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Pilekiidae
Pilekiidae is a family of trilobites in the order Phacopida, specifically within Suborder Cheirurina. It includes the following genera: *'' Anacheiruraspis'' *''Anacheirurus'' *'' Chashania'' *''Demeterops'' *''Emsurina'' *'' Koraipsis'' *''Landyia'' *''Macrogrammus ''Macrogrammus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig, Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 4 ...'' *'' Metapilekia'' *'' Metapliomerops'' *'' Parapilekia'' *'' Pilekia'' *'' Pliomeroides'' *'' Pseudopliomera'' *'' Seisonia'' *'' Sinoparapilekia'' *'' Victorispina'' References Trilobite families {{phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilekiidae
Pilekiidae is a family of trilobites in the order Phacopida, specifically within Suborder Cheirurina. It includes the following genera: *'' Anacheiruraspis'' *''Anacheirurus'' *'' Chashania'' *''Demeterops'' *''Emsurina'' *'' Koraipsis'' *''Landyia'' *''Macrogrammus ''Macrogrammus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig, Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 4 ...'' *'' Metapilekia'' *'' Metapliomerops'' *'' Parapilekia'' *'' Pilekia'' *'' Pliomeroides'' *'' Pseudopliomera'' *'' Seisonia'' *'' Sinoparapilekia'' *'' Victorispina'' References Trilobite families {{phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anacheirurus
''Anacheirurus'' is a genus of trilobites. It was described by Reed in 1896, as a new genus for the species '' Cheirurus frederici'', and was originally described by Salter in 1864. Species * ''Anacheirurus asiaticus'' Petrunina, 1984 * ''Anacheirurus bohemicus'' (Ruzicka, 1926) * ''Anacheirurus frederici'' (Salter, 1864) * ''Anacheirurus plutonis'' Rushton, 1973 * ''Anacheirurus atecae'' Hamman, 1971 External links ''Anacheirurus''at the Paleobiology Database Fossils of Great Britain Pilekiidae Phacopida genera Fossil taxa described in 1896 Fezouata Formation fossils {{Phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Demeterops
''Demeterops'' is a genus of trilobites in the order Phacopida, that existed during the lower Ordovician in what is now the United States. It was described by Pribyl and Vanek in 1985, and the type species is ''Demeterops loella'', which was originally described as a dubious species in the genus '' Pilekia'' by Demeter, in 1973. The new generic name honours the species' original author. The type locality was the Fillmore Formation The Fillmore Limestone is a geologic formation in Utah. It preserves fossils A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, ... in Utah. P.A. Jell and J.M. Adrain. References Exter ...
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Emsurina
''Emsurina'' is a genus of trilobites in the order Phacopida, that existed during the upper Cambrian in what is now Russia. It was described by Sivov in 1955, and the type species is ''Emsurina sibirica''. The type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (other) * Locality (other) {{disambiguation ... was the Tolstochikhin Formation in Salair. P.A. Jell and J.M. Adrain. References External links ''Emsurina'' at the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landyia
''Landyia'' is a trilobite in the order Phacopida, that existed during the lower Ordovician in what is now Australia. It was described by Jell in 1985, and the type species is ''Landyia elizabethae''. The type locality Type locality may refer to: * Type locality (biology) * Type locality (geology) See also * Local (other) * Locality (other) {{disambiguation ... was the Digger Island Formation in Victoria. P.A. Jell and J.M. Adrain. References External links ''Landyia'' at the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrogrammus
''Macrogrammus'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Arenig, Arenig stage of the Ordovician Period, a faunal stage which lasted from approximately 478 to 471 million years ago. Its fossil name is ''Macrogrammus scylfense Whittard'' named after its British Collector WF Whittard in 1966''.'' References Pilekiidae Phacopida genera Ordovician trilobites of South America Ordovician trilobites of Europe {{Phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phacopida
Phacopida ("lens-face") is an order of trilobites that lived from the Late Cambrian to the Late Devonian. It is made up of a morphologically diverse assemblage of taxa in three related suborders. Characteristics Phacopida had 8 to 19 thoracic segments and are distinguishable by the expanded glabella, short or absent preglabellar area, and schizochroal (Phacopina) or holochroal (Cheirurina and Calymenina) eyes. Schizochroal eyes are compound eyes with up to around 700 separate lenses. Each lens has an individual cornea which extended into a rather large sclera. The development of schizochroal eyes in phacopid trilobites is an example of post-displacement paedomorphosis. The eyes of immature holochroal Cambrian trilobites were basically miniature schizochroal eyes. In Phacopida, these were retained, via delayed growth of these immature structures (post-displacement), into the adult form. '' Eldredgeops rana'' (Phacopidae) and '' Dalmanites limulurus'' (Dalmanitidae) are tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheirurina
Cheirurina is a suborder of the trilobite order Phacopida. Known representatives range from the uppermost Cambrian (upper Furongian) to the end of the Middle Devonian (Givetian The Givetian is one of two faunal stages in the Middle Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Eifelian Stage and followed by the Frasnian Stage. It is named after the town of Givet in Fra ...). Cheirurina is made up of a morphologically diverse group of related families. References Phacopida Prehistoric animal suborders Arthropod suborders Cambrian trilobites Ordovician trilobites Silurian trilobites Devonian trilobites Furongian first appearances Givetian extinctions {{phacopida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |