A5015934234- Evolution and Paleontology Studies
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Paleontology and Stratigraphy of Fossils
- Morphological variations and asymmetry
- Fossil Insects in Amber
- Geology and Paleoclimatology Research
- Mollusks and Parasites Studies
- Geological formations and processes
- Insect and Arachnid Ecology and Behavior
- Paleontology and Evolutionary Biology
- Paleopathology and ancient diseases
- Plant and animal studies
- Pleistocene-Era Hominins and Archaeology
- Geological Studies and Exploration
- Ichthyology and Marine Biology
- Marine and coastal plant biology
- Forensic Anthropology and Bioarchaeology Studies
- Yersinia bacterium, plague, ectoparasites research
- Parasite Biology and Host Interactions
University of Toronto
2019-2024
Royal Ontario Museum
2021-2024
Google (United States)
2020
The origin of mandibulates, the hyperdiverse arthropod group that includes pancrustaceans and myriapods, dates back to Cambrian. Bivalved groups such as hymenocarines have been argued be early but many species are still poorly known, their affinities remain uncertain. One most common globally distributed Cambrian bivalved arthropods is Tuzoia . Originally described in 1912 from Burgess Shale based on isolated carapaces, its full anatomy has remained largely unknown. Here, we describe new...
The diversity of cephalic morphologies in mandibulates (myriapods and pancrustaceans) was key to their evolutionary success. A group Cambrian bivalved arthropods called hymenocarines exhibit diagnostic mandibulate traits that illustrate this diversity, but many forms are still poorly known. These include the odaraiids, typified by Odaraia alata from Burgess Shale (Wuliuan), characterized its unique tubular carapace rudder-like tail fan, one largest euarthropods at nearly 20 cm length....
Abstract Cambrian bivalved arthropods are a polyphyletic group of carapace‐bearing that includes stem euarthropods, mandibulates and crustaceans. Here, we describe Pakucaris apatis gen. et sp. nov., new mandibulate arthropod from the middle (Wuliuan Stage) Burgess Shale (Marble Canyon, Kootenay National Park, British Columbia, Canada). Two morphotypes this small (11.6–26.6 mm long) recognized, which differ mainly in their size number segments, possibly reflecting sexual dimorphism or...
The origin of the arthropod carapace, an enlargement cephalic tergites, can be traced back to Cambrian period. However, its disparity and evolution are still not fully understood. Here, we describe a new ‘bivalved’ arthropod, Fibulacaris nereidis gen. et sp. nov., based on 102 specimens from middle (Wuliuan Stage) Burgess Shale, Marble Canyon area in British Columbia's Kootenay National Park, Canada. laterally compressed carapace covers most body. It is fused dorsally merges anteriorly into...
Abstract Mantodea (praying mantises) is a group of exclusively predatory insects, which, together with nonraptorial blattodeans (cockroaches and termites) groups found in the fossil record, form Dictyoptera. A central characteristic specialization their first pair legs as raptorial grasping appendages, but evolution from walking to not yet fully understood. Here, we trace appendages Dictyoptera through time using morphometric (morphospaces) approach. We also describe two new mantodean nymphs...
The origin of mandibulate arthropods can be traced back to the Cambrian period several carapace-bearing arthropod groups, but their morphological diversity is still not well characterized. Here, we describe
Abstract Ordovician open marine Lagerstätten are relatively rare and widely dispersed, producing a patchy picture of the diversity biogeography nonmineralized organisms challenging our understanding fate Cambrian groups. Here, for first time, we report soft-bodied fossils, including well-preserved marrellomorph arthropod, fragmentary carapaces, macroalgae, from Late (Katian) Upper Member Kirkfield Formation near Brechin, Ontario. The unmineralized elements associated exceptionally preserved...
Discovered over a century ago, the lower Cambrian (Series 2, Stage 4) Cranbrook Lagerstätte of southeastern British Columbia's Eager Formation is one oldest Burgess Shale-type deposits in North America. This Konservat-Lagerstätte rich olenelloid trilobites, but also yields very low-diversity soft-bodied fossil assemblage including Tuzoia and Anomalocaris , ichnofauna. Its scientific study, however, remains limited. A 2015 field-based investigation by Royal Ontario Museum has revealed new...