Collastoma esotericum (Neodalyellida: Umagillidae), a new species of sipunculan-inhabiting rhabdocoel from Queensland, Australia

Dendrochirotida (Echinodermata: Holothuroidea) from the northeastern coast of Brazil

A revision of the unusual feather star genus Atopocrinus with a description of a new species (Echinodermata: Crinoidea)

Erratum: JOHN M. LAWRENCE, JANESSA C. COBB, JOAN C. HERRERA, ALICIA DURÁN-GONZÁLEZ & FRANCISCO ALONSO SOLÍS-MARÍN  (2018) Morphological comparison of Astropecten cingulatus and a new species of Astropecten (Paxillosida, Astropectinidae) from the Gulf of Mexico. Zootaxa, 4407: 086–100.

Intestinal ciliates (Alveolata, Ciliophora) in Brazilian domestic horses (Equus caballus L.) and a review on the ciliate communities associated with horses around the world

Reassessment of the classification of the Ophiuroidea (Echinodermata), based on morphological characters. I. General character evaluation and delineation of the families Ophiomyxidae and Ophiacanthidae

Revision of the pentacrinid stalked crinoids of the genus Endoxocrinus (Echinodermata, Crinoidea), with a study of environmental control of characters and its consequences for taxonomy

The East Pacific/South Pacific Boundary: New taxa and occurrences from Rapa Nui (Easter Island), New Caledonia and adjacent regions