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Megistaspis

Artiopoda - Asaphida - Asaphidae

Taxonomy
Megistaspis was named by Jaanusson (1956) [Sepkoski's age data: O Trem-u O Llvi replacement name for Megalaspis ]. Its type is Trilobites limbatus.

It was assigned to Isotelinae by Hoel (1999); to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).

Synonyms
Synonymy list
YearName and author
1851Megalaspis Angelin
1854Megalaspis rudis Angelin figs. PI. XVII fig. 5 ·
1956Megistaspis Jaanusson
1957Megalaspis Harrington and Leanza
1999Megistaspis Hoel
2002Megistaspis Jell and Adrain p. 404
2002Megalaspis Sepkoski
2002Megistaspis Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
superfamilyAsaphoideaSalter 1864
familyAsaphidaeBurmeister 1843
subfamilyIsotelinaeAngelin 1854
genusMegistaspisJaanusson 1956

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. †Megistaspis Jaanusson 1956
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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]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Spines: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: carnivorec
Vision: well-developedf
Comments: BODY SIZE: Data from Harrington et al. (1959).g
Created: 2009-06-08 11:56:30
Modified: 2009-06-08 13:56:30
Source: g = genus, f = family, o = order, c = class
References: Aberhan et al. 2004, Hendy 2009, Hendy et al. 2009

Age range: base of the Dawan to the top of the Whiterockian or 478.80000 to 457.30000 Ma

Collections (201 total)


Time interval Ma Country or state Original ID and collection number
Ibexian488.9 - 471.3USA (Nevada) M. sp. (104536)
Tremadocian - Floian486.85 - 471.3Norway (Oslo-Asker) M. planilimbata (190979 190992)
Tremadocian - Floian486.85 - 471.3Norway (Modum) M. planilimbata (190985) M. sp., M. planilimbata (190923)
Tremadocian - Floian486.85 - 471.3Norway (Eiker-Sandsvær) M. planilimbata (190883 190885 190978 190984) M. sp., M. planilimbata (190880)
Tremadocian - Floian486.85 - 471.3Norway (Hedmark) M. norvegica (190977)
Tremadocian - Floian486.85 - 471.3Norway M. planilimbata (190982)
Tremadocian - Floian486.85 - 471.3Sweden M. sp. (3195)
Tremadocian - Floian486.85 - 471.3Sweden (Västergötland) M. planilimbata (190976)
Tremadoc486.4 - 477.1Argentina (Jujuy) Megalaspis sp. (8882)
Tremadoc486.4 - 477.1Argentina (Salta) Megalaspis saltaensis (115716)
Tremadoc486.4 - 477.1Colombia Megalaspis sp. (8864)
Lancefieldian484.3 - 474.9Australia (Tasmania) M. sp. (2671)
Lancefieldian484.3 - 474.9Norway (Ringsaker) M. sp. (190983)
Hunneberg482.9 - 475.6Sweden Plesiomegalaspis planilimbata (3194)
Hunneberg - Volkhov482.9 - 469.1Russian Federation (Moscow oblast) M. limbata (235824)
Tulean481.7 - 475.3USA (Nevada) M. sp. (291 104539 104540 104541 104542)
Tulean481.7 - 475.3USA (Montana) M. sp. (287)
Dawan478.8 - 466.6China (AnHui) M. sp. (7863)
Floian477.1 - 471.3France (Montagne Noire) Megalaspis goniopleurae, M. sp. (20827) Megalaspis sp. (20820)
Floian - Dapingian477.1 - 469.4Norway (Eiker-Sandsvær) M. hyorrhina (191045)
Arenig477.1 - 468.0Sweden M. sp. (3196 3197 3198 3199 3248)
Arenig477.1 - 468.0France (Montagne Noire) Megalaspis sp. (20821 20831)
Arenig477.1 - 468.0China (GanSu) M. sp. (8575)
Arenig477.1 - 468.0China (Sichuan) M. sp. (7680)
Arenig477.1 - 468.0Bolivia Megalaspis sp. (8846)
Arenig477.1 - 468.0China (ShanXi) M. sp. (7887)
Arenig477.1 - 468.0Norway M. sp. (3184)
Arenig477.1 - 468.0Argentina Megalaspis sp. (8777 9009)
Arenigian477.1 - 468.0Argentina (Salta) Megalaspis pugiocauda (115703) Megalaspis saltaensis (115725 115736 115738 115866)
Billingen475.6 - 471.3Estonia M. estonica (191967 191973) M. sp. (191453) Paramegistaspis leuchtenbergi (191966)
Billingen475.6 - 471.3Sweden M. estonica (198164 198165 198166 198169 198170) M. planilimbata (198184 198187) M. sp. (198179) Plesiomegalaspis estonica (192904) Plesiomegalaspis planilimbata (192718)
Billingen475.6 - 471.3Russian Federation M. estonica (169216 198709) M. estonica, Megalaspides norvegica (169217) M. leuchtenbergi (169231) M. planilimbata, M. leuchtenbergi, Megalaspides norvegica (169218) Paramegistaspis leuchtenbergi (169221)
Billingen475.6 - 471.3Sweden (Närne) Plesiomegalaspis estonica (192903)
Billingen475.6 - 471.3Russian Federation (Ingria) M. estonica (191657 191658 191969)
Billingen475.6 - 471.3Estonia (Harju) M. estonica (191970) Paramegistaspis leuchtenbergi (191968 191972)
Langevoja472.1 - 469.1Sweden M. limbata (198069 198071 198080 198097 198100 198104 198107 198110)
Hunderum472.1 - 465.9Sweden M. acuticauda (198059)
Valaste472.1 - 465.9Sweden M. sp. (198039)
Dapingian471.3 - 469.4Norway (Eiker-Sandsvær) M. hyorrhina (191041 191042 191043 191044 191047)
Volkhov471.3 - 469.1Russian Federation (Leningrag oblast) M. lata (235818)
Volkhov471.3 - 469.1Russian Federation M. acuticauda (157117 157119 157120 157121 157124 157126 157127 157128 157130 157133 157135 157137 157139 157140 157141) M. gibba (157105 157110 157113 157131) M. hyorrhina (157102 157104 157111)
Volkhov471.3 - 469.1Sweden Megalaspis acuticauda (188266) M. lata (198137 198140 198142 198144 198150 198151 198152 198153 198158) M. limbata (198115 198119 198135) M. simon (198114 198116 198122 198124 198128 198130 198132) M. sp. (198141 198146 198161)
Volkhov471.3 - 469.1Latvia M. limbata (207274)
Volkhov471.3 - 469.1Norway Megalaspis gigas (56469)
Volkhov471.3 - 469.1Sweden (Bornholm) M. polyphemus (173625 173626) M. polyphemus, M. limbata (173564 173600)
Whiterockian471.3 - 457.3USA (Nevada) M. sp. (104329)
Darriwilian469.4 - 458.2Russian Federation (Siberia) M. polyphemus (205568) M. sp. (205379)
Darriwilian469.4 - 458.2Iran Megalaspis sp. (66865)
Kunda469.1 - 464.3Belarus M. sp. (195451)
Kunda469.1 - 464.3Estonia (Ida-Viru) M. gibba (195558)
Kunda469.1 - 464.3Sweden Megalaspis acuticauda (188217 188218 188224 188283 188300 188302) Megalaspis centaurus (188285) Megalaspis extenuata (188214 188292) Megalaspis extenuata, Megalaspis rudis (188286) Megalaspis gibba, Megalaspis acuticauda (188268) Megalaspis gigas (188296 188297 188298) Megalaspis heros (188213) Megalaspis heros, Megalaspis extenuata, Megalaspis rudis (188210 188215 188219 188221 188222 188284) Megalaspis heros, Megalaspis gibba, Megalaspis rudis (188271) Megalaspis heros, Megalaspis rudis (188272) Megalaspis heros, Megalaspis sp., Megalaspis rudis (188299) Megalaspis rudis (188273 188279 188280 188282 188287 188288 188289 188290 188291 188293) Megalaspis sp., Megalaspis heros (188295)
Kunda469.1 - 464.3Lithuania M. sp. (207280)
Kunda469.1 - 464.3Latvia M. limbata (207276)
Kunda469.1 - 464.3Russian Federation M. acuticauda (157142 157143 157144 157145 157146 157147 157148 157149) M. sp. (235847)
Early/Lower Llanvirn468.0 - 461.1Norway M. sp. (3180)
Oretanian468.0 - 461.0Spain (Guadalajara) M. sp. (20914)
Llanvirn468.0 - 458.2China (GanSu) M. sp. (8567)
Costonian - Harnagian458.2 - 457.2Norway Megalaspis sp. (3255)
Caradoc458.2 - 449.5China (GanSu) M. sp. (8565)