How old is the Ordovician–Silurian boundary at Dob’s Linn, Scotland? Integrating LA-ICP-MS and CA-ID-TIMS U-Pb zircon dates Open Access

The first Early Ordovician graptolites and marine incursions in eastern Alborz, Iran Available to Purchase

Lenzograptus , a new name for the graptolite Lenzia Rickards and Wright, Available to Purchase

Ephemeral species in the fossil record? Synchronous coupling of macroevolutionary dynamics in mid-Paleozoic zooplankton Available to Purchase

Completeness of the known graptoloid palaeontological record Available to Purchase

Silurian Terrigenous-Carbonate Sedimentaion in Gorny Altai: Structure, Facies Variability, Faunal Assemblages, and Stratigraphic Position Available to Purchase

Silurian radiolarians from the Sepon Mine, Truong Son Terrane, central Laos and their palaeogeographic and tectonic significance Available to Purchase

Early Ordovician (Tremadocian and Floian) graptolites from the Than Sa Formation, northeast Vietnam Available to Purchase

The impact of geographic range, sampling, ecology, and time on extinction risk in the volatile clade Graptoloida Available to Purchase

Chitinozoan biostratigraphy of the Silurian Wenlock–Ludlow boundary succession of the Long Mountain, Powys, Wales Available to Purchase

Zonation of the Siberian Ordovician deposits based on pelagic groups of fauna Available to Purchase

Biostratigraphy and palaeoecology of Middle–Late Ordovician conodont and graptolite faunas of the Las Chacritas River section, Precordillera of San Juan, Argentina Available to Purchase

The new Ordovician stage standard as applied to the stratigraphic units of the western Altai–Sayan Folded Area Available to Purchase

Early Devonian graptolites and graptolite biostratigraphy, Arctic Islands, Canada Available to Purchase

Assessment of Hirnantian synglacial eustacy and palaeogeography in a tectonically active setting: the Welsh Basin (UK) Available to Purchase

Graptoloid evolutionary rates track Ordovician–Silurian global climate change Available to Purchase

Normalograptus kufraensis , a new species of graptolite from the western margin of the Kufra Basin, Libya Available to Purchase

A revised sedimentary and biostratigraphical architecture for the Type Llandovery area, Central Wales Available to Purchase

Polymorphic organization in a planktonic graptoloid (Hemichordata: Pterobranchia) colony of Late Ordovician age Available to Purchase

The late Aeronian graptolite sedgwickii Event, associated positive carbon isotope excursion and facies changes in the Prague Synform (Barrandian area, Bohemia) Available to Purchase