Stephen Pates
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View article: A morphometric approach to the taxonomic dilemma of <i>Zonozoe drabowiensis</i> Barrande, 1872 and <i>Zonoscutum solum</i> Chlupáč, 1999 (Upper Ordovician, Czech Republic)
A morphometric approach to the taxonomic dilemma of <i>Zonozoe drabowiensis</i> Barrande, 1872 and <i>Zonoscutum solum</i> Chlupáč, 1999 (Upper Ordovician, Czech Republic) Open
Zonozoe drabowiensis Barrande, 1872 and Zonoscutum solum Chlupáč, 1999 are rare and incompletely preserved arthropods from the Upper Ordovician of the Czech Republic. Their classification has been a subject of debate for over a century due…
View article: Hierarchical importance of factors impacting trilobite cephalic disparity
Hierarchical importance of factors impacting trilobite cephalic disparity Open
1 Abstract Trilobite cephala show high disparity owing to their supporting of key functional ecological structures, such as sensory and feeding structures, and those enabling important behaviours like enrollment and exoskeleton moulting. P…
View article: Range and radiation of Cambrian Trilobites
Range and radiation of Cambrian Trilobites Open
Revealing the patterns and drivers of diversity in the Cambrian requires an understanding of distribution. On a dynamic Earth with uncertain palaeogeography, the understanding of range and diversity requires novel methodology and approache…
View article: From organisms to biodiversity: the ecology of the Ediacaran/Cambrian transition
From organisms to biodiversity: the ecology of the Ediacaran/Cambrian transition Open
The Ediacaran/Cambrian transition (ECT; ~575–500 Ma) captures the early diversification of animals, including the oldest crown-group taxa of most major animal phyla alive today. Key to understanding the drivers underneath the ECT macroevol…
View article: Impact of ontogeny and spines on the hydrodynamic performance of the Cambrian arthropod <i>Isoxys</i>
Impact of ontogeny and spines on the hydrodynamic performance of the Cambrian arthropod <i>Isoxys</i> Open
A metazoan-dominated biological pump was established early in the Phanerozoic, a time that saw the evolution of the first pelagic euarthropod zooplankton such as some species of the Cambrian bivalved euarthropod Isoxys . Pelagic groups evo…
View article: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives
Multiple origins of dorsal ecdysial sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives
Multiple origins of dorsal ecdysial sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives
Multiple origins of dorsal ecdysial sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Author response: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives
Author response: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: A new radiodont from the lower Cambrian (Series 2 Stage 3) Chengjiang Lagerstätte, South China informs the evolution of feeding structures in radiodonts
A new radiodont from the lower Cambrian (Series 2 Stage 3) Chengjiang Lagerstätte, South China informs the evolution of feeding structures in radiodonts Open
This is the final version. Available on open access from Taylor and Francis via the DOI in this record
View article: Hydrodynamic performance of Ordovician archaeostracan carapaces
Hydrodynamic performance of Ordovician archaeostracan carapaces Open
The diversification of macroscopic pelagic arthropods such as caryocaridid archaeostracans was a crucial aspect of the Great Ordovician Biodiversification Event, and the plankton revolution. A pelagic mode of life has been inferred for car…
View article: Ontogeny and brooding strategy of the early Cambrian arthropod Isoxys minor from the Qingjiang biota
Ontogeny and brooding strategy of the early Cambrian arthropod Isoxys minor from the Qingjiang biota Open
lsoxys is a worldwide distributed bivalved arthropod known almost exclusively from Cambrian Burgess Shale-type Lagerstätten. Outline analyses using 34 specimens of the iconic large bivalved arthropod Isoxys minor from the Cambrian Sta…
View article: A new radiodont from the lower Cambrian (Series 2 Stage 3) Chengjiang Lagerst&#228;tte, South China informs the evolution of feeding structures in radiodonts
A new radiodont from the lower Cambrian (Series 2 Stage 3) Chengjiang Lagerstätte, South China informs the evolution of feeding structures in radiodonts Open
Radiodonts, a diverse clade of early Palaeozoic stem-group euarthropods, have provided critical information on early euarthropod evolution, and were important constituents of early animal ecosystems. The well-known Chengjiang Lagerstä…
View article: Intraspecific variation of early Cambrian (stage 3) arthropod Retifacies abnormalis revealed by morphometric analyses
Intraspecific variation of early Cambrian (stage 3) arthropod Retifacies abnormalis revealed by morphometric analyses Open
Retifacies abnormalis is a large artiopodan euarthropod known only from the famous fossil deposits of the Chengjiang biota, China (Cambrian Series 2, Stage 3). It is well known for its pronounced reticulated ornamentation that covers the e…
View article: Hydrodynamic function of genal prolongations in trinucleimorph trilobites revealed by computational fluid dynamics
Hydrodynamic function of genal prolongations in trinucleimorph trilobites revealed by computational fluid dynamics Open
Trilobites, a diverse clade of Palaeozoic arthropods, repeatedly converged on the ‘trinucleimorph’ morphology. Trinucleimorphs possessed vaulted cephala with a broad anterior fringe and prominent posteriorly orientated genal prolongations.…
View article: Experimental protocol for validation of Computational Fluid Dynamics palaeoecological simulations
Experimental protocol for validation of Computational Fluid Dynamics palaeoecological simulations Open
Computational Fluid Dynamics (CFD) simulations are increasingly used to test palaeoecological hypotheses. These analyses output simulated velocity and pressure flow profiles, and drag and lift force values acting on a model. These outputs …
View article: Distinct causes underlie double-peaked trilobite morphological disparity
Distinct causes underlie double-peaked trilobite morphological disparity Open
Trilobite cephalic morphology impacted the autecology of individuals, and is critical for high- and low-level taxonomic assignments. Disparity in trilobite cephalon shape varied through time and was integral to the occupation of a diversit…
View article: Geographic, taxonomic and temporal interrogation of bradoriid diversity and carapace disparity
Geographic, taxonomic and temporal interrogation of bradoriid diversity and carapace disparity Open
This is the final version. Available on open access from Coquina Press via the DOI in this record
View article: Reviewer #1 (Public Review): Multiple origins of cephalic sutures in trilobites and their relatives
Reviewer #1 (Public Review): Multiple origins of cephalic sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Reviewer #3 (Public Review): Multiple origins of cephalic sutures in trilobites and their relatives
Reviewer #3 (Public Review): Multiple origins of cephalic sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives
Multiple origins of dorsal ecdysial sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Reviewer #2 (Public Review): Multiple origins of cephalic sutures in trilobites and their relatives
Reviewer #2 (Public Review): Multiple origins of cephalic sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Multiple origins of cephalic sutures in trilobites and their relatives
Multiple origins of cephalic sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Rapid growth in a large Cambrian apex predator
Rapid growth in a large Cambrian apex predator Open
Despite the importance of ontogenetic data on early diverging euarthropods to our understanding of the ecology and evolution of past life, the data are distinctly lacking, as reconstructing life histories of fossil animals is often challen…
View article: Multiple origins of dorsal ecdysial sutures in trilobites and their relatives
Multiple origins of dorsal ecdysial sutures in trilobites and their relatives Open
Euarthropods are an extremely diverse phylum in the modern, and have been since their origination in the early Palaeozoic. They grow through moulting the exoskeleton (ecdysis) facilitated by breaking along lines of weakness (sutures). Arti…
View article: Large euarthropod carapaces from a high latitude Cambrian (Drumian) deposit in Spain
Large euarthropod carapaces from a high latitude Cambrian (Drumian) deposit in Spain Open
Deposits preserving non-biomineralized tissues and animals provide an unrivalled opportunity to study the evolution and radiation of early animal life. Numerous sites of Cambrian age are known from North America (Laurentia) and South China…