An Early Cambrian stem polychaete with pygidial cirri

Jakob Vinther; Danny Eibye-Jacobsen; David Alexander Taylor Harper

doi:10.1098/rsbl.2011.0592

An Early Cambrian stem polychaete with pygidial cirri

Jakob Vinther, Danny Eibye-Jacobsen, David Alexander Taylor Harper

42 Citationer (Scopus)

Abstract

The oldest annelid fossils are polychaetes from the Cambrian Period. They are representatives of the annelid stem group and thus vital in any discussion of how we polarize the evolution of the crown group. Here, we describe a fossil polychaete from the Early Cambrian Sirius Passet fauna, Pygocirrus butyricampum gen. et sp. nov., with structures identified as pygidial cirri, which are recorded for the first time from Cambrian annelids. The body is slender and has biramous parapodia with chaetae organized in laterally oriented bundles. The presence of pygidial cirri is one of the characters that hitherto has defined the annelid crown group, which diversified during the Cambrian-Ordovician transition. The newly described fossil shows that this character had already developed within the total group by the Early Cambrian. This journal is

Originalsprog	Engelsk
Tidsskrift	Biology Letters
Vol/bind	7
Udgave nummer	6
Sider (fra-til)	929-932
Antal sider	4
ISSN	1744-9561
DOI	https://doi.org/10.1098/rsbl.2011.0592
Status	Udgivet - 23 dec. 2011

Adgang til dokumentet

10.1098/rsbl.2011.0592

rsbl.2011.0592Forlagets udgivne version, 496 KB

Citationsformater

@article{502a3fee9b184d0f824c7f4e5ffcccae,

title = "An Early Cambrian stem polychaete with pygidial cirri",

abstract = "The oldest annelid fossils are polychaetes from the Cambrian Period. They are representatives of the annelid stem group and thus vital in any discussion of how we polarize the evolution of the crown group. Here, we describe a fossil polychaete from the Early Cambrian Sirius Passet fauna, Pygocirrus butyricampum gen. et sp. nov., with structures identified as pygidial cirri, which are recorded for the first time from Cambrian annelids. The body is slender and has biramous parapodia with chaetae organized in laterally oriented bundles. The presence of pygidial cirri is one of the characters that hitherto has defined the annelid crown group, which diversified during the Cambrian-Ordovician transition. The newly described fossil shows that this character had already developed within the total group by the Early Cambrian. This journal is",

author = "Jakob Vinther and Danny Eibye-Jacobsen and Harper, {David Alexander Taylor}",

year = "2011",

month = dec,

day = "23",

doi = "10.1098/rsbl.2011.0592",

language = "English",

volume = "7",

pages = "929--932",

journal = "Biology Letters",

issn = "1744-9561",

publisher = "The/Royal Society",

number = "6",

}

TY - JOUR

T1 - An Early Cambrian stem polychaete with pygidial cirri

AU - Vinther, Jakob

AU - Eibye-Jacobsen, Danny

AU - Harper, David Alexander Taylor

PY - 2011/12/23

Y1 - 2011/12/23

N2 - The oldest annelid fossils are polychaetes from the Cambrian Period. They are representatives of the annelid stem group and thus vital in any discussion of how we polarize the evolution of the crown group. Here, we describe a fossil polychaete from the Early Cambrian Sirius Passet fauna, Pygocirrus butyricampum gen. et sp. nov., with structures identified as pygidial cirri, which are recorded for the first time from Cambrian annelids. The body is slender and has biramous parapodia with chaetae organized in laterally oriented bundles. The presence of pygidial cirri is one of the characters that hitherto has defined the annelid crown group, which diversified during the Cambrian-Ordovician transition. The newly described fossil shows that this character had already developed within the total group by the Early Cambrian. This journal is

AB - The oldest annelid fossils are polychaetes from the Cambrian Period. They are representatives of the annelid stem group and thus vital in any discussion of how we polarize the evolution of the crown group. Here, we describe a fossil polychaete from the Early Cambrian Sirius Passet fauna, Pygocirrus butyricampum gen. et sp. nov., with structures identified as pygidial cirri, which are recorded for the first time from Cambrian annelids. The body is slender and has biramous parapodia with chaetae organized in laterally oriented bundles. The presence of pygidial cirri is one of the characters that hitherto has defined the annelid crown group, which diversified during the Cambrian-Ordovician transition. The newly described fossil shows that this character had already developed within the total group by the Early Cambrian. This journal is

U2 - 10.1098/rsbl.2011.0592

DO - 10.1098/rsbl.2011.0592

M3 - Journal article

SN - 1744-9561

VL - 7

SP - 929

EP - 932

JO - Biology Letters

JF - Biology Letters

IS - 6

ER -

An Early Cambrian stem polychaete with pygidial cirri

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater