File:Leptonectes SW 1.png

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Summary

Description
English: Life restoration of the British Jurassic ichthyosaur Leptonectes tenuirostris. While known from multiple seemingly near-complete skeletons, many of these are unfortunately composites or partially reconstructed. This illustration is based primarily on OUMNH J.10305, which has not been figured in its entirety but for which a table of measurements has been published.[1][2] Unillustrated postcranial regions were primarily filled in with the "Leaping Leptonectes[2] and the aberrantly long-snouted NHMUK 36182.[3] For the forefins, SCM 8372 and NHMUK R1127 were also referred to for restoration.[2] The angle of the tail bend was based on ANSP 17307.[4] The soft tissue outline is based on a combination of Hauffiopteryx,[5] Stenopterygius,[6][7] and Aegirosaurus.[8]

References

  1. ↑ McGowan, C. (1990). "Problematic ichthyosaurs from southwest England: A question of authenticity". Journal of Vertebrate Paleontology 10 (1): 72-79.
  2. ↑ a b c McGowan, C. (1989). "Leptopterygius tenuirostris and other long-snouted ichthyosaurs from the English Lower Lias". Palaeontology 32 (2): 409–427.
  3. ↑ Owen, R. (1881). "A monograph of the fossil Reptilia of the Liassic formations. Part 3. Ichthyopterygia". Monograph of the Palaeontographical Society 35: 83-134.
  4. ↑ McGowan, C. (1989). "The ichthyosaurian tailbend: A verification problem facilitated by computed tomography". Paleobiology 15 (4): 429-436.
  5. ↑ Maxwell, E.E.; Cortés, D. (2020). "A revision of the Early Jurassic ichthyosaur Hauffiopteryx (Reptilia: Ichthyosauria), and description of a new species from southwestern Germany". Palaeontologia Electronica 23 (2): a31. DOI:10.26879/937.
  6. ↑ McGowan, C. (1973). "Differential growth in three ichthyosaurs : Ichthyosaurus communis, I. breviceps, and Stenopterygius quadriscissus (Reptilia, Ichthyosauria)". Life Science Contributions of the Royal Ontario Museum 93: 1-21.
  7. ↑ Eriksson, M.E.; De La Garza, R.; Horn, E.; Lindgren, J. (2022). "A review of ichthyosaur (Reptilia, Ichthyopterygia) soft tissues with implications for life reconstructions". Earth-Science Reviews 226: 103965. DOI:10.1016/j.earscirev.2022.103965.
  8. ↑ Bardet, N.; Fernández, M. (2000). "A new ichthyosaur from the Upper Jurassic lithographic limestones of Bavaria". Journal of Paleontology 74 (3): 503–511.
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Captions

Life restoration of ''Leptonectes''

Items portrayed in this file

depicts

Leptonectes tenuirostris

inception

14 February 2022

media type

image/png

File history

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Date/TimeThumbnailDimensionsUserComment
current16:18, 14 April 2023Thumbnail for version as of 16:18, 14 April 20232,446 × 857 (392 KB)Slate WeaselComplete overhaul
19:57, 13 May 2022Thumbnail for version as of 19:57, 13 May 20221,991 × 803 (305 KB)Slate WeaselColored
23:26, 5 May 2022Thumbnail for version as of 23:26, 5 May 20221,991 × 804 (339 KB)Slate WeaselSmoother edges, less demarcated chin
21:18, 15 March 2022Thumbnail for version as of 21:18, 15 March 20221,991 × 804 (338 KB)Slate WeaselUploaded own work with UploadWizard
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