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Andalusiana
Holmiidae is a family of trilobites, that lived during the Lower Cambrian (Atdabanian). The Holmiidae is a diverse family of eight genera containing at least 17 species. It includes some of the earliest trilobites of Baltica. Holmiidae occur throughout Baltica (Scandinavia and the eastern seaboard of the Baltic Sea) and Western Laurentia (in the Great Basin of the US and northwestern Canada), and also in Morocco. Taxonomy Hupé (1953) defined the Holmiidae as a subfamily (Holmiinae) within the Olenellidae containing ''Holmia'', ''Kjerulfia'' and ''Bondonella''. Harrington et al. (1959) excluded ''Kjerulfia'', while assigning ''Schmidtiellus'' to it. Bergström (1973) included ''Holmia'', ''Elliptocephala'', ''Esmeraldina'', ''Schmidtiellus'' and ''Wanneria''. Repina (1979) assigned ''Holmia'', ''Schmidtiellus'', ''Kjerulfia'', ''Elliptocephala'', ''Bondonella'', ''Andalusiana'' and ''Holmiella'' to the Holmiinae, that together with the monotypic Callaviinae comprised the Holmi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olenelloidea
The Olenelloidea are a superfamily of trilobites, a group of extinct marine arthropods. They lived during the late Lower Cambrian and species occurred on all paleocontinents. Taxonomy Palmer and Repina assigned '' Gabriellus'' and ''Callavia'' to the Olenelloidea, but the ocular lobes in these two genera circumscribe the entire lateral border of the frontal lobe of the glabella, and thus, do not belong to this superfamily, but to the Judomioidea. Geyer assigned '' Cambropallas'' to the Olenelloidea, but it lacks the diagnostic features and appears to be closely related to '' Andalusiana'', and is now considered to be an advanced member of the Nevadioidea. Distribution In western Laurentia Fallotaspididae and Archaeaspididae proceed the first Olenelloidea. The Holmiidae occur at the late Atdabanian, and are contemporary with the Nevadioidea. They are followed by Biceratopsidae and Olenellidae. Description As with most early trilobites, the Olenelloidea have an almost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambropallas
''Cambropallas'' is an extinct genus of trilobite in the family Holmiidae Holmiidae is a family of trilobites, that lived during the Lower Cambrian (Atdabanian). The Holmiidae is a diverse family of eight genera containing at least 17 species. It includes some of the earliest trilobites of Baltica. Holmiidae occur thro .... There is one described species in ''Cambropallas'', ''C. telesto''. References Olenelloidea Articles created by Qbugbot {{Redlichiida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Judomioidea
The Judomioidea are a superfamily of trilobites, a group of extinct marine arthropods. Its species lived during the Lower Cambrian (Atdabanian Cambrian Stage 3 is the still unnamed third stage of the Cambrian. It succeeds Cambrian Stage 2 and precedes Cambrian Stage 4, although neither its base nor top have been formally defined. The plan is for its lower boundary to correspond approx ...).Whittington, H. B. et al. Part O, Treatise on Invertebrate Paleontology. Revised, Volume 1 – Trilobita – Introduction, Order Agnostida, Order Redlichiida. 1997 References Olenellina Cambrian trilobites Cambrian first appearances Terreneuvian extinctions Arthropod superfamilies {{redlichiida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalon (arthropod Head)
The cephalon is the head section of an arthropod. It is a tagma, i.e., a specialized grouping of arthropod segments. The word cephalon derives from the Greek κεφαλή (kephalē), meaning "head". Insects In insects, ''head'' is a preferred term. The insect head consists of five segments, including three (the labial, maxillary and mandibular) necessary for food uptake, which are altogether known as the gnathocephalon and house the suboesophageal ganglion of the brain, as well as the antennal segment, and an ocular segment, as well as a non segmented fused section of the head where the archicerebrum is housed known as the acron. See also arthropod head problem. Chelicerates and crustaceans In chelicerates and crustaceans, the cephalothorax is derived from the fusion of the cephalon and the thorax, and is usually covered by a single unsegmented carapace. In relation with the arthropod head problem, phylogeny studies show that members of the Malacostraca class of cru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schmidtiellus
''Schmiditellus'' is an extinct genus of holmiid trilobites from the Cambrian of Poland. As of 2017, a ''Schmidtiellus reetae'' fossil from 530 mya, collected in Saviranna in northern Estonia, is the oldest known fossilized eye. The structure is similar to the compound eyes of modern-day dragonflies and bees, but with (~100) ommatidia spaced further apart, and without a lens A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), .... References Cambrian trilobites Olenelloidea Fossil taxa described in 1906 {{Redlichiida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holmia Kjerulfi Body 01
Holmia may refer to: * Holmia (Cilicia), a town of ancient Cilicia, now in Turkey * Holmia, the Latin name of Stockholm * Holmia, a residential area in the centre of Stockholm, on the island Kungsholmen * Holmia, the vernacular name of Holmium(III) oxide Holmium(III) oxide, or holmium oxide is a chemical compound of a rare-earth element holmium and oxygen with the formula Ho2O3. Together with dysprosium(III) oxide (Dy2O3), holmium oxide is one of the most powerfully paramagnetic substances known. ... * 378 Holmia, an asteroid * ''Holmia'' (trilobite), a trilobite belonging to the Olenellina suborder {{disambiguation, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palmettaspis
''Palmettaspis'' is an extinct genus of trilobite in the order Olenellida. There are at least two described species in ''Palmettaspis''. Species These two species belong to the genus ''Palmettaspis'': * † ''Palmettaspis consorta'' Fritz * † ''Palmettaspis parallela'' Fritz References Trilobites Articles created by Qbugbot {{trilobite-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kjerulfia
''Kjerulfia'' is an extinct genus of trilobite in the family Holmiidae Holmiidae is a family of trilobites, that lived during the Lower Cambrian (Atdabanian). The Holmiidae is a diverse family of eight genera containing at least 17 species. It includes some of the earliest trilobites of Baltica. Holmiidae occur thro .... There are at least two described species in ''Kjerulfia''. Species These two species belong to the genus ''Kjerulfia'': * † ''Kjerulfia lata'' Kiaer, 1917 * † ''Kjerulfia orienta'' (Orlowski, 1974) References Olenelloidea Articles created by Qbugbot {{Redlichiida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holmia (trilobite)
''Holmia'' is a genus of a well known group of extinct arthropods, the trilobites, that lived during the Lower Cambrian (Atdabanian) in what are now Scandinavia, Poland and Morocco. Etymology ''Holmia'' is the Latin name for Stockholm, in the neighborhood of which early finds of this trilobite were collected. ''H. kjerulfi'' was named in honor of the Norwegian geologist and paleontologist Theodor Kjerulf Theodor Kjerulf (30 March 182525 October 1888) was a Norwegian geologist and professor at the University of Oslo. He also served as director of the Norwegian Geological Survey. Biography He was born in Christiania (now Oslo), Norway. He was the .... Taxonomy Species previously assigned to ''Holmia'' * ''H. hyperborea'' = '' Mesolenellus hyperborea'' * ''H. ljungneri'' = '' Fallotaspis ljungneri'' * ''H. lundgreni'' = '' Elliptocephala lundgreni'' * ''H. macer'' = '' Mummaspis macer'' * ''H. mickwitzi'' = '' Schmidtiellus mickwitzi'' * ''H. mirabilis'' = '' Ellipto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
