Selected features of Notaulax nigroincrustata sp. n. A–E) Collar, different shapes, ventral view, F) sclerezoan worm inside a calcium carbonate matrix, G) base of radiolar crown and peristomium, lateral view, H) abdominal shields. Scale bars: A) 0.65 mm, B) 1 mm, C–D) 1 mm, E) 1.3 mm, F) 2.2 mm, G) 0.75 mm, H) 1 mm. Abbreviations: apr) anterior peristomial ring, df) dorsal flange. A) UANL 8138 holotype, B–H) UANL 8140 paratypes.

 
  Part of: Tovar-Hernández MAA, García-Garza ME, de León-González JA (2020) Sclerozoan and fouling sabellid worms (Annelida: Sabellidae) from Mexico with the establishment of two new species. Biodiversity Data Journal 8: e57471. https://doi.org/10.3897/BDJ.8.e57471