Poinar, G. (2003). “A Rhabdocoel Turbellarian (Platyhelminthes, Typhloplanoida) in Baltic Amber with a Review of Fossil and Sub-Fossil Platyhelminths”. Invertebrate Biology. 122 (4): 308–312. doi:10.1111/j.1744-7410.2003.tb00095.x. JSTOR3227067.
jstor.org
Poinar, G. (2003). “A Rhabdocoel Turbellarian (Platyhelminthes, Typhloplanoida) in Baltic Amber with a Review of Fossil and Sub-Fossil Platyhelminths”. Invertebrate Biology. 122 (4): 308–312. doi:10.1111/j.1744-7410.2003.tb00095.x. JSTOR3227067.