Length plotted against height of Grammatodon (Indogrammatodon) virgatus (J. de C. Sowerby, 1840) from the Callovian of Kachchh and G. (I.) egertonianus (Stoliczka, 1866) from the Spiti Shale Formation. Due to the distorted nature of nearly all specimens from the Spiti area, only two specimens yielded reasonable values.

 
 
  Part of: Fürsich FT, Alberti M, Pandey DK, Ayoub-Hannaa WS (2022) Jurassic bivalves from the Spiti area of the Himalayas, northern India. Zitteliana 96: 153-178. https://doi.org/10.3897/zitteliana.96.87253