Extended Data Fig. 5: Another possible leptomitid sponge, associated to the thin branching algae UCBL-FSL713607.
From: The Cabrières Biota (France) provides insights into Ordovician polar ecosystems
(a) Optical photograph under polarised light of the entire specimen. (b) Close-up view under polarised light from the box in (a) showing longitudinal skeletal elements. Scale bars represent 1 cm in (a), and 1 mm in (b).