| 词条 | Margaretia |
| 释义 |
| fossil_range = Middle Cambrian | image = Margaretia dorus Reconstruction.png | image_caption = Reconstruction of M. dorus | genus = Margaretia | parent_authority = Walcott, 1931 | species = dorus | authority = Walcott, 1931 }}Margaretia is a frondose organism known from the middle Cambrian Burgess shale.{{fotbs}} Its fronds reached about 10 cm in length and are peppered with a range of length-parallel oval holes. It was original interpreted as an alcyonarian coral.[1] It was later reclassified as a green alga closely resembling modern Caulerpa by D.F. Satterthwait in her Ph.D. thesis in 1976,[1] a finding supported by Conway Morris and Robison in 1988.[2] More recently, it has been treated as a hemichordate.[3] External links
References1. ^Donna Fields Satterthwait, Paleobiology and Paleoecology of Middle Cambrian Algae from Western North America, Ph.D. Thesis University of California at Los Angeles, 1976. {{Taxonbar|from1=Q6760098|from2=Q6760096}}{{Paleontology-stub}}2. ^1 S.Conway Morris and R.A. Robison, "More soft-bodied Animals and Algae from the Middle Cambrian of Utah and British Columbia", University of Kansas Paleontological Contributions, Paper 122, pages 8-11, 1988. 3. ^{{cite journal|last1=Nanglu|first1=Karma|last2=Caron|first2=Jean-Bernard|last3=Conway Morris|first3=Simon|last4=Cameron|first4=Christopher B.|title=Cambrian suspension-feeding tubicolous hemichordates|journal=BMC Biology|volume=14|issue=1|year=2016|issn=1741-7007|doi=10.1186/s12915-016-0271-4}} 2 : Burgess Shale fossils|Wheeler Shale |
| 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。