What's the difference between devonian and permian?
Devonian
Definition:
(a.) Of or pertaining to Devon or Devonshire in England; as, the Devonian rocks, period, or system.
(n.) The Devonian age or formation.
Example Sentences:
(1) Modern lungfish are air-breathing nonmarine forms, yet their Devonian forebears were marine fish that did not breathe air.
(2) The Siluro-Devonian "explosive" colonization of land, and indeed the very evolution of plants, was possible only through such mutualistic partnerships-partnerships that were equipped to cope with the problems of desiccation and starvation associated with terrestrial existence.
(3) The diversity of tetrapods increased from the Devonian to the Permian, remained roughly constant during the Mesozoic, and then began to increase in the late Cretaceous, and continued to do so during the Tertiary.
(4) Sharks are living fossils that are indistinguishable morphologically from their Devonian ancestors of approximately equal to 400 million years ago.
(5) Photograph: University Museum of Zoology Cambridge “It does appear that if there had been a ‘gap’ it was much smaller than previously thought, and might have affected some groups less severely than others,” Clack told me, talking about the disappearance of many species at the end of the Devonian.
(6) This period marks the end of the Devonian, often referred to as the “age of fish”, and the beginning of the Carboniferous.
(7) – Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous … 'What will survive of us is love', wrote Philip Larkin.
(8) The dental plates of the Devonian lungfish Chirodipterus australis Miles (Osteichthyes; Dipnoi) are shown to have achieved their characteristic morphology by a growth process different from that assumed for the plates of genera such as Dipterus.
(9) Recent work on Silurian, Devonian and Carboniferous terrestrial assemblages has provided plausible evidence for all major groups of extant fungi in the Paleozoic.
(10) Fossils dating from the time of origin of tetrapods in the Devonian offer the only hope of understanding the morphological innovations that led to tetrapods; morphological analysis of the "living fossils," the coelacanth and lungfish, only lends confusion.
(11) Here I report the discovery of the stapes of Acanthostega gunnari, from the Upper Devonian of east Greenland.
(12) Late Devonian, c 360 million years ago A messy prolonged climate change event, again hitting life in shallow seas very hard, killing 70% of species including almost all corals.
(13) Evolution of life coincides with the most rapid rate of rise in atmospheric oxygen concentration during Devonian time.
(14) Morphologically, sharks are living fossils that are remarkably similar to their Devonian ancestors of ca.
(15) These, together with the marginal teeth and ridges, have been interpreted as primitive characters of the dipnoan dentition shared with three other genera: the Devonian Uranlophus and Griphognathus and the Carboniferous to Permian Conchopoma.
(16) Devonian vertebrates include a wide range of endemic forms, which provide evidence of more than six distinct biostratigraphic assemblages in South China and five biogeographical realms.
(17) The 51-year-old Devonian mother of two was being wooed by Harold Tillman, the retail magnate who had recently bought the historic British Jaeger clothing brand, over a series of high teas at Claridge's.
(18) Further comparison of the results with similar experimental findings in members of other vertebrate classes supports the notion that several of these same pathways can be traced to even more remote ancestry, with some possibly as old as the entire vertebrate subphylum--dating from the early Devonian or before, perhaps 430 million years ago.
(19) The spatial arrangement of the vertical canals is already present in fossil ostracoderms, and is also exemplified in lampreys, the modern forms of once abundant agnathan species that populated the Silurian and Devonian oceans.
(20) A review of the vertebrates within the Silurian and Devonian of China suggests a more detailed picture of palaeobiogeographical distribution than previously possible.
Permian
Definition:
(a.) Belonging or relating to the period, and also to the formation, next following the Carboniferous, and regarded as closing the Carboniferous age and Paleozoic era.
(n.) The Permian period. See Chart of Geology.
Example Sentences:
(1) The diversity of tetrapods increased from the Devonian to the Permian, remained roughly constant during the Mesozoic, and then began to increase in the late Cretaceous, and continued to do so during the Tertiary.
(2) Therapsids, first appearing in the Early Permian, were thought to become extinct in the Middle Jurassic, soon after the Late Triassic origin of mammals.
(3) Permian-Triassic, c 250 million years ago The big one – more than 95% of species perished, including trilobites and giant insects – strongly linked to massive volcanic eruptions in Siberia that caused a savage episode of global warming.
(4) The fossil horizon is only 76 meters, stratigraphically, above the Glossopteris-bearing Buckley Formation, a coal-bearing sequence of Permian age.
(5) – Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous … 'What will survive of us is love', wrote Philip Larkin.
(6) Although it is the earliest and most primitive reptile yet known, it is probably already too late and too specialized to be ancestral to the more advanced Carboniferous and Permian captorhinomorphs and pelycosaurs.
(7) The greatest of all was 250m years ago at the end of the Permian period, when 96% of all species were wiped out.
(8) Major mass extinctions among tetrapods took place in the early Permian, late Permian, early Triassic, late Triassic, late Cretaceous, early Oligocene and late Miocene.
(9) 3 Permian-Triassic mass extinction, c 250 million years ago.
(10) These, together with the marginal teeth and ridges, have been interpreted as primitive characters of the dipnoan dentition shared with three other genera: the Devonian Uranlophus and Griphognathus and the Carboniferous to Permian Conchopoma.
(11) I think of that configuration of berm, chamber, shaft, disc and hot cell – all set atop the casks of pulsing radioactive molecules entombed deep in the Permian strata – as perhaps our purest Anthropocene architecture.
(12) Being of very ancient lineage, schistosomes, which evolved from blood flukes during the Permian era, had two hundred million years of evolution to their advantage, to perfect their survival strategies.