1. Bassoullet et al (1983) have published a comprehensive review of ancient udoteacean algae. The references listed below include only those papers mentioned in the paper as well as some new papers important for the paleontological inventory of Halimeda forerunners
2. Badve RM, Nayak KK (1983) Occurrence and significance of the algal genus Halimeda from Nimar Sandstone, Bagh Beds, Jhabua District, M.P. Biovigyanam 9:137?148
3. Bassoullett JP, Bernier P, Deloffre R, Genot P, Poncet J, Roux A (1983) Les Algues Udoteacées du Paléozoique au Cénozoique. Bull Centre Rech Explor Prod Elf-Aquitaine 7:449?621
4. Brandner R, Resch W (1980) Collarecodium oenipontanum n.g. n.sp.-eine neue Kalkalge aus dem Wettersteinkalk (Ladin-Cordevol; Trias) der Innsbrucker Nordkette/Tirol. Ann Naturhist Mus Wien 83:35?48
5. Chapman F, Mawson D (1906) On the importance of Halimeda as reefforming organisms with a description of the Halimeda limestone of the New Hebrides. Q J Geol Soc London 62:702