Caleschara lithconis is found from the Late Eocene (Priabonian) of southeastern Australia.
Original description: Caleschara lithconis Cook & Bock, 2001
Locality: Browns Creek, near Cape Otway, Victoria Australia.
Holotype: NMV P147755
Reference: Cook, Patricia L., & Bock, Philip E., 2001.
Calescharidae, a new family for the Tertiary to Recent genera Caleschara MacGillivray and Tretosina Canu & Bassler (Bryozoa: Cheilostomata).
Invertebrate Taxonomy, 15: 527-550.