Species
Protopanderodus calceatus Bagnoli et Stouge, 1997
Synonymy list
1978     Protopanderodus cf. varicostatus (Sweet & Bergström)  — Löfgren , pp. 91-93, fig. 3:26-31
1997     Protopanderodus calceatus n. sp. — Bagnoli & Stouge , pp. 154-156, fig. 8:13-19
2001     Protopanderodus calceatus Bagnoli & Stouge, 1997 — Rasmussen , pp. 122
2018     Protopanderodus calceatus  — Wu et al. 
Selection of related publications
Männik, P., Viira, V. 2012. Ordovician conodont diversity in the northern Baltic.  Estonian Journal of Earth Sciences   61,   1,   1-14.  Estonian Academy Publishers.  DOI:10.3176/earth.2012.1.01
Viira, V. 2011. Lower and Middle Ordovician conodonts from subsurface of SE Estonia and adjacent Russia.  Estonian Journal of Earth Sciences   60,   1,   1-21. DOI:10.3176/earth.2011.1.01
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Chordata | 
| Class | Conodonta | 
| Genus | Protopanderodus | 
| Species | calceatus | 
| graeai | |
| insculptus | |
| liripipus | |
| rectus | |
| robustus | |
| varicostatus | 
References based on distribution
- Männik & Viira, 2012 Billingen Stage