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Taxonomy
Megalaspides was named by Brögger (1886) [Sepkoski's age data: O Aren-u Sepkoski's reference number: 795]. Its type is Megalaspis dalecarlicus.
It was assigned to Isotelinae by Fortey (1975) and Hoel (1999); to Asaphida by Sepkoski (2002); and to Asaphidae by Jell and Adrain (2002).
It was assigned to Isotelinae by Fortey (1975) and Hoel (1999); to Asaphida by Sepkoski (2002); and to Asaphidae by Jell and Adrain (2002).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1886 | Megalaspides Brögger |
| 1956 | Lannacus Tjernvik |
| 1975 | Megalaspides Fortey |
| 1999 | Megalaspides Hoel |
| 2002 | Megalaspides Jell and Adrain p. 404 |
| 2002 | Lannacus Sepkoski |
| 2002 | Megalaspides Sepkoski |
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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. †Megalaspides Brögger 1886
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†Megalaspides dalecarlicus Holm 1882
†Megalaspides nericiensis Wiman 1905
†Megalaspides striatellus Fortey 1975
Invalid names: Lannacus Tjernvik 1956 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Hendy 2009 | |||||
Collections (104 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tremadocian | Iran | M. winsnesi (66867) | |
| Tremadocian - Floian | Sweden | M. sp. (3195) | |
| Tremadocian - Floian | Norway (Akershus) | M. nericiensis (190988) | |
| Tremadocian - Floian | Iran | M. kolutensis, M. winsnesi (66868) | |
| Tremadocian - Floian | Norway | M. nericiensis (190982) | |
| Tremadocian - Floian | Norway (Eiker-Sandsvær) | M. nericiensis (190879 190880 190881 190882 190883 190884 190885 190886 190887 190888 190918 190920 190974 190978 190986 190989 190991) | |
| Tremadocian - Floian | Norway (Oslo-Asker) | M. nericiensis (190987 190992) | |
| Tremadocian - Floian | Norway (Modum) | M. nericiensis (190923 190985 190990) | |
| Arenigian | China (Hubei) | M. laningensis (116201 116202 116203) | |
| Dawan | China (Hunan and Hubei) | M. sp. (7717) | |
| Dawan | China (Guizhou) | M. sp. (7385) | |
| Arenig | China (Hubei) | M. sp. (4709 4714 4715 4719 4720 4723) | |
| Arenig | Sweden | M. sp. (3196 3198 3199 3248) | |
| Arenig | China (Guizhou) | M. sp. (4757 4758 4763 4765 5250 5251 5252 5254 5256 5260 5264 5265 5266 5267 5268 5269 5271 7355) | |
| Arenig | China (ShanXi) | M. sp. (7887) | |
| Arenig | China (GanSu) | M. sp. (8575) | |
| Arenig | China (Yunnan) | M. sp. (5429 5430 5431 5432 5434 5435 7263 7265) | |
| Arenig | China (Sichuan) | M. sp. (5405 5406 5408 5410 5412 7649 7660 7669 7670) | |
| Bendigonian - Chewtonian | Sweden | M. dalecarlicus (190994) | |
| Blackhillsian | USA (Nevada) | M. sp. (104553) | |
| Billingen | Estonia | M. spp. (191966) | |
| Billingen | Estonia (Harju) | M. sp. (191972) | |
| Billingen | Russian Federation | M. dalecarlicus (198709) M. paliformis (169217) M. paliformis, M. schmidti, M. dalecarlicus (169218) M. schmidti (169221 198706) M. schmidti, M. inostranzewi (169231) | |
| Billingen | Norway (Spitsbergen) | M. striatellus (106473) | |
| Billingen | Sweden | Lannacus nericiensis (198182 198185) M. dalecarlicus (198174 198175 198177 198178 198179) M. nericiensis (192718) M. sp. (192904) | |
| Volkhov | Sweden | M. sp. (198152 198155 198158) | |
| Late/Upper Llanvirn | China (Hubei) | M. sp. (4712) | |
| Caradoc | China (ZheJiang) | M. sp. (7769) |