Figure 3. A, Bunodes lunula d in Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura
| Main Author: | Lamsdell, James C. |
|---|---|
| Format: | info Image Journal |
| Terbitan: |
, 2012
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5292237 |
Daftar Isi:
- Figure 3. A, Bunodes lunula d'Eichwald, 1854 from the late Silurian (Ludlow) of Oesel, Estonia. Specimen ELM G1:262:2, clearly showing the partially reduced pre-opercula tergite of somite VII (arrowed) between the downturned carapace and the hypertrophied tergite of somite VIII. Scale bar = 10 mm. B, 'Eurypterus' stoermeri Novojilov, 1959, a chasmataspidid from the early Devonian (Lochkovian) of Siberia, Russia. Specimen PIN 1138-1, exhibiting the microtergite of somite VII (arrowed) positioned between the carapace and the buckler. The microtergite curves anteriorly towards its lateral edges, and is particularly noticeable on the left-hand side. The occurrence of ridges associated with the lateral eye on the carapace is also labelled. Image courtesy of Dave Marshall. Scale bar = 2 mm.
- Published as part of Lamsdell, James C., 2013, Revised systematics of Palaeozoic 'horseshoe crabs' and the myth of monophyletic Xiphosura, pp. 1-27 in Zoological Journal of the Linnean Society 167 (1) on page 7, DOI: 10.1111/j.1096-3642.2012.00874.x, http://zenodo.org/record/5292231