Published December 31, 2003 | Version v1
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FIG. 4 in A new species of Atlantidosteus Lelièvre, 1984 (Placodermi, Arthrodira, Brachythoraci) from the Middle Devonian of the Broken River area (Queensland, Australia)

Authors/Creators

  • 1. Geology Department, Australian National University, Canberra, ACT 0200 (Australia) gyoung@geology.anu.edu.au .

Description

FIG. 4. — Homostius spp.; A, B, left suborbital plate (external and internal views); C-E, left postorbital plates, of H. arcticus Heintz, 1934 (C), H. latus Asmuss, 1856 (D) and H. milleri Traquair, 1888 (E). (Modified from Heintz 1934: figs 22, 23, 50). Abbreviations: a, c, d, limits to the external surface of the suborbital plate identified by Heintz (1934); fl, ventral unornamented flange; gr, groove; oaC, area overlapped by central plate of skull roof; oaM, area overlapping or overlapped by marginal plate of skull roof; oaPrO, area overlapped by preorbital plate of skull roof; oaPtO+M, area overlapped by postorbital and marginal plates; R1, 3, 4, internal ridges on the suborbital plate identified by Heintz (1934); so.la, suborbital lamina; so.pr, suborbital process of postorbital plate. Scale bars: A, B, D, 5 cm; C, E, 3 cm.

Notes

Published as part of Young, Gavin C., 2003, A new species of Atlantidosteus Lelièvre, 1984 (Placodermi, Arthrodira, Brachythoraci) from the Middle Devonian of the Broken River area (Queensland, Australia), pp. 681-694 in Geodiversitas 25 (4) on page 688, DOI: 10.5281/zenodo.4650651

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Is cited by
Taxonomic treatment: http://treatment.plazi.org/id/3D5187B5AB2259012B70FE32A58A8AAF (URL)
Is part of
Journal article: 10.5281/zenodo.4650651 (DOI)
Journal article: urn:lsid:plazi.org:pub:C168FFCDAB2159092849FFB9A4578E2A (LSID)
Journal article: http://publication.plazi.org/id/C168FFCDAB2159092849FFB9A4578E2A (URL)