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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
2007Isotelinae Loch p. 22

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
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.

Subfm. †Isotelinae Angelin 1854
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G. †Golasaphus Shergold 1971
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†Golasaphus momedahensis Shergold 1971
G. †Hoekaspis Kobayashi 1937
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†Hoekaspis schlagintweiti Harrington and Leanza 1942
G. †Isoteloides Raymond 1910
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†Isoteloides canalis Whitfield 1886
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Invalid names: Isoteloides latimarginatus Fortey 1979 [synonym], Isoteloides whitfieldi Raymond 1910 [synonym]
†Isoteloides flexus Hintze 1953
†Isoteloides peri Fortey 1979
†Isoteloides polaris Poulsen 1927
G. †Isotelus Dekay 1824
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†Isotelus aktchokensis Weber 1948
†Isotelus bradleyi Amati 2014
†Isotelus copenhagenensis Ross and Shaw 1972
†Isotelus frognoensis Owen 1981
†Isotelus giganteus Raymond 1931
†Isotelus gigas Dekay 1824
†Isotelus harrisi Raymond 1905
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Invalid names: Isotelus platymarginatus Raymond 1910 [synonym]
†Isotelus iowensis Owen 1852
†Isotelus kimmswickensis Bradley 1930
†Isotelus maximus Locke 1838
†Isotelus megistos Locke 1842
†Isotelus parvirugosus Chatterton and Ludvigsen 1976
†Isotelus platyrhachis Steinhardt 1874
†Isotelus rejuvenis Raymond 1920
†Isotelus rex Rudkin et al. 2003
†Isotelus simplex Raymond and Narraway 1910
†Isotelus skapaneidos Amati 2014
†Isotelus susae Whitfield 1882
†Isotelus violaensis Amati 2014
†Isotelus walcotti Walcott 1918
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Invalid names: Isotelus planus De Mott 1963 [synonym]
Invalid names: Homotelus Raymond 1920 [synonym]
G. †Megalaspides Brögger 1886
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†Megalaspides striatellus Fortey 1975
Invalid names: Lannacus Tjernvik 1956 [synonym]
G. †Megistaspis Jaanusson 1956
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Subg. †Megistaspis (Ekeraspis) Tjernvik 1956
+
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Invalid names: Megistaspis (Ekeraspis) albertensis Walcott 1925 [synonym]
Subg. †Megistaspis (Megistaspis) Jaanusson 1956
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†Megistaspis (Megistaspis) simon Tjernvik and Johansson 1980
Subg. †Megistaspis (Paramegistaspis) Balashova 1976
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Invalid names: Megistaspis (Varvaspis) Tjernvik and Johansson 1980 [objective synonym]
Subg. †Megistaspis (Rhinoferus) Balashova 1976
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†Megistaspis limbatus Boeck 1838
Invalid names: Megalaspis Angelin 1851 [replaced]
G. †Notopeltis Harrington and Leanza 1957
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†Notopeltis orthometopa Harrington 1938
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Invalid names: Megalaspidella pumila Harrington 1938 [synonym]
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: carnivorec
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: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004

Age range: base of the Tremadoc to the top of the Telychian or 486.50000 to 433.40000 Ma

Collections (1536 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Franconian - Trempealeauan497.0 - 485.4Australia (Queensland) Golasaphus momedahensis (198276 198277 198278 198279 198280 198282 198283 198284)
Skullrockian - Tulean487.5 - 474.9Canada (Newfoundland) Isoteloides peri (195781)
Ibexian487.5 - 470.0USA (Nevada) Isoteloides sp., Megistaspis sp. (104536) Isotelus sp. (104308)
Tremadoc486.5 - 477.7Canada (Alberta) Isoteloides saxosimontis (10908 10909 10910 10911 10917 10922 10925 10927) Megistaspis sp. (10951)
Tremadoc486.5 - 477.7Bolivia Notopeltis sp. (8841)
Tremadoc486.5 - 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)
Tremadoc486.5 - 477.7Colombia Megalaspis sp. (8864)
Tremadoc486.5 - 477.7Argentina Notopeltis orthometopa (66189 159890) Notopeltis sp. (8898)
Tremadoc486.5 - 477.7China (ShanXi) Isoteloides sp. (8000)
Tremadoc486.5 - 477.7France (Montagne Noire) Ekeraspis sp. (20819)

Youngest occurrences
Time interval Ma Country or state PBDB collection number
Richmondian - Ashgill449.6 - 443.7USA (Ohio) Isotelus sp. (392 393 394)
Ashgill - Richmondian449.5 - 445.5Canada (Ontario) Isotelus maximus (26303)
Pusgillian - Rawtheyan449.5 - 445.2Norway (Ringerike) Isotelus sp., Isotelus frognoensis (163026)
Ashgill449.5 - 443.7USA (Indiana) Isotelus gigas, Isotelus maximus (64224 64225 64230 64232)
Ashgill449.5 - 443.7Canada (Quebec) Isotelus sp. b (13131)
Ashgill449.5 - 443.7USA (Nevada) Isotelus sp. (359)
Ashgill449.5 - 443.7USA (Kentucky) Isotelus maximus (24034)
Bolindian449.5 - 443.7Australia (Tasmania) Isotelinae indet. (229055)
Hirnantian445.2 - 443.4United Kingdom (Scotland) Isotelus sp. (181875 181876)
Aeronian - Telychian440.8 - 433.4USA (Georgia) Isotelus brachycephalus (164677)