Fossils of extinct sea snails or the Silurian
Fossils of extinct sea snails or the Silurian to Permian eras.. Handcolored lithograph from Dr. F.A. Schmidt's Petrefactenbuch, published in Stuttgart, Germany, 1855 by Verlag von Krais & Hoffmann. Dr. Schmidt's Book of Petrification introduced fossils and palaeontology to both the specialist and general reader.
© Florilegius / Mary Evans
This specimen dates from the Middle Silurian, Worcestershire. Trilobites are among the earliest fossils known and ranged from the Lower Cambrian (540 million years ago) to the Lower Permian (c.285 million years ago). Date:
© Mary Evans / Natural History Museum
Ancient, Animal, Animals, Arthropod, Arthropoda, Articulated, Calymene, Calymenidae, England, Europe, European, Exoskeleton, Fossil, Fossilised, Great Britain, Invertebrata, Invertebrate, Lower, Middle, One, Paleozoic, Permian, Phacopida, Phanerozoic, Prehistoric, Silurian, Trilobita, Trilobite, Trilobitomorpha, Worcestershire