ðɪs kˈɑːmplɛks nˈɛtwɜːk ʌv klˈoʊzd kənˈælz wɪðˌɪn ðə dˈɜːməl plˈeɪts ɪz θˈɔːt təbi ɐ dᵻɹˈaɪvd tɹˈeɪt nˈoʊn ɪn vˈɛɹi fjˈuː sˈæmoʊstˌeɪdz ænd ɑːɹ kˌæɹɪktɚɹˈɪstɪkli sɪmˈɛtɹɪkəl ɪn ɚɹˈeɪndʒmənt, ˈɔfən lˈiːdɪŋ tə ðə sˈɜːfɪs baɪ pˈoːɹz.
This complex network of closed canals within the dermal plates is thought to be a derived trait known in very few Psammosteids and are characteristically symmetrical in arrangement, often leading to the surface by pores.