Habelia optata Fossil Specimen (image) University of Toronto Share Print E-Mail Caption Fossil specimen of Habelia optata from the Royal Ontario Museum. This specimen spectacularly shows some of the very large jaws under the head shield. Note also the long dorsal spines on the thorax. Credit Photo by Jean-Bernard Caron. Copyright: Royal Ontario Museum Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.