...Robert R. Gaines; Mary L. Droser; Patrick J. Orr; Daniel Garson; Emma Hammarlund; Changshi Qi; Donald E. Canfield Abstract Burgess Shale−type biotas occur globally in the Cambrian record and offer unparalleled insight into the Cambrian explosion, the initial Phanerozoic radiation of the Metazoa...

.... Identifiable, nonbiomineralized taxa include components of a Burgess Shale–type biota with red and green algae, primitive sponges, and the arachnomorph arthropod Naraoia compacta . Also exceptionally preserved are the filamentous appendages of a large ptychopariid trilobite and assemblages of oriented...

... discovered in Lagerstätten (e.g. the Burgess Shale). The Chengjiang Biota, an early example of a Burgess Shale-type biota in South China (Cambrian Series 2, Stage 3), is one of the only examples of convincing aspiculate sponges until now. Here, we describe Vauxia pregracilenta sp. nov. and V. paraleioia sp...

... (the latter preserved as three-dimensional, permineralized structures), and indicates interspecific variability in trunk segment numbers. The distribution of Squamacula strengthens the biogeographic connections between early Cambrian “Burgess Shale-type” biotas of Australia and South China. Australimicola...

...Giovanni Pari; Derek E.G. Briggs; Robert R. Gaines Abstract Soft-bodied fossils of Cambrian age, now known as Burgess Shale–type biotas, were first described from the Parker Slate of the northwest Vermont (USA) slate belt in the late 19 th century, 25 years before the discovery of the Burgess Shale...

... of the Burgess Shale-type biotas in China, over 1500 km northeast of the provenance of the Chengjiang Lagerstätte. Cambrorhytium cf. C. major Walcott, 1908 , emend. Conway Morris & Robison, 1988 Figure 2a, b * Author for correspondence: [email protected] 03 02 2005 06...

..., and scavenging of P . guizhouensis carcasses. These associations of P . guizhouensis within the Kaili Biota are unique among occurrences of medusiform fossils in Burgess Shale-type biotas worldwide and provide important insights concerning ecological complexity in the Kaili Biota and in Cambrian marine...

... that are favorable to secondary mineral precipitation. The new specimens provide useful information about the phylogenetic affinities of these early discoidal fossils and help us to better understand the taphonomic modes of non-biomineralizing organisms in Ediacara-type and Burgess Shale-type biotas. 9 10 2013...

... representative of Wronascolex is known from the Sinsk Formation of the lower Cambrian of the Siberian Platform. Other species occur in Burgess Shale-type biotas of Cambrian age from Australia, Spain and North America. New palaeoscolecid material from the Balang Fauna of the Cambrian Series 2 of eastern Guizhou...

.... Orr P.J. Garson D. Hammarlund E.U. QI C. Canfield D.E. 2012b , Burgess Shale–type biotas were not entirely burrowed away...

... of greenish mudstone exhibit soft-bodied preservation, with most specimens coming from the lower interval. However, the biota is common but not as diverse as that of other Lagerstätten such as the Burgess Shale in its type area. The shelly fauna is dominated by the hyolith Haplophrentis carinatus Matthew...

... to Choiaella mainly occur in the Cambrian Burgess Shale–type biota (e.g., Rigby and Hou 1995 ; Zhao et al. 2005 ). Examples from the Fentou biota extend the palaeogeographic distribution of Choiaella and even the family Choiidae after the Cambrian. In the past, the Choiidae were known from only the Lower...

... biota in the southern Canadian Rockies, and suggests that Burgess Shale–type assemblages may be common in the “thin” Stephen Formation, which is regionally widespread. Here we describe a new BST assemblage from the “thin” Stephen Formation at Stanley Glacier, Kootenay National Park, ∼40 km southeast...

... evidence that highly labile tissues, such as nervous tissues, may be more common in fossils from Burgess Shale-type deposits than previously appreciated. These discoveries have provided novel insights into the anatomy and phylogeny of Cambrian animals and have also challenged the basic understanding...

...JIH-PAI LIN; DEREK E.G. BRIGGS Abstract The chemical composition of well-preserved naraoiids from the Chengjiang, Kaili, and Burgess Shale biotas is compared. Gut diverticulae in samples from all three biotas contain C, P, and Fe, indicating a primary composition of organic carbonaceous material...

.... The Lower Cambrian Sirius Passet biota of north Greenland preserves a range of Burgess Shale-type fossils, including forms with a conspicuous three-dimensional axial trace (e.g., Budd 1997, 1998, 1999 ). Of these, Kerygmachela and Pambdelurion are particularly notable in that they have been interpreted...

...Robert R. Gaines; Derek E.G. Briggs; Zhao Yuanlong Abstract Although Cambrian Burgess Shale–type (BST) biotas are fundamental to understanding the radiation of metazoans, the nature of their extraordinary preservation remains controversial. There remains disagreement about the importance...

... occurrence frequencies, whereas a few species are numerically abundant and occur frequently. Overall, in structure and ecology the Mafang community is comparable to the middle Cambrian (Series 3, Stage 5) Burgess Shale biota (Walcott Quarry, Yoho National Park, British Columbia, Canada). This suggests...

...ROBERT R GAINES; DEREK E. G BRIGGS; PATRICK J ORR; PETER VAN ROY Abstract The recently discovered Fezouata Biota, from the Early Ordovician (late Tremadocian to late Floian) of Morocco, preserves a diverse soft-bodied fauna. While preservation is mostly of Burgess Shale-type, giant anomalocaridids...