5 Works

Data from: The Collins’ monster, a spinous suspension-feeding lobopodian from the Cambrian Burgess Shale of British Columbia

Jean-Bernard Caron & Cédric Aria
Lobopodians, a paraphyletic group of Palaeozoic vermiform animals bearing metameric appendages, are key to the origin of extant panarthropods. First discovered in 1983 on Mount Stephen (Yoho National Park, British Columbia), the Cambrian (Wuliuan) Burgess Shale lobopodian nicknamed “Collins’ monster” is formally described as Collinsovermis monstruosus gen. et sp. nov. A formal systematic revision of the poorly known lobopodian Acinocricus stichus from Utah is also provided. The body of Collinsovermis is plump and compact, lacking...

A combined approach of mitochondrial DNA and anchored nuclear phylogenomics sheds light on unrecognized diversity, phylogeny, and historical biogeography of the cascade frogs, genus Amolops (Anura: Ranidae)

Yunhe Wu, Fang Yan, Bryan L. Stuart, Elizabeth Prendini, Chatmongkon Suwannapoom, Hollis A. Dahn, Bao-Lin Zhang, Hong-Xia Cai, Yong-Biao Xu, Ke Jiang, Hong-Man Chen, Alan R. Lemmon, Emily Moriarty Lemmon, Christopher J. Raxworthy, Nikolai L. Orlov, Robert W. Murphy & Jing Che
Amolops is one of the most species-rich genera in Ranidae, with 59 recognized species. This genus currently includes six species groups diagnosed mainly by morphology. Several recent molecular studies indicated that the classification of species groups within Amolops remains controversial, and key nodes in the phylogeny have been inadequately resolved. In addition, the diversity of cascade frogs remains poorly understood, especially for those from incompletely sampled regions. Herein, we investigate the species-level diversity within genus...

Morphology and osteohistology of a large-bodied caenagnathid (Theropoda: Oviraptorosauria) from the Hell Creek Formation (Montana): implications for size-based classifications and growth reconstruction in theropods

Thomas Cullen, D. Jade Simon, Elizabeth Benner & David Evans
Oviraptorosaurs, like many coelurosaurians, are frequently diagnosed using incomplete or fragmentary skeletal remains, with factors such as body size often used to assign material to a particular taxon or as a basis for describing new species. Here we describe a partial skeleton, ROM VP 65884, from the Hell Creek Formation (Montana), and through morphological and phylogenetic comparisons identify it as belonging to Caenagnathidae, and likely referable to Anzu wyliei. We perform multi-element osteohistological sampling of...

Relatedness and the composition of communities over time: evaluating phylogenetic community structure in the late Cenozoic record of bivalves

Lucy Chang & Phillip Skipwith
Understanding the mechanisms that prevent or promote the coexistence of taxa at local scales is critical to understanding how biodiversity is maintained. Competitive exclusion and environmental filtering are two processes thought to limit which taxa become established in a community. However, determining the relative importance of the two processes is a complex task, especially when the critical initial stages of colonization cannot be directly observed. Here, we explore the use of phylogenetic community structure for...

An integrative phylogenomic approach illuminates the evolutionary history of Old World tree frogs (Anura: Rhacophoridae)

Jinmin Chen, Elizabeth Prendini, Yun-He Wu, Bao-Lin Zhang, Chatmongkon Suwannapoom, Hong-Man Chen, Jie-Qiong Jin, Emily Moriarty Lemmon, Alan R. Lemmon, Bryan L. Stuart, Christopher J. Raxworthy, Robert W. Murphy, Zhi-Yong Yuan & Jing Che
Rhacophoridae is one of the most speciose and ecologically diverse families of amphibians. Resolution of its evolutionary relationships is key to understanding the accumulation of biodiversity, yet previous hypotheses based on Sanger sequencing exhibit much discordance amongst generic relationships. This conflict precludes the making of sound macroevolutionary conclusions. Herein, we conduct the first phylogenomic study using broad-scale sampling and sequences of 352 nuclear DNA loci obtained using anchored hybrid enrichment targeted sequencing. The robust time-calibrated...

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  • Royal Ontario Museum
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  • North Carolina Museum of Natural Sciences
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  • University of Toronto
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  • Kunming Institute of Zoology
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  • Yunnan University
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  • Field Museum of Natural History
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  • Nanjing Institute of Geology and Paleontology
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  • Prirodnjacki Muzej Crne Gore
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  • University of Kentucky
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