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Trimerus

Trilobita - Phacopida - Homalonotidae

Taxonomy
Trimerus was named by Green (1832) [Sepkoski's age data: S Ldov-u D Emsi-u Sepkoski's reference number: 1106].

It was assigned to Phacopida by Sepkoski (2002); to Homalonotidae by Jell and Adrain (2002); and to Homalonotinae by Thomas (1977) and Congreve and Lieberman (2008).

Synonymy list
YearName and author
1832Trimerus Green
1977Trimerus Thomas p. 168
2002Trimerus Jell and Adrain p. 455
2002Trimerus Sepkoski
2008Trimerus Congreve and Lieberman p. 27

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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)
genusTrimerusGreen 1832

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. †Trimerus Green 1832
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 100 to < 1000g
Adult width: 10 to < 100g
Adult height: 10 to < 100g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: well-developedf
Comments: No data availableg
Created: 2009-06-09 12:41:07
Modified: 2009-06-09 14:41:07
Source: g = genus, f = family, c = class
References: Aberhan et al. 2004, Hendy 2009, Harrington et al. 1959

Age range: base of the Aeronian to the top of the Frasnian or 440.80000 to 372.20000 Ma

Collections (70 total)


Time interval Ma Country or state Original ID and collection number
Silurian443.8 - 419.2Bolivia T. linares (25083)
Llandovery443.4 - 433.4USA (New York) T. sp. (459)
Llandovery - Ludlow443.4 - 423.0USA (Maryland) T. delphinocephalus (41093 41101 41129)
Llandovery - Ludlow443.4 - 423.0USA (West Virginia) T. delphinocephalus (40726)
Aeronian440.8 - 438.5United Kingdom (Wales) T. sp. (50156)
Telychian438.5 - 433.4Australia (Tasmania) T. sp. (40017)
Telychian - Sheinwoodian438.5 - 430.5Paraguay T. sp. (25566 25568)
Telychian - Sheinwoodian438.5 - 430.5Argentina T. flexuosus, T. grandis (25103)
Sheinwoodian433.4 - 430.5USA (New York) T. delphinocephalus (26863 26864)
Sheinwoodian433.4 - 430.5United Kingdom (England) T. sp. (23094)
Wenlock433.4 - 427.4USA (Indiana) T. delphinocephalus (26787) T. sp. (24940)
Wenlock433.4 - 427.4USA (Tennessee) T. delphinocephalus (26788)
Wenlock433.4 - 427.4USA (New York) T. delphinocephalus (12932 12934 12935 12936 13051 13052 13053 13072 24941 26854) T. sp. (469 470 472 474 530 536 541)
Wenlock433.4 - 427.4Canada (Ontario) T. delphinocephalus (26687 26855)
Wenlock - Ludlow433.4 - 423.0Argentina T. grandis, T. flexuosus (25062) T. sp. (25060)
Wenlock - Pridoli433.4 - 419.2Argentina T. kayseri (25058 25105)
Ludlow427.4 - 423.0Morocco T. sp. A (27030)
Ludlow427.4 - 423.0Argentina T. kayseri (25056 25571)
Pridoli423.0 - 419.2Argentina T. kayseri (25057)
Pridoli - Lochkovian423.0 - 410.8Australia (Victoria) T. sp. (646)
Pridoli - Helderbergian423.0 - 393.3Argentina T. kayseri (25055)
Lochkovian419.2 - 410.8Bolivia T. sp. (25579)
Lochkovian419.2 - 410.8Australia (Victoria) T. sp. (8416 8484 8488)
Lochkovian419.2 - 410.8Australia (Tasmania) T. sp. (116428)
Early/Lower Devonian419.2 - 393.3Australia (Victoria) T. sp. (8349 8350 8362)
Pragian410.8 - 407.6Poland T. novus (146009)
Pragian410.8 - 407.6Morocco T. sp. A (27062)
Pragian410.8 - 407.6Australia (Victoria) T. sp. (8498 8501 8507)
Pragian - Emsian410.8 - 393.3Turkey (Istanbul) T. fornix (32470)
Early/Lower Emsian409.1 - 402.5Spain (León) T. sp. (235101)
Emsian407.6 - 393.3France (Alsace) T. sp. (40505)
Eifelian393.3 - 387.7Brazil (Para) T. sp. (37137)
Givetian387.7 - 382.7Spain (Aragon) T. lanvoiensis (40446)
Givetian387.7 - 382.7USA (Pennsylvania) T. dekayi (9661 9674) T. sp. (627 669 670)
Frasnian382.7 - 372.2South Africa (Eastern Cape) T. sp. (77958)