gasterostei Latreille 1802 L02b (see below for synonymy)
  Amymone L02b
    |--A. baccha [=Monoculus bacchus] L02b
    |--A. faunus [=A. fauna, Monoculus faunus] L02b
    |--A. moenas L02b
    |--A. satyrus [=A. satyra, Monoculus satyrus] L02b
    |--A. silene [=A. silenus, Monoculus silenus] L02b
    `--A. thyas L02b
  Nauplius L02b
    |--N. bracteatus [=Monoculus bracteatus] L02b
    `--N. saltatorius [=Monoculus saltatorius] L02b
  Microdentopus gryllotalpa PP64
  Aristeomorpha foliacea PP64
  Ligur ensiferus PP64
  Paromola cuvieri PP64
  Anamathia rissoana PP64
  Ergasticus clouei PP64
  Dorynchus thompsoni PP64
  Cymopolia caroni PP64

*Ozolus gasterostei Latreille 1802 L02b [incl. Argulus delphini L02b, Monoculus delphinus L02a, M. gyrini L02b]

Pancrustacea [Archoptera, Copepodoida, Crustacea, Crustaceanomorpha, Entomostraca, Eucrustacea, Gymnota, Maxillopoda, Pneumonura, Pseudopoda, Tetraconata]

*Type species of generic name indicated


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Last updated: 5 November 2017.

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