PaleoDB taxon number: 156005
Alternative combination: Sauroidichnites tenuissimus
Synonym: Harpedactylus gracilis Hitchcock 1848 (taxon 156006)
Full reference: E. Hitchcock. 1837. Fossil footsteps in sandstone and graywacke. The American Journal of Sciences and Arts 32:174-176
- Harpedactylus tenuissimus: AC 27/8, a footprint. Its type locality is Wethersfield tracksite, which is in a Hettangian/Sinemurian fluvial-lacustrine shale/sandstone in the Portland Formation of Connecticut.
- Harpedactylus gracilis: Its type locality is below Turners Falls, tracksite, which is in a Hettangian/Sinemurian fluvial-lacustrine sandstone/shale in the Portland Formation of Massachusetts.