Scythes, sickles and other blades: defining the diversity of pectoral fin morphotypes in Pachycormiformes.
| Autor: | Liston JJ; Vertebrate Palaeontology, SNSB-Bayerische Staatssammlung für Paläontologie und Geologie, Munich, Bavaria, Germany.; Palaeobiology, Department of Natural Sciences, National Museums Scotland, Edinburgh, Scotland.; School of Earth Sciences, University of Bristol, Bristol, England.; Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland., Maltese AE; Rocky Mountain Dinosaur Resource Center, Woodland Park, CO, USA., Lambers PH; Universiteitsmuseum Utrecht, Utrecht University, Utrecht, Netherlands., Delsate D; Centre de Recherche Scientifique/Paléontologie, Musée National d'histoire Naturelle de Luxembourg, Luxembourg, Luxembourg., Harcourt-Smith WEH; Division of Paleontology, American Museum of Natural History, New York, NY, USA.; Department of Anthropology, Lehman College, City University of New York, New York, NY, USA.; Department of Anthropology, The Graduate Center, City University of New York, New York, NY, USA., van Heteren AH; Sektion Mammalogie, Zoologische Staatssammlung München, Staatliche Naturwissenschaftliche Sammlungen Bayerns, Munich, Germany.; GeoBio-Center, Ludwig-Maximilians-Universität München, Munich, Germany.; Department Biologie II, Ludwig-Maximilians-Universität München, Munich, Germany. |
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| Jazyk: | angličtina |
| Zdroj: | PeerJ [PeerJ] 2019 Nov 07; Vol. 7, pp. e7675. Date of Electronic Publication: 2019 Nov 07 (Print Publication: 2019). |
| DOI: | 10.7717/peerj.7675 |
| Abstrakt: | The traditional terminology of 'scythe' or 'sickle' shaped is observed to be flawed as an effective descriptor for pectoral fin shape in pachycormids. The diversity of pachycormid pectoral fin shapes is assessed across the 14 recognised genera that preserve complete pectoral fins, and improved terms are defined to more effectively describe their form, supported by anatomical observation and aspect ratio analysis of individual fins, and corroborated by landmark analysis. Three clear and distinct pectoral fin structural morphotypes emerge (falceform, gladiform, falcataform), reflecting a diversity of pachycormid lifestyles throughout the Mesozoic, from agile pursuit predator to slow-cruising suspension feeder. Competing Interests: Anthony Maltese is employed by Rocky Mountain Dinosaur Resource Center. (© 2019 Liston et al.) |
| Databáze: | MEDLINE |
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