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Despite rapid advances in the study of metazoan evolutionary history , phylogenomic analyses have so far neglected a number of… Expand In spite of the high relevance of lumbricid earthworms (‘Oligochaeta’: Lumbricidae) for soil structure and functioning, the… Expand Ecdysozoa is the recently recognized clade of molting animals that comprises the vast majority of extant animal species and the… Expand We sequenced and annotated the complete mitochondrial (mt) genome of the priapulid Priapulus caudatus in order to provide a… Expand SummaryBased on new SEM and TEM observations, the arrangement and ultrastructure of the scalids and adhesive tubuli of the larvae… Expand Priapulids possess a radial symmetry that is remarkably reflected in both external morphology and internal anatomy. It results in… Expand Triploblastic relationships were examined in the light of molecular and morphological evidence. Representatives for all… Expand Long-term anaerobiosis was studied in the priapulid Haljcryptus spinulosus and the bivalves Astarte borealis and Arctica island… Expand CONTENTS 1 Introduction 4 1.1 Plan 4 1.2 Material and methods 5 1.3 Acknowledgements 6 2 Systematics 8 2.1 Historical… Expand INTRODUCTION Two years ago I found two specimens of a curious animal in a sample of coral sand from Curacao. It superficially… Expand