Species
Psammosteus praecursor Obruchev, 1947
Synonymy list
1942     Psammosteus meandrinus Agassiz — Gross , pp. 386-387, 390, 411,pars
1947     Psammosteus praecursor n. sp. — Obruchev , pp. 519, fig. 1,2
1950     Psammosteus meandrinus Agassiz — Gross , pp. 24,29
1965     Psammosteus praecursor Obruchev, 1947 — Obruchev & Mark-Kurik , pp. 228, fig. 67:1-5; 68:1-4;69:1-2;  72:1,4;76:1
1965     Psammosteus praecursor Obruchev, 1947 — Halstead Tarlo , pp. 127-131, fig. text fig. 38-40
1968     Psammosteus praecursor — Vorobyeva & Lyarskaya , pp. 72
2000     Psammosteus praecursor Obr. — Mark-Kurik , pp. 317
2001     Psammosteus praecursor Obruchev, 1947 — Lukševičs , pp. 498
2004     Psammosteus praecursor Obruchev, 1947 — Novitskaya , pp. 190, fig. 125
2016     Psammosteus praecursor Obruchev, 1947 — Glinskiy & Mark-Kurik , pp. 5
Selection of related publications
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.  Essays on phylogeny and systematics of fossil fishes and agnathans, pp. 71-86.   Nauka. 
Mark-Kurik, E. 1968. New finds of psammosteids (Heterostraci) in the Devonian of Estonia and Latvia.  Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология   17,   4,   409-424. DOI:10.3176/chem.geol.1968.4.11
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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 | Psammosteinae | 
| Genus | Psammosteus | 
| Species | asper | 
| bergi | |
| bystrowi | |
| cuneatus | |
| falcatus | |
| kiaeri | |
| levis | |
| livonicus | |
| maeandrinus | |
| megalopteryx | |
| praecursor | |
| tchernovi | |
| tenuis | |
| waltergrossi | 
References based on distribution
- Mark-Kurik, 2000a Amata Stage
- Vorobyeva & Lyarskaya, 1968 Pasta Muiža outcrop, Daugava River Amata Stage