Mesophyllum sp.

Dey, Rikee, Basso, Daniela, Chakraborty, Arindam, Roy, Lopamudra, Bhaumik, Ajoy Kumar & Ghosh, Amit K., 2023, Rhodolith-forming coralline red algae in the CaCO biofactory - A case study from the Serravallian of tropical northeastern Indian Ocean, Comptes Rendus Palevol 22 (26), pp. 541-567 : 546

Mesophyllum sp.

( Fig. 3E)

DESCRIPTION

Growth form encrusting to warty, thallus measures 1141- 1322 µm in length and 600-715 µm in thickness, monomerous. Cells of the VC are coaxial, more or less rectangular in shape and measures 12 to 24 µm in length and 6 to 10 µm in diameter ( Table 1). Cells of the PF are 8 to 25 µm in length and 6 to 20 µm in diameter ( Table 1). A wavy zonation is present in the PF. Cell fusions clearly discernible both in the VC and PF. Epithallial cells not clearly visible.

REMARKS

Based on the presence of cell fusions both in VC and PF, zonations in the PF and monomerous thallus with coaxial VC the specimen is confidently assigned to the genus Mesophyllum . The vegetative anatomical features and growth form recall Mesophyllum curtum Lemoine , re-described from the Tortonian of Algeria ( Aguirre & Braga 1998) and from the Langhian of southern Moravia, Carpathian Foredeep, Czech Republic ( Hrabovský et al. 2015).