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Kainops
''Kainops'' is a genus of trilobites from the family Phacopidae, order Phacopida. It can be distinguished from ''Paciphacops'' by the greater number of facets to the eye (6–8 per row, compared to 3–4 in ''Paciphacops''). The form of the furrow between the palpebral area and the palpebral lobe also distinguishes ''Kainops'' from the genera ''Paciphacops'' and ''Viaphacops''. Species included in the genus are: *''Kainops chlupaci'' Budil & Kolář, 2004 *''Kainops ekphymus'' (Jones ''et al.'', 1986) *''Kainops guttulus'' (Campbell 1967) *''Kainops invius'' (Campbell 1977) *''Kainops microps'' (Chatterton, Johnson and Campbell, 1979) *''Kainops raymondi'' (Delo 1935) *''Kainops veles'' (Chlupac 1972) References Phacopidae Extinct animals of North America Devonian trilobites Phacopida genera Fossil taxa described in 1991 {{trilobite-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kainops Invius
''Kainops'' is a genus of trilobites from the family Phacopidae, order Phacopida. It can be distinguished from '' Paciphacops'' by the greater number of facets to the eye (6–8 per row, compared to 3–4 in ''Paciphacops''). The form of the furrow between the palpebral area and the palpebral lobe also distinguishes ''Kainops'' from the genera ''Paciphacops'' and '' Viaphacops''. Species included in the genus are: *''Kainops chlupaci ''Kainops'' is a genus of trilobites from the family Phacopidae, order Phacopida. It can be distinguished from ''Paciphacops'' by the greater number of facets to the eye (6–8 per row, compared to 3–4 in ''Paciphacops''). The form of the furro ...'' Budil & Kolář, 2004 *'' Kainops ekphymus'' (Jones ''et al.'', 1986) *'' Kainops guttulus'' (Campbell 1967) *'' Kainops invius'' (Campbell 1977) *'' Kainops microps'' (Chatterton, Johnson and Campbell, 1979) *'' Kainops raymondi'' (Delo 1935) *'' Kainops veles'' (Chlupac 1972) References Phaco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paciphacops
''Paciphacops'' is a genus of trilobites within order Phacopida, suborder Phacopina. This genus is found primarily in the United States and Australia and is easily mistaken for the genera ''Phacops'' and ''Kainops'', which are also popular among collectors. One major difference between ''Paciphacops'' and ''Phacops'' is that the central raised area (or glabella) of the headshield (or cephalon Cephalon, Inc. was an American biopharmaceutical company co-founded in 1987 by pharmacologist Frank Baldino Jr., Frank Baldino, Jr., neuroscientist Michael Lewis, and organic chemist James C. Kauer—all three former scientists with the DuPont ...) extends beyond the headshield's anterior margin. A major difference between ''Paciphacops'' and ''Kainops'' is the greater number of eye facets in ''Kainops''. The skin (or sclera) of the visual surface in ''Paciphacops'' is thickened and bulged compared to the edge of each lens. Species A subset of the currently valid species of ''Paciphac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phacopidae
Phacopidae is a family (biology), family of Phacopida, phacopid trilobites that ranges from the Lower Ordovician to the Upper Devonian, with representatives in all Supercontinents, paleocontinents. Description As in all Phacopina, the eyes (if present) consist of very large (0.5 mm in ''Phacops rana''), separately set lenses without a common cornea (so called Trilobite#Eyes, schizochroal eyes). However, several phacopids have very few lenses, such as the species of the genus, genera ''Cryphops'', ''Denckmannites'', ''Dienstina'', ''Eucryphops'', ''Nephranops'', and ''Plagiolaria'', or lack eyes altogether, like ''Afrops'', ''Dianops'', ''Ductina'', and ''Trimerocephalus''. The natural fracture lines (sutures) of the head run along the top edges of the compound eye. From the back of the eye these cut to the side of the head (Trilobite#Dorsal sutures, proparian) and not to the back. In front of the eye, the right and left facial sutures connect in front of the inflated glabel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lochkovian
The Lochkovian is one of three faunal stages in the Early Devonian Epoch. It lasted from 419.2 ± 3.2 million years ago to 410.8 ± 2.8 million years ago. It marked the beginning of the Devonian Period, and was followed by the Pragian Stage. It is named after the village of Lochkov in the Czech Republic, now part of the city of Prague. The GSSP is located within the Lochkow Formation at the Klonk Section in Prague. In North America the Lochkovian Stage is represented by Gedinnian or Helderbergian time. References Lochkovian, Early Devonian {{geochronology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devonian Trilobites
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian period at million years ago (Megaannum, Ma), to the beginning of the succeeding Carboniferous period at Ma. It is the fourth period of both the Paleozoic and the Phanerozoic. It is named after Devon, South West England, where rocks from this period were first studied. The first significant evolutionary radiation of history of life#Colonization of land, life on land occurred during the Devonian, as free-spore, sporing land plants (pteridophytes) began to spread across dry land, forming extensive coal forests which covered the continents. By the middle of the Devonian, several groups of vascular plants had evolved leaf, leaves and true roots, and by the end of the period the first seed-bearing plants (Pteridospermatophyta, pteridospermatophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct Animals Of North America
Extinction is the termination of an organism by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. As a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, and mammoths. Through evolution, species arise through the process of speciation. Species become extinct when they are no longer able to survive in changing conditions or against superio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
