Reference health
Groenlandaspis in Antarctica, Australia and Europe
5/5 checkable references clean · checked 2026-08-25
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
17 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 5 checked references that resolve
resolves10.1007/BF02987891
Neuuntersuchung der Dolichothoraci aus dem Unterdevon von Overath bei Köln
resolves10.1017/S0080456800024078
IX.—The Placoderm Fish<i>Coccosteus cuspidatus</i>Miller ex Agassiz from the Middle Old Red Sandstone of Scotland. Part I. Descriptive Morphology
resolves10.1017/S0080456800014629
VI.—Features of Placoderm Diversification and the Evolution of the Arthrodire Feeding Mechanism.
The 17 references without a DOI — listed, not checked
no DOI — not checkedHeintz, A., Skr. Svalbard Ishavet, 42, 1–27 (1932).
no DOI — not checkedStensiö, E., Meddr. Gronland, 97, No. 1 (1934); No. 2 (1936); No. 3 (1939).
no DOI — not checkedMiles, R. S., Ark. Zool., 16 (2), 427–60 (1964).
no DOI — not checkedRitchie, A., Aust. Natur. Hist., 18, 28–35 (1974).
no DOI — not checkedWoodward, A. S., Br. Antarct. Terra Nova Exped. 1910, 1, 51–62 (1921).
no DOI — not checkedGunn, B. M., and Warren, G., Scient. Rep. Antarct. Exped., 10, 1–156 (1962).
no DOI — not checkedWhite, E. I., Scient. Rep., ibid. Antarct. Exped., 16, 1–26 (1968).
no DOI — not checkedMcKelvey, B. C., Webb, P. N., Gorton, M. P., and Kohn, B. P., in The Geology of Antarctica (edit. by Adie, R. J.), 345–352 (Universitetsforlaget, Oslo, 1972).
no DOI — not checkedRitchie, A., Aust. Natur. Hist., 17, 65–71 (1971).
no DOI — not checkedRade, J., J. Paleont., 38, 929–932 (1964).
no DOI — not checkedBaily, W. H., Explanation to accompany Sheets 147 and 157 of the maps of the Geological Survey of Ireland, 13–16 (1861).
no DOI — not checkedWoodward, A. S., Catalogue of the fossil fishes in the British Museum (Natural History), 2, 292, plate VIII, figs 1–4 (1891).
no DOI — not checkedCharlesworth, J. K., Historical Geology of Ireland, 180–4 (Oliver and Boyd, Edinburgh, 1963).
no DOI — not checkedRitchie, A., Palaeontographica, A 143, 58–72 (1973).
no DOI — not checkedDenison, R. H., Fieldiana, Geol., 11, 459–551 (1958).
no DOI — not checkedObruchev, D. V., Fundamentals of Palaeontology. Class Placodermi XI (English translation), 197–200 (Israeli Program for Scientific Translations, Jerusalem, 1967).
no DOI — not checkedMiles, R. S., Phil. Trans. R. Soc., 263, 101–234 (1971).
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