Contributions to Zoology, 86 (4) – 2017Menno Schilthuizen; Rob Langelaan; Nicola Hemmings; Wesley van Oostenbrugge; Stefan Visser: An unexpected twist: Sperm cells coil to the right in land snails and to the left in song birds

To refer to this article use this url:

Online supplementary information

SI1. A list of all Pulmonata samples used.

SI2. Representative scanning electron micrographs of details of the sperm mass inside spermatophores for each of the Pulmonata samples in SI1.

SI3. A list of all Passeriformes samples used.

SI4. Scanning electron micrographs of representative sperm cells for each of the Passeriformes samples in SI3.