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Asaphidae

Trilobita - Asaphida - Asaphidae

Taxonomy
Asaphidae was named by Burmeister (1843). It is the type family of Asaphoidea.

It was synonymized subjectively with Psammobiidae by Bouchet et al. (2010).

It was assigned to Opisthoparia by Phleger (1933); to Asaphacea by Harrington and Leanza (1957); to Agnostida by Robison and Pantoja-Alor (1968); to Asaphida by Whittington et al. (1997) and Owens and Fortey (2009); and to Asaphoidea by Adrain (2011) and Fortey and Bruton (2013).

View classification of included taxa

Synonymy list
YearName and author
1843Asaphidae Burmeister
1933Asaphidae Phleger, Jr. p. 11
1957Asaphidae Harrington and Leanza
1968Asaphidae Robison and Pantoja-Alor p. 780
1997Asaphidae Whittington et al. p. 301
2009Asaphidae Owens and Fortey
2011Asaphidae Adrain p. 107
2013Asaphidae Fortey and Bruton

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

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
Comments: BODY SIZE: Based on component genera; 21 of 22 genera share 10 to < 100 length, 22 of 22 share 10 to < 100 width.f
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 Paibian to the top of the Telychian or 501.00000 to 433.40000 Ma

Collections (3005 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Mindyallan501.0 - 498.5Australia (Queensland) Griphasaphus griphus (77515)
Paibian501.0 - 498.5China (Liaoning) Guohongjunia triangulata (127364)
Franconian - Trempealeauan501.0 - 485.4Australia (Queensland) Golasaphus momedahensis (198276 198277 198278 198280 198282 198283 198284) Golasaphus momedahensis, Atopasaphus petasatus (198279)
Paibian - Taoyuanian501.0 - 485.4China (Hunan) Niobella yangjiawanensis (130015)
Sakian501.0 - 485.4Kazakhstan Eoasaphus superstes (118333 118336 118339 118341 118342 118345 118346 118347 118348)
Iverian498.5 - 494.0Australia (Queensland) Atopasaphus stenocanthus (198293 198294 198295 198297)
Aksayan498.5 - 485.4Kazakhstan Paratamdaspis longiformis (118445 118446 118447 118450 118451 118453 118454 118455 118456 118457 118458 118460 118462 118463)
Batyrbaian498.5 - 485.4Kazakhstan Niobella kozhuchensis (118905 118907 118908 118909 118910)
Niuchehean498.5 - 485.4China (Anhui) Niobella sp. 1, Asaphidae indet. (127534)
Niuchehean498.5 - 485.4China (Hunan) Niobella bella (107334 107335 126681 126682 126730 126731) Niobella sanduensis (107328) Niobella tianjiapingensis (126724) Norinia sp. (126727)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Richmondian449.5 - 443.7Canada (Quebec) Brachyaspis alacer (63675) Isotelus gigas (173873 173875)
Richmondian449.5 - 443.7USA (Michigan) Isotelus gigas (26311) Isotelus iowaensis (353) Isotelus sp., Onchometopus sp. (26313)
Richmondian449.5 - 443.7USA (Ohio) Isotelus maximus (27499 27500) Isotelus maximus, Isotelus megistos (5326) Isotelus sp. (354 368 370 372 395 72540 72542 72543 72544 72545 72546 72547 72548 72551 72552 72553 72554 72555 72556 72557 72558 72559 72560 72564 72565 72566 72569 72571 72572 72573 72574 72575 72576 72577 72578 72579 72584 72588 72615 72620 72625 72804 72805 72806 72807 72810 72812 72833 72836 72844 72850 72851 72868 72870 72871 72873 72875 72876 72879 72880 72881 72883 72884 72910 72919 72920 72926 72927 72928 72929 72930 72932 72933 72949 72951 72953 72959 72960 73035 73036 73037 73039 73040 73120 73122 73123 73124 73125)
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 (Nevada) Anataphrus sp. (78048 78050 78053) Anataphrus sp., Isotelus sp. (78051)
Richmondian449.5 - 443.7Canada (Northwest Territories) Homotelus sp. (188769) Pseudogygites atimarginatus (26097) Pseudogygites hudsoni (26090) Pseudogygites latimarginatus (26091 26093 26094 26095 26096)
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)