| 词条 | Emuelloidea |
| 释义 |
| fossil_range = {{fossilrange|517}} late Botomian | image = BalcoracaniaDailyi.png | image_caption = Balcoracania dailyi of the family Emuellidae Lower Cambrian Emu Shale Kangaroo Island, South Australia © Dave Simpson | regnum = Animalia | phylum = Arthropoda | classis = Trilobita | ordo = Redlichiida | subordo = Redlichiina | superfamilia = Emuelloidea | superfamilia_authority = Pocock, 1970 | subdivision_ranks = Families | subdivision =
}}Emuelloidae are a small superfamily of trilobites, a group of extinct marine arthropods, that lived during the late Lower Cambrian (late Botomian) of the East Gondwana supercontinent, in what are today South-Australia and Antarctica. Emuelloidea can be recognized by having a prothorax consisting of 3 or 6 segments, the most backward one of which is carrying very large trailing spines. Behind it is the so-called opistothorax. There are two families, the Emuellidae (with a prothorax of six segments) and the Megapharanaspididae (with a prothorax of three segments).[1] References1. ^{{cite journal|last1= Paterson|first1= R.J.|last2= Jago|first2=J.B.|year= 2006|title= New trilobites from the Lower Cambrian Emu Bay Shale Lagerstätte at Big Gully, Kangaroo Island, South Australia.|journal= Memoirs of the Association of Australasian Palaeontologists|volume= 32|pages= 43–57|issn= 0810-8889|url= http://hdl.handle.net/1959.14/10651}} {{Taxonbar|from=Q5374868}}{{Redlichiida-stub}} 5 : Cambrian trilobites|Redlichiina|Emuelloidea|Cambrian Series 2 first appearances|Cambrian Series 2 extinctions |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。