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Hexapodidae

Malacostraca - Decapoda - Hexapodidae

Synonymy list
YearName and author
1886Hexapodidae Miers
1995Hexapodidae Feldmann et al. p. 15
2000Hexapodidae Schweitzer et al. p. 55
2001Hexapodidae Schweitzer and Feldmann p. 331
2002Hexapodidae Schweitzer and Feldmann p. 961
2005Hexapodidae Schweitzer p. 289
2006Hexapodidae Karasawa and Schweitzer p. 58
2010Hexapodidae Schweitzer et al. p. 135
2017Hexapodidae Luque et al. p. 24

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
Deuteropoda
Mandibulata
PancrustaceaZrzavý and Štys 1997
Hymenostraca(Rolfe 1969)
superclassMulticrustaceaRegier et al. 2010
classMalacostraca()
RankNameAuthor
subclassEumalacostracaGrobben 1892
CaridoidaHessler 1982
orderDecapoda
suborderPleocyemataBurkenroad 1963
Reptantia(Boas)
MeiuraSaint Laurent 1980
infraorderBrachyura()
Eubrachyurade Saint Laurent 1980
HeterotremataGuinot 1977
superfamilyGoneplacoideaMacLeay 1838
familyHexapodidaeMiers 1886
familyHexapodidaeMiers 1886

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Fm. Hexapodidae Miers 1886
show all | hide all
G. †Bellhexapus De Angeli et al. 2010
+
Bellhexapus granulatus De Angeli et al. 2010
G. †Eohexapus De Angeli et al. 2010
+
Eohexapus albertii De Angeli et al. 2010
Eohexapus orthogonius Beschin et al. 2012
G. †Eurohexapus De Angeli et al. 2010
+
Eurohexapus lobatus De Angeli et al. 2010
G. †Goniocypoda Woodward 1867
+
Goniocypoda audensis Secrétan 1971
Goniocypoda collinsi Crane and Quayle 1986
Goniocypoda edwardsi Woodward 1868
Goniocypoda elmorensis Crane and Quayle 1986
Goniocypoda quaylei Crane 1981
Goniocypoda rajasthanica Glaessner and Rao 1960
Goniocypoda sindensis Glaessner 1933
Goniocypoda sulcata Carter 1898
Goniocypoda tessieri Remy and Tessier 1954
Goniocypoda verheyeni Fraaije et al. 2007
G. †Hexapinus Manning and Holthuis 1981
G. †Hexaplax Doflein 1904
Subfm. †Hexapodinae Alcock
+
G. †Prepaeduma Morris and Collins 1991
G. Hexapus De Haan 1833
+
Hexapus anfractus Rathbun 1909
Hexapus decapoda Morris and Collins 1991
Hexapus estuarinus Sankarankutty 1975
Hexapus granuliformis Karasawa and Kato 2008
Hexapus nakajimai Imaizumi 1959
Hexapus pinfoldi Collins and Morris 1978
Hexapus sexpes Fabricius 1798
G. †Holthuisea Guinot et al. 2011
+
Holthuisea cesarii Beschin et al. 1994
G. †Lambdophallus Alcock 1900
+
G. †Latohexapus Huang et al. 2002
G. †Paeduma Rathbun 1897
G. †Palaeopinnixa Via 1966
+
Palaeopinnixa alontensis De Angeli et al. 2010
Palaeopinnixa eocenica Woods 1922
Palaeopinnixa granulosa Schweitzer and Feldmann 2002
Palaeopinnixa heckeri Birshtein 1956
Palaeopinnixa intermedia Collins and Morris 1976
Palaeopinnixa perornata Collins and Morris 1976
Palaeopinnixa prima Rathbun 1918
Palaeopinnixa rathbunae Schweitzer et al. 2000
Palaeopinnixa rocaensis Feldmann et al. 1995
Palaeopinnixa rotunda Schweitzer and Feldmann 2001
Pinnixa (Palaeopinnixa) nodosa Collins and Wienberg Rasmussen 1992
G. †Parahexapus Balass 1922
G. †Pseudohexapus Monod 1956
G. †Spiroplax Manning and Holthuis 1981
G. Stevea Manning and Holthuis 1981
+
Stevea cesarii Beschin et al. 1994
Stevea martini Feldmann et al. 2014
Stevea williamsi Glassell 1938
G. †Tritoplax Manning and Holthuis 1981
Diagnosis
ReferenceDiagnosis
C. E. Schweitzer and R. M. Feldmann 2001arapace rectangular, or rarely, trapezoidal; wider than long, average LAV about 0.68 with range of 0.57-0.83; lat- eral margins steep; regions typically poorly or moderately well defined. Front typically widest distally, axially sulcate, usually extending at least weakly beyond orbits, not deflexed. Orbits usu- ally rimmed, upper margin sinuous; straight frontal margin only partially occupied by orbits, except in Goniocypoda and Globih- exapus; fronto-orbital width to width ratio averaging about 0.45, range of 0.32-0.64; fronto-orbital width to posterior width ratio averaging about 0.63, range of 0.34-0.86. Anterolateral and pos- terolateral margins indistinguishable, often with rim or ridge par- allel to lateral margin; posterolateral reentrant moderately well developed; posterior margin sometimes with small reentrant axial to posterolateral comer; posterior width to maximum width ratio ranging from 0.73-0.93, except in Globihexapus (0.59) and Spi- roplax (0.61). Regions usually poorly defined. Stemite 4 with anterior projections. Stemite 8 obscured and pereiopods 5 miss- ing. Male abdominal somites exhibiting fusion, usually somites 3-5.
Measurements
No measurements are available
Composition: chitinc
Locomotion: actively mobilec
Life habit: epifaunalo
Diet: carnivoreo
Vision: well-developedc
Created: 2008-01-28 11:51:24
Modified: 2022-05-13 13:34:01
Source: o = order, c = class
References: Aberhan 1992, Turnsek 1997

Age range

Maximum range based only on fossils: base of the Danian to the top of the Calabrian or 66.00000 to 0.78100 Ma
Minimum age of oldest fossil (stem group age): 61.6 Ma

Collections (39 total)


Time interval Ma Country or state Original ID and collection number
Danian66.0 - 61.6USA (Alabama) Stevea martini (164850)
Danian66.0 - 61.6Argentina (Rio Negro) Thaumastoplax rocaensis (5162)
Danian66.0 - 61.6Greenland Pinnixa nodosa (22943)
Ypresian56.0 - 47.8France Goniocypoda audensis (226630)
Ypresian56.0 - 47.8Italy Stevea cesarii (207595)
Eocene56.0 - 33.9United Kingdom (England) Goniocypoda edwardsi (135541)
Eocene56.0 - 33.9USA (Washington) Palaeopinnixa eocenica (138984)
Early/Lower Eocene55.8 - 48.6Peru (Talara) Thaumastoplax eocenica (165441)
Early/Lower Eocene - Middle Eocene55.8 - 37.2Barbados Pinnixa perornata (185880)
Middle Eocene48.6 - 37.2USA (Washington) Palaeopinnixa rathbunae (202157)
Lutetian47.8 - 41.3Italy (Monte Bolca, Verona) Bellhexapus granulatus, Eohexapus albertii, Eurohexapus lobatus, Palaeopinnixa alontensis (127283)
Lutetian47.8 - 41.3Italy (Vicenza) Bellhexapus granulatus, Stevea cesarii (184968)
Lutetian47.8 - 41.3USA (California) Palaeopinnixa granulosa (200664)
Lutetian47.8 - 41.3Italy Eohexapus orthogonius (207553) Stevea cesarii (176657)
Lutetian - Priabonian47.8 - 33.9Egypt Goniocypoda transsilvanica (232605)
Bartonian41.3 - 38.0USA (Oregon) Palaeopinnixa rotundus (202318)
Bartonian41.3 - 38.0Pakistan (Northwest Frontier) Hexapus pinfoldi (202287)
Bartonian - Priabonian41.3 - 33.9United Kingdom (England) Goniocypoda edwardsi (140451)
Priabonian38.0 - 33.9Netherlands Goniocypoda verheyeni (207746)
Priabonian38.0 - 33.9Italy Bellhexapus granulatus (226756) Bellhexapus granulatus, Palaeopinnixa alontensis (226744) Palaeopinnixa sp. (134950)
Aquitanian23.03 - 20.44Panama Thaumastoplax prima (42624)
Aquitanian23.03 - 20.44Mexico (Chiapas) Palaeopinnixa perornata (133885)
Early/Lower Miocene23.03 - 15.97Japan (Aichi) Hexapinus sp. (219250)
Early/Lower Miocene23.03 - 15.97Venezuela (Lara) Palaeopinnixa perornata (46384)
Early/Lower Miocene23.03 - 15.97Colombia (Atlantico) Palaeopinnixa perornata (228494)
Burdigalian20.44 - 15.97Japan Hexapus nakajimai (169411)
Burdigalian20.44 - 15.97Japan (Gifu) Paeduma sp. (46950)
Burdigalian20.44 - 15.97Venezuela (Falcon) Palaeopinnixa perornata (228725)
Middle Miocene15.97 - 11.608Trinidad and Tobago Thaumastoplax prima (74919)
Serravallian13.82 - 11.62Trinidad and Tobago Thaumastoplax intermedia (171482)
Serravallian - Tortonian13.82 - 7.246Malaysia (Sarawak) Hexapus decapodus (175181)
Tortonian11.62 - 7.246Malaysia (Sabah) Hexapus decapodus (185833)
Late/Upper Miocene11.608 - 5.333Brunei Darussalam Prepaeduma decapoda (173581 173590 173591)
Gelasian - Calabrian2.588 - 0.781Philippines (Mindanao) Hexapus granuliformis (224586)