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Evidence for Monophyly and Arthropod Affinity of Cambrian Giant Predators
Evidence indicates that anomalocaridids, Opabinia, and Kerygmachela form a monophyletic clade, and for this group an unnamed (sub)phylum-level taxon within an arthropod (super)Phylum is proposed. Expand
Small Bilaterian Fossils from 40 to 55 Million Years Before the Cambrian
Ten phosphatized specimens of a small animal displaying clear bilaterian features have been recovered from the Doushantuo Formation, China, and provide the first evidence confirming the phylogenetic inference that Bilateria arose well before the Cambrian. Expand
Identification and characterization of novel amphioxus microRNAs by Solexa sequencing
The results indicate that Solexa sequencing allows the successful discovery of novel miRNAs from amphioxus with high accuracy and efficiency and provides an opportunity to decipher how the elaboration of the miRNA repertoire that occurred during chordate evolution contributed to the evolution of the vertebrate body plan. Expand
Fossil sister group of craniates: Predicted and found
Haikouella agrees so closely with recent predictions about pre‐craniates that the difficult problem of craniate origins is nearly solved. Expand
An early Cambrian craniate-like chordate
A recently discovered craniate-like chordate, Haikouella lanceolata, is described from 305 fossil specimens inHaikou near Kunming, indicating that this 530 million-year-old (Myr) fish-like animal probably represents a very early craniatesate- like chordate that lived near the beginning of the Cambrian period during the main burst ofThe Cambrian explosion. Expand
Paleoecology of benthic metazoans in the Early Cambrian Maotianshan Shale biota and the Middle Cambrian Burgess Shale biota: evidence for the Cambrian substrate revolution
Abstract As the depth and intensity of bioturbation increased through the Proterozoic–Phanerozoic transition, the substrates on which marine benthos lived changed from being relatively firm with aExpand
Morphological and ecological disparity in Naraoiids (Arthropoda) from the Early Cambrian Chengjiang fauna, China
New material shows previously unknown features in Misszhouia longicaudata, including frontal organs anterior to a sclerotised lobe of the hypo stomal 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. Expand
Revision of the Cambrian discoidal animals Stellostomites eumorphus and Pararotadiscus guizhouensis from South China
Anatomical and taphonomical analyses indicate that S. eumorphus and P. guizhouensis were gregarious pelagic animals and emphasize close phylogenetic relations with lophophorates, though some features do not exclude affinitics with echinoderms. Expand
The first tunicate from the Early Cambrian of South China
Based on new, more complete “Cheungkongella” specimens that show branching tentacles, this form may be a lophophorate, and in any case is not a tunicate. Expand
Head Segmentation in Early Cambrian Fuxianhuia: Implications for Arthropod Evolution
The arthropod Fuxianhuia from the Chengjiang fauna displays primitive aspects of cephalic segmentation and trunk limb morphology that indicate a basal position within Euarthropoda. The cephalonExpand