- spiriferid
- spi·rif·er·id
English syllables. 2014.
spiriferid
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spiriferid — noun see spirifer 2 … Useful english dictionary
Taxonomy of commonly fossilised invertebrates — Although the phylogenetic classification of sub vertebrate animals (both extinct and extant) remains a work in progress, the following taxonomy attempts to be useful by combining both traditional (old) and new (21st century) paleozoological… … Wikipedia
Jurassic Period — Interval of geologic time, 206–144 million years ago, that is one of the three major divisions of the Mesozoic Era, preceded by the Triassic Period and followed by the Cretaceous. During the Jurassic, Pangea began to break up into the present day … Universalium
Carboniferous — For the album by Zu see Carboniferous (album). Carboniferous Period 359.2–299 million years ago … Wikipedia
Devonian — For the Celtic language, see Southwestern Brythonic language; for the residents of the English county, see Devon. Devonian Period 416–359.2 million years ago … Wikipedia
Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… … Wikipedia
Ordovician — Period 488.3–443.7 million years ago … Wikipedia
Ishbel Group — Stratigraphic range: Permian … Wikipedia
Great Ordovician Biodiversification Event — The Great Ordovician Biodiversification Event (GOBE or Ordovician radiation) was a diversification of animal life throughout[1] the Ordovician period, just 40 million years after the Cambrian explosion,[2] whereby the distinctive Cambrian fauna… … Wikipedia
