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Digonus

Trilobita - Phacopida - Homalonotidae

Taxonomy
Digonus was named by Guerich (1909) [Sepkoski's age data: D Gedi-l D Emsi-u Sepkoski's reference number: 902,1106]. It is not extant.

It was reranked as Homalonotus (Digonus) by Pillet (1961); it was reranked as Burmeisteria (Digonus) by Berry and Boucot (1973).

It was assigned to Homalonotus by Pillet (1961); to Burmeisteria by Berry and Boucot (1973); to Phacopida by Sepkoski (2002); to Homalonotidae by Jell and Adrain (2002); and to Homalonotinae by Thomas (1977) and Bault et al. (2021).

Synonymy list
YearName and author
1909Digonus Guerich
1961Homalonotus (Digonus) Pillet
1973Burmeisteria (Digonus) Berry and Boucot
1977Digonus Thomas p. 168
2002Digonus Jell and Adrain p. 366
2002Digonus Sepkoski
2021Digonus Bault et al. pp. Appendix 7

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderCalymeninaSwinnerton 1915
familyHomalonotidaeChapman 1890
subfamilyHomalonotinae(Chapman 1890)
genusDigonusGuerich 1909

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.

G. †Digonus Guerich 1909
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†Digonus comes Chlupac 1981
†Digonus roemeri de Koninck 1876
†Digonus zemmourensis Pillet 1961
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-11 19:54:32
Modified: 2009-12-16 01:06:20
Source: f = family, c = class
References: Hendy 2009, Aberhan et al. 2004

Age range: base of the Gedinnine to the top of the Late/Upper Emsian or 416.00000 to 391.90000 Ma

Collections (30 total)


Time interval Ma Country or state Original ID and collection number
Pridoli - Helderbergian423.0 - 393.3Algeria Homalonotus roemeri (27210)
Lochkovian419.2 - 410.8Morocco D. sp. A (13938) D. sp., D. zemmourensis (13936) Homalonotus roemeri (27386 27467)
Lochkovian419.2 - 410.8Bolivia (La Paz) Burmeisteria noticus (37052)
Lochkovian419.2 - 410.8Algeria D. rudesdorfensis, Burmeisteria zemmourensis, Homalonotus roemeri (27473) Homalonotus roemeri (27171 27183)
Lochkovian419.2 - 410.8Ukraine Homalonotus roemeri (23362)
Early/Lower Devonian419.2 - 393.3Antarctica Burmeisteria antarcticus (35561 35563 35564 35565)
Gedinnine416.0 - 412.3Spain D. roemeri (234795)
Gedinnine416.0 - 412.3Spain (León) D. roemeri (234796)
Pragian410.8 - 407.6Czech Republic (Moravia) D. comes (25092)
Pragian410.8 - 407.6Poland D. elegans (146009) D. sp. (145999)
Pragian410.8 - 407.6Algeria Homalonotus roemeri (27172)
Emsian407.6 - 393.3New Zealand Burmeisteria expansus (40522 40525)
Emsian407.6 - 393.3South Africa Burmeisteria notica (35578 35581 35584)
Emsian - Eifelian407.6 - 387.7Ghana Burmeisteria accraensis (35605)
Late/Upper Emsian402.5 - 391.9Luxembourg D. intermedius (232220 232281 233203)
Eifelian393.3 - 387.7South Africa Burmeisteria notica (35593)