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Chactoidea

Arachnida - Scorpiones

Taxonomy
Chactoidea was named by Pocock (1893). It is extant.

It was assigned to Orthosternina by Dunlop et al. (2013).

Synonymy list
YearName and author
1893Chactoidea Pocock
2013Chactoidea Dunlop et al. p. 38

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
—Deuteropoda
subphylumChelicerataHeymons 1901
—EuchelicerataWeygoldt and Paulus 1979
RankNameAuthor
—Prosomapoda
—Planaterga
—Dekatriata
—SclerophorataKamenz et al. 2011
classArachnidaLamarck 1801
—Stomothecata
orderScorpionesLatreille 1817
suborderOrthosternina()
superfamilyChactoideaPocock 1893
superfamilyChactoideaPocock 1893

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.

Superfm. Chactoidea Pocock 1893
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Fm. Chactidae Pocock 1893
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G. †Araripescorpius Campos 1986
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†Araripescorpius ligabuei Campos 1986
G. Chactas Gervais 1844
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†Chactas pleistocenicus Lourenço and Weitschat 2005
Fm. Euscorpiidae Laurie 1896
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G. †Eoeuscorpius Kühl and Lourenço 2017
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†Eoeuscorpius ceratoi Kühl and Lourenço 2017
Fm. Hemiscorpiidae Pocock 1893
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Invalid names: Hormuriinae Laurie 1896 [empty]
Fm. †Palaeoeuscorpiidae Lourenço 2003
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Subfm. †Archaeoscorpiopinae Lourenço 2015
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G. †Archaeoscorpiops Lourenço 2015
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†Archaeoscorpiops cretacicus Lourenço 2015
G. †Burmesescorpiops Lourenço 2016
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†Burmesescorpiops groehni Lourenço 2016
G. †Palaeoeuscorpius Lourenço 2003
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†Palaeoeuscorpius gallicus Lourenço 2003
Fm. †Protochactidae Lourenço et al. 2022
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G. †Protochactas Lourenço et al. 2022
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†Protochactas furreri Lourenço et al. 2022
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: chitinc
Grouping: solitaryc
Environment: terrestrialc
Locomotion: actively mobilec
Created: 2017-04-17 09:55:58
Modified: 2017-04-17 09:55:58
Source: c = class
Reference: Bush and Bambach 2015

Age range

Maximum range based only on fossils: base of the Fassanian to the top of the Holocene or 242.00000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 235.0 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Fassanian242.0 - 235.0Switzerland Protochactas furreri (230229)
Late/Upper Aptian122.46 - 113.0Brazil (Ceará) Araripescorpius ligabuei (122557 122922 124526)
Late/Upper Albian105.3 - 99.6France (Poitou-Charentes) Palaeoeuscorpius gallicus (99114)
Early/Lower Cenomanian99.6 - 93.5Myanmar Archaeoscorpiops cretacicus (144466) Burmesescorpiops groehni (172900)
Ypresian56.0 - 47.8Italy Eoeuscorpius ceratoi (188969)
Holocene0.0117 - 0.0Colombia (Santander) Chactas pleistocenicus (155980)