Abstract

Misszhouia longicaudata (Zhang and Hou) from the Chengjiang lagerstätte is separated from Naraoia Walcott by its antennular orientation, its smaller cephalic caeca and gut, lanceolate distal exopod lobe, and partial fusion of the exopod and first endopodal podomere. Naraoia spinosa Zhang and Hou (also from Chengjiang) shares derived characters with the type species, N. compacta. Deposit feeding is suggested for Naraoia spinosa by both morphology and preservational circumstances. New material shows previously unknown features in Misszhouia longicaudata, including frontal organs anterior to a sclerotised lobe of the hypostomal complex, the position of the mouth opening, details of antennule and biramous limb attachments, morphology of the sternites and limb rami, and the structure of the ventral cuticle in the cephalon and pleural areas.

 
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Bibliographic Data

Short Form
Chen et al., 1997, Rec. Aust. Mus. 49(1): 1–24
Author
Jun-Yuan Chen; Gregory D. Edgecombe; Lars Ramsköld
Year
1997
Title
Morphological and ecological disparity in naraoiids (Arthropoda) from the Early Cambrian Chengjiang Fauna, China
Serial Title
Records of the Australian Museum
Volume
49
Issue
1
Start Page
1
End Page
24
DOI
10.3853/j.0067-1975.49.1997.249
Language
English
Date Published
04 July 1997
Cover Date
04 July 1997
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
CAMBRIAN, EARLY; TRILOBITA; PALAEONTOLOGY
Digitized
17 February 2009
Available Online
04 March 2009
Reference Number
249
EndNote
/Uploads/Journals/17838/249.enw
Title Page
/Uploads/Journals/17838/249.pdf
File size: 96kB
Complete Work
/Uploads/Journals/17838/249_complete.pdf
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