Special Papers in Palaeontology, published by The Palaeontological Association, is a series of substantial separate works conforming to the style of the Palaeontology journal. Two issues are published each year and feature high standard illustrations. Investigates the shell-rich Llandovery strata of the Anticosti ramp and presents the orthide brachiopods which reached their evolutionary diversity acme and abundance in the Ordovician Highlights the nine families of orthides which were lost at the end of the Ordovician, but discusses how some 16 families crossed the boundary (though mostly showing declines in the Silurian) Greatly expands the old locality register and enables the accurate placement of known and new species in a stratigraphic, evolutionary, as well as type locality framework Brings together researchers, geologists and enthusiasts who continue to find material of significance Includes 19 plates and 14 text-figures