Species
Orthis callactis Dalman, 1828
Type specimen data
RM Br21959 , ( Husbyfjöl, Östergötland, Sweden ) ( Kunda Stage, Hunderum Substage; Darriwilian )
Synonymy list
1828 Orthis callactis sp. nov. — Dalman , pp. 112 , fig. 2; 2
1830 Orthis crassicosta sp. nov. — Pander , pp. 82 , fig. 21; 1
1953 Orthis callactis Dalman 1828 — Alikhova , pp. 28-30 , fig. 1; 13-16
1961 Orthis callactis (?) Dalman, 1828 — Rubel , pp. 172-173 , fig. 14; 16, 17
1993 Orthis callactis Dalman 1828 — Jaanusson et Bassett , pp. 54-56 , fig. 8: 1-8
Selection of related publications
Rubel, M. P. 1961. Lower-Ordovician brachiopods of the superfamilies Orthacea, Dalmanellacea and Syntrophiacea of Eastern Baltic. ENSV TA Geoloogia Instituudi uurimused VI, 141-226.
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Orthida |
| Suborder | Orthidina |
| Superfamily | Orthoidea |
| Family | Orthidae |
| Genus | Orthis |
| Species | callactis |