156 research outputs found
Mieridduryn Pates & Botting & Muir & Wolfe 2022
No full textGenus Mieridduryn nov. Etymology. From Welsh mieri (bramble) and duryn (proboscis, snout), meaning “ bramble-snout ”. The dd is pronounced as a soft th, and results from mutation following a feminine noun. Gender f. Diagnosis. Panarthropod with head region bearing dorsal sclerite, annulated proboscis with spiniform dorsal projections and radial mouthparts composed of small,sclerotized plates;gut trace leading to posterior-facing mouth; trunk bears large subrectangular dorsolateral flaps with rounded distal margins; dorsolateral flaps bear setal structures on surface facing body midline; annulated lobopods display triangular outline and possess short triangular spines on posterior margin.Published as part of Pates, Stephen, Botting, Joseph P., Muir, Lucy A. & Wolfe, Joanna M., 2022, Ordovician opabiniid-like animals and the role of the proboscis in euarthropod head evolution, pp. 1-15 in Nature Communications 13 (1) on page 2, DOI: 10.1038/s41467-022-34204-w, http://zenodo.org/record/734684
Supporting data for: Impact of ontogeny and spines on the hydrodynamic performance of the Cambrian arthropod Isoxys
No full textSupporting data for Royal Society Open Science publication: Pates S, Ma J, Wu Y, Fu D Impact of ontogeny and spines on the hydrodynamic performance of the Cambrian arthropod Isoxys. R. Soc. Open Sci. ;11: 240894. https://doi.org/10.1098/rsos.24089
2D cephalic morphometry data models
No full textPhotographs taken for production of cephalon outline semilandmark curves (Drage and Pates). Citations for the images that are derived from published literature (rather than original photos) are given in Drage and Pates 2024 Appendix 1, also available at this DOI. For a portion of specimens photos are not available - these were taken at a different time, however, the tps files (with all semilandmark coordinates used for the analyses) are also included here
2D cephalic morphometry data models
No full textPhotographs taken for production of cephalon outline semilandmark curves (Drage and Pates). Citations for the images that are derived from published literature (rather than original photos) are given in Drage and Pates 2024 Appendix 1, also available at this DOI. For a portion of specimens photos are not available - these were taken at a different time, however, the tps files (with all semilandmark coordinates used for the analyses) are also included here
Distinct causes underlie double-peaked trilobite morphological disparity
No full textAppendices (all raw data, principal component landmarks, and statistical test results) and R code needed to replicate the result of Drage & Pates (2024)
Preprint: Experimental protocol for validation of Computational Fluid Dynamics palaeoecological simulations
No full textSupplementary data associated with the preprinted publication 'Experimental protocol for validation of Computational Fluid Dynamics palaeoecological simulations' by Drage, Pates, and Minter (2025)
Reply to Comment on "Aysheaia prolata from the Utah Wheeler Formation (Drumian, Cambrian) is a frontal appendage of the radiodontan Stanleycaris" with the formal description of Stanleycaris
No full textAs part of a comprehensive examination of all radiodontans from Cambrian localities in the USA, Pates et al. (2017a, b) and Pates and Daley (2017) revised the taxonomic affinities of several described specimens. This included the reinterpretation of two putative lobopodians, one from the Wheeler Formation (Utah, USA) and one from the Valdemiedes Formation (Spain), as frontal appendages of the radiodontan genera Stanleycaris and Caryosyntrips respectively. In their comment, Gámez Vintaned and Zhuravlev (2018) disagree with these conclusions and raise three topics for discussion: (i) anatomical features they suggest support a lobopodian affinity for “Mureropodia”; (ii) the identity of Caryosyntrips as a radiodontan, and the assignment of certain specimens to this genus; and (iii) the nomenclatural status of Stanleycaris hirpex as an invalid taxon. For (i), we dispute that the anatomical features put forward by Gámez Vintaned and Zhuravlev (2018) are biological and conclude that a lobopodian affinity for Mureropodia is untenable. In response to (ii), we provide further evidence supporting a radiodontan affinity for Caryosyntrips, and those specimens ascribed to this genus. Finally, we concur with (iii) Stanleycaris as an invalid taxon according to the International Code on Zoological Nomenclature (ICZN), and have rectified the situation by providing a valid systematic description
Comment on “ Aysheaia prolata from the Utah Wheeler Formation (Drumian, Cambrian) is a frontal appendage of the radiodontan Stanleycaris ” by Stephen Pates, Allison C. Daley, and Javier Ortega-Hernández
No full textPates et al. (2017) and Pates and Daley (2017) reinterpreted a number of presumable xenusians (lobopodians) and described some new fossils from various Cambrian Lagerstätten as radiodontan (anomalocaridid) frontal appendages. The authors suggested that some features including overall length of a specimen, a number of tentative podomeres, a number of ventral blades (spines) and dorsal spines, their morphology, and an angle between the dorsal and ventral surfaces (θ) of a specimen provide enough information for a fairly good morphological description and a relevant systematic interpretation of stem group ecdysozoans. The case of xenusian Mureropodia apae from the lower Cambrian Valdemiedes Formation of Murero, northeastern Spain (Gámez Vintaned et al. 2011), which Pates and Daley (2017) identified as radiodontan Caryosyntrips cf. camurus, does not verify a plausibility of such a reductive approach
Large euarthropod carapaces from a high latitude Cambrian (Drumian) deposit in Spain
No full textDeposits 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 (East Gondwana), which provide a high resolution picture of the fauna at low latitudes. By contrast, our knowledge of Cambrian animals from higher latitudes is relatively poor. This patchiness in our knowledge of animal life during the radiation of animals in the Cambrian period limits our ability to understand and detect palaeogeographic trends and does not provide a full appreciation of animal diversity at this time. Here we report a new middle Cambrian (Drumian) site preserving lightly sclerotized euarthropod carapaces, sponges and palaeoscolecids near the village of Mesones de Isuela in the Iberian Chains (Spain). We describe three bivalved euarthropod carapace morphs, two comparable to those described from the only other high latitude Drumian deposit, the Jince Formation (Czechia), and one distinct from previous discoveries. These new findings highlight the importance of high latitude Gondwana Konservat Lagerstatten for understanding the palaeogeographical aspect of the radiation of early animals and suggest that bivalved euarthropods at high latitudes were larger than those at lower latitudes during the Cambrian
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