Species
Placosteus alatus (Mark-Kurik, 1965)
Type specimen data
Synonymy list
1965     Psammolepis alata Mark-Kurik, n. sp. — Obruchev & Mark-Kurik , pp. 184, fig. 46:3; 47:1,2; 48:1-3; 49:1,2
1965     Psammolepis alata Obruchev, 1965 — Halstead Tarlo , pp. 184, fig. text fig. 35
1971     Psammolepis alata Mark-Kurik, 1965 — Lyarskaya , pp. 101, fig. 7-9
2000     Psammolepis alata Mark-Kurik — Mark-Kurik , pp. 317
2000     Psammolepis alata Mark-Kurik — Esin et al. , pp. 345
2001     Psammolepis alata Mark-Kurik, 1965 — Upeniece , pp. 103
2004     Psammolepis alata Mark-Kurik, 1965 — Novitskaya , pp. 185, fig. 116, 117
2018     Placosteus alatus (Mark-Kurik, 1965), comb. nov. — Glinskiy , pp. 231
Selection of related publications
Lebedev, O. A., Mark-Kurik, E., Karatajūtė-Talimaa, V. N., Lukševičs, E., Ivanov, A. 2009. Bite marks as evidence of predation in early vertebrates.  Acta Zoologica   90,   Suppl. 1,   344-356. DOI:10.1111/j.1463-6395.2008.00344.x
Upeniece, I. 2001. The unique fossil assemblage from the Lode Quarry (Upper Devonian, Latvia).  Mitteilungen aus dem Museum für Naturkunde der Humboldt-Universität in Berlin      4,   101-119. DOI:10.5194/fr-4-101-2001
Mark-Kurik, E. 2000. The Middle Devonian fishes of the Baltic States (Estonia, Latvia) and Belarus.  Courier Forschungsinstitut Senckenberg    223,      309-324.
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 Gauja Stage
- Upeniece, 2001 Lode quarry Gauja Stage