The placoderm fauna of the upper Famennian tetrapod-bearing locality of Strud, Belgium, includes the antiarch Grossilepis rikiki, the arthrodire groenlandaspidid Turrisaspis strudensis and the phyllolepidid Phyllolepis undulata. Based on morphological and morphometric evidence, the placoderm specimens from Strud are predominantly recognised as immature specimens and this locality as representing a placoderm nursery. The Strud depositional environment corresponds to a channel in an alluvial plain, and the presence of a nursery in such environment could have provided nutrients and protection to the placoderm offspring. This represents one of the earliest pieces of evidence for this sort of habitat partitioning in vertebrate history, with adults living more distantly from the nursery and using the nursery only to spawn or give live birth. ; The authors gratefully acknowledge the Belgian Federal Science Policy Office (https://www. belspo.be/) for the research financial support (Doctoral Fellow to S.O.) and the Jessup Fund (ANSP, Philadelphia, USA, http://www.ansp.org/ research/fellowships-endowments/jessup-mchenry/) for the funding provided to S.O. for the ANSP collection visit. V.D. was supported by P.E. Ahlberg’s European Research Council Advanced Investigator Grant 233111 (https://erc.europa.eu) and a Wallenberg Scholarship from the Knut and Alice Wallenberg Foundation (https://www.wallenberg.com/ kaw/en).