Genus
Trigrammaria Wilson, 1945
Selection of related publications
Rõõmusoks, A. 2004. Ordovician strophomenoid brachiopods of northern Estonia.  Fossilia Baltica 3, pp. 1-151.   Tartu Ülikooli geoloogia Instituut. 
Rõõmusoks, A. 1985. The genera Trigrammaria and Microtrypa (Strophomenidae) in the Ordovician of Baltoscandia.  Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология   34,   4,   133-140. DOI:10.3176/geol.1985.4.03
List of species
1. Trigrammaria estonica (Rõõmusoks, 1985) | Rakvere Stage
2. Trigrammaria minima (Rõõmusoks, 1985) | Oandu Stage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Strophomenata | 
| Order | Strophomenida | 
| Superfamily | Strophomenoidea | 
| Family | Strophomenidae | 
| Subfamily | Furcitellinae | 
| Genus | Bekkerina | 
| Bellimurina | |
| Crassoseptaria | |
| Dactylogonia | |
| Geniculina | |
| Haljalanites | |
| Katastrophomena | |
| Kukrusena | |
| Luhaia | |
| Oepikina | |
| Oslomena | |
| Panderites | |
| Pentlandina | |
| Sakunites | |
| Tallinnites | |
| Titanomena | |
| Trigrammaria | |
| Species | estonica | 
| minima | 
 See also