Early Silurian (Late Llandovery) rugose corals from western North Greenland

Early Silurian (Llandovery) Trilobite fauna from

The aim of this study is to analyze the assemblage of trilobites in the Silurian sequences of Iran by exploring stratigraphic section of the Silurian Niur Formation (Asadli section).  Based on comprehensive field studies and laboratory investigations three Trilobite genera were identified in the study area including Calymene blumenbachii, Gravicalymene convolva, Dalmanites brevigladiolus </...

Alborziphyllinae, A New Late Devonian Rugose Corals Subfamily

Members of the family Laccophyllidae are small, solitary rugose corals with stratigraphic ranges from Silurian to Permian. Among the laccophyllids, axial ends of major septa are united in an aulos and dissepiments may be absent or present. Minor septa can be contratingent and sometimes are small or in some genera are absent. Septa and aulos may be thick or thin. In this study, Famennian rugose...

alborziphyllinae, a new late devonian rugose corals subfamily

members of the family laccophyllidae are small, solitary rugose corals with stratigraphic ranges from silurian to permian. among the laccophyllids, axial ends of major septa are united in an aulos and dissepiments may be absent or present. minor septa can be contratingent and sometimes are small or in some genera are absent. septa and aulos may be thick or thin. in this study, famennian rugose ...

Precious Corals (Coralliidae) from North-Western Atlantic Seamounts

The magnitude and duration of Late Ordovician-Early Silurian glaciation.

Understanding ancient climate changes is hampered by the inability to disentangle trends in ocean temperature from trends in continental ice volume. We used carbonate "clumped" isotope paleothermometry to constrain ocean temperatures, and thereby estimate ice volumes, through the Late Ordovician-Early Silurian glaciation. We find tropical ocean temperatures of 32° to 37°C except for short-lived...