Species
Placosteus undulatus (Agassiz, 1844)
Synonymy list
1833 Placosteus undulatus — Agassiz , pp. XXXIII
1844 Psammostes undulatus (Agassiz) — Agassiz , pp. 106 , fig. 31:11, 12
1860 Psammostes undulatus Agassiz — Eichwald , pp. 1517-1518(pars)
1891 Psammostes undulatus Agassiz — Woodward , pp. 128
1897 Psammosteus tesselatus n. sp. — Traquair , pp. 377 , fig. Xi 1,2
1930 Psammosteus arenatus Agassiz — Gross , pp. 13
1933 Psammolepis undulata (Agassiz) — Gross , pp. 8-9 , fig. 1:3, 6
1933 Psammolepis undulata Agass. — Gross , pp. 8-9 , fig. I 3(?), 9
1942 Psammolepis undulata Agass. — Gross , pp. 410 , fig. 2A
1958 Psammolepis timanica Obr: nomen nudum — Obruchev , pp. 48
1961 Psammolepis undulata (Agass.) — Tarlo , pp. 202 , fig. VII 4, 52
1965 Psammolepis undulata (Agassiz, 1845) — Halstead Tarlo , pp. 103 , fig. XVII 2, text fig. 32
1965 Psammolepis undulata (Agassiz, 1845) — Obruchev & Mark-Kurik , pp. 201 , fig. 56:1,2; 57:1,2; 58:1-3; 59:1-2; 60:1-3; 61:1
1971 Psammolepis undulata Agassiz, 1845 — Lyarskaya , pp. 98 , fig. 3-5
2000 Psammolepis undulata (Ag.) — Mark-Kurik , pp. 317
2000 Psammolepis undulata (Ag.) — Esin et al. , pp. 345
2001 Psammolepis undulata (Agassiz, 1845) — Lukševičs , pp. 498
2004 Psammolepis undulata (Agassiz, 1845) — Novitskaya , pp. 187 , fig. 122, 123
Selection of related publications
Tuuling, T. 2015. A specimen of Psammolepis in the Gauja Formation (Estonia).bakalaureusetöö , pp. 1-31.
Mark-Kurik, E. 2000. The Middle Devonian fishes of the Baltic States (Estonia, Latvia) and Belarus. Courier Forschungsinstitut Senckenberg 223, 309-324.
Vorobyeva, E. I., Lyarskaya, L. A. 1968. Ostatki kisteperyh i dvoâkodyšaŝih iz amatskih sloev Latvii i ih zahoronenie.Очерки по филогении и систематике ископаемых рыб и бесчелюстных , pp. 71-86. Nauka.
Obruchev, D. V., Mark-Kurik, E. J. (eds) 1965. Devonian psammosteids (Agnatha, Psammosteidae) of the USSR. pp. 1-304. Eesti NSV TA Geoloogia Instituut.
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Superclass | Agnatha |
| Class | Pteraspidomorphi |
| Subclass | Heterostraci |
| Order | Pteraspidiformes |
| Suborder | Psammosteida |
| Family | Psammosteidae |
| Subfamily | Placosteinae |
| Genus | Placosteus |
| Species | alatus |
| undulatus |
References based on distribution
- Mark-Kurik, 2000a Amata Stage
- Mark-Kurik, 2000a Gauja Stage
- Vorobyeva & Lyarskaya, 1968 Pasta muiža outcrop, Latvia Amata Stage