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Isotelinae

Trilobita - Asaphida - Asaphidae

Synonymy list
YearName and author
1854Isotelinae Angelin
1959Isotelinae Harrington et al. p. 339
1974Isotelinae Neuman and Bruton
1981Isotelinae Owen
1999Isotelinae Hoel

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAsaphidaSalter 1864
superfamilyAsaphoideaSalter 1864
familyAsaphidaeBurmeister 1843
subfamilyIsotelinaeAngelin 1854
subfamilyIsotelinaeAngelin 1854

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.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesf
Adult length: 10 to < 100f
Adult width: 10 to < 100f
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: deposit feedero
Vision: well-developedf
Created: 2009-06-11 14:38:06
Modified: 2009-12-14 00:45:08
Source: f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy 2009, Hendy et al. 2009

Age range: base of the Ibexian to the top of the Telychian or 488.30000 to 433.40000 Ma

Collections (1500 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Franconian - Trempealeauan501.0 - 485.4Australia (Queensland) Golasaphus momedahensis (198276 198277 198278 198279 198280 198282 198283 198284)
Ibexian488.3 - 471.8USA (Nevada) Isoteloides sp., Megistaspis sp. (104536) Isotelus sp. (104308)
Stairsian485.4 - 478.6USA (Nevada) Megistaspis nevadensis (104502)
Gasconadian485.4 - 477.7USA (New York) Asaphus canalis (119377)
Tremadoc485.4 - 477.7Argentina (Salta) Megalaspis saltaensis (115716) Notopeltis orthometopa (115704 115705 115706 115818 115982 115983 115993 115997 115998 116027 116054 116055 116067 116068 116069 116070 116072 116073 116075 116079 116080 116082 116083 116084 116085 116087)
Tremadoc485.4 - 477.7Canada (Alberta) Isoteloides saxosimontis (10908 10909 10910 10911 10917 10922 10925 10927) Megistaspis sp. (10951)
Tremadoc485.4 - 477.7Argentina Notopeltis orthometopa (66189 159890) Notopeltis sp. (8898)
Tremadoc485.4 - 477.7Colombia Megalaspis sp. (8864)
Tremadoc485.4 - 477.7Argentina (Jujuy) Megalaspis sp. (8882) Notopeltis orthometopa (9040 115656 115662 115663 115671 115673 115674) Notopeltis orthometopoa (115672)
Tremadoc485.4 - 477.7China (ShanXi) Isoteloides sp. (8000)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Richmondian449.5 - 443.7USA (Michigan) Isotelus gigas (26311) Isotelus iowaensis (353) Isotelus sp. (26313)
Richmondian449.5 - 443.7USA (Tennessee) Isotelus sp. (1927 1968)
Richmondian449.5 - 443.7USA (Indiana) Isotelus maximus (399 64170) Isotelus sp. (371 374 72429 72433 72434 72436 72437 72440 72444 72445 72447 72448 72454 72470 72471 72473 72474 72475 72481 72482 72484 72489 72490 72491 72500 72501 72507 72508 72509 72510 72512 72513 72514 72516 72519 72521 72522 72523 72524 72525 72526 72527 72528 72529 72533 72538 72539 72938 72942 73087 73089 73092 73093 73094 73095 73096 73098 73099 73100 73101 76913)
Richmondian449.5 - 443.7USA (Minnesota) Isotelus gigas (358)
Richmondian449.5 - 443.7Canada (Ontario) Isotelus gigas (173013 173091 173117 173136 173251)
Richmondian449.5 - 443.7USA (Kentucky) Isotelus maximus (37833) Isotelus sp. (72689 72693 72720 72852 72853 72854 72855 72856 72857 72858 72859 72860 72861 72862 73049 73050 73053 73054 73055 73057 73059 73062 73063 73064 73107 73110 73114 73115 73116 73117)
Richmondian449.5 - 443.7USA (Illinois) Isotelus sp. (26684)
Richmondian - Ashgill449.5 - 443.7USA (Ohio) Isotelus sp. (393 394)
Hirnantian445.2 - 443.4United Kingdom (Scotland) Isotelus sp. (181875 181876)
Aeronian - Telychian440.8 - 433.4USA (Georgia) Isotelus brachycephalus (164677)