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Patrick Burn Formation
The Patrick Burn Formation is a Formation (geology), geologic formation in Scotland. This formation is main part of fossil site called as Birk Knowes. It preserves fossils dating back to the Silurian Period (geology), period. Description This formation contains fossils from non-marine or marginal marine environment. Site is closed by Scottish government agency Scottish Natural Heritage (now NatureScot), due to fossil robbery by amateur collector. Paleobiota Arthropods Chordates See also * List of fossiliferous stratigraphic units in Scotland References * Geologic formations of Scotland Silurian System of Europe Silurian Scotland Silurian southern paleotropical deposits [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by Abraham Gottlob W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hardieopterus
''Hardieopterus'' is a genus of prehistoric eurypterid classified within the family Hardieopteridae. The genus contains four species, all Silurian in age; ''H. lanarkensis'' and ''H. macrophthalmus'' from Scotland, ''H. megalops'' from England and ''H. myops'' from the United States.Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF). See also * List of eurypterids This list of eurypterid genera is a comprehensive listing of all genera that have ever been included in the order Eurypterida, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now conside ... References Stylonurina Silurian arthropods of Europe Fossils of Great Britain Silurian arthropods of North America Silurian eurypterids Eurypterids of Eur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllocarid
Phyllocarida is a subclass of crustaceans, comprising the extant order Leptostraca Leptostraca (from the Greek words for ''thin'' and ''shell'') is an order of small, marine crustaceans. Its members, including the well-studied '' Nebalia'', occur throughout the world's oceans and are usually considered to be filter-feeders. It ... and the extinct orders Hymenostraca and Archaeostraca. See also *'' Ceratiocaris'' *'' Cinerocaris'' *'' Vladicaris'' References External links Malacostraca Arthropod subclasses Paleozoic crustaceans Mesozoic crustaceans Cenozoic crustaceans Extant Cambrian first appearances Taxa described in 1879 Taxa named by Alpheus Spring Packard {{Malacostraca-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratiocaris
''Ceratiocaris'' is a genus of paleozoic phyllocarid crustaceans whose fossils are found in marine strata from the Upper Ordovician until the genus' extinction during the Silurian. They are typified by eight short thoracic segments, seven longer abdominal somites and an elongated pretelson somite. Their carapace is slightly oval shaped; they have many ridges parallel to the ventral margin and possess a horn at the anterior end. They are well known from the Silurian Eramosa formation of Ontario, Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tota .... The following species are included: *''Ceratiocaris bohemica'' Barrande, 1872 *''Ceratiocaris harpago'' Poschmann, Bergmann & Kühl, 2018 *''Ceratiocaris macroura'' Collette & Rudkin, 2010 *''Ceratiocaris monroei'' Salter ''in'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ainiktozoon Loganese
''Ainiktozoon loganense'' is an enigmatic fossil organism from the Silurian of Scotland. Originally described as an early chordate, recent studies suggest that it was in fact an arthropod, more precisely a thylacocephalid crustacean. ''A. loganense'' is known from a number of specimens from Silurian rocks (Ludlow series) at Lesmahagow Lesmahagow ( ; sco, Lismahagie or ''Lesmahagae'', gd, Lios MoChuda) is a small town in the historic county of Lanarkshire on the edge of moorland, near Lanark in the central belt of Scotland. Lesmahagow was also a civil parish. It lies west o ... in Scotland. Etymology The generic name ''Ainiktozoon'' is Greek for "enigmatic animal", from (', "riddling, enigmatical"). References External links * (see the files whose names start "ain") Thylacocephala Prehistoric crustacean genera Silurian crustaceans Silurian animals of Europe Fossil taxa described in 1937 {{paleo-arthropod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thylacocephalan
The Thylacocephala (from the Greek or ', meaning "pouch", and or ' meaning "head") are a unique grouping of extinct probable mandibulate arthropods, that have been considered by some researchers as having possible crustacean affinities. As a class they have a short research history, having been erected in the early 1980s. They typically possess a large, laterally flattened carapace that encompasses the entire body. The compound eyes tend to be large and bulbous, and occupy a frontal notch on the carapace. They possess three pairs of large raptorial limbs, and the abdomen bears a battery of small swimming limbs. Inconclusive claims of thylacocephalans have been reported from the lower lower Cambrian ('' Zhenghecaris''), but later study considered that genus as radiodont or arthropod with uncertain systematic position. The oldest unequivocal fossils are Upper Ordovician and Lower Silurian in age. As a group, the Thylacocephala survived to the Santonian stage of the Upper Cretaceo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ainiktozoon
''Ainiktozoon loganense'' is an enigmatic fossil organism from the Silurian of Scotland. Originally described as an early chordate, recent studies suggest that it was in fact an arthropod, more precisely a thylacocephalid crustacean. ''A. loganense'' is known from a number of specimens from Silurian rocks (Ludlow series) at Lesmahagow Lesmahagow ( ; sco, Lismahagie or ''Lesmahagae'', gd, Lios MoChuda) is a small town in the historic county of Lanarkshire on the edge of moorland, near Lanark in the central belt of Scotland. Lesmahagow was also a civil parish. It lies west o ... in Scotland. Etymology The generic name ''Ainiktozoon'' is Greek for "enigmatic animal", from (', "riddling, enigmatical"). References External links * (see the files whose names start "ain") Thylacocephala Prehistoric crustacean genera Silurian crustaceans Silurian animals of Europe Fossil taxa described in 1937 {{paleo-arthropod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudoniscus
''Pseudoniscus'' is a genus of synziphosurine, a paraphyletic group of fossil chelicerate arthropods. ''Pseudoniscus'' was regarded as part of the clade Planaterga. Fossils of the genus have been discovered in deposits of the Silurian period in the United Kingdom, the United States and Estonia. ''Pseudoniscus'' is one of the two members of the family Pseudoniscidae, the other being '' Cyamocephalus''. The prosoma of ''Pseudoniscus'' covered by a carapace with recurved posterior margin and pointed genal spines. Most of the dorsal feature on the carapace (e.g. ophthalmic ridges, cardiac lobe) are not significantly expressed. At least some species have a median spine in front of the carapace like the close-related '' Cyamocephalus''. Unlike most other synziphosurines with opisthosoma subdivided into a wide preabdomen and narrow postabdomen, the 10-segmented opisthosoma of ''Pseudoniscus'' possess undivided, metameric segmentation similar to '' Pasternakevia''. Within ''Pseudonisc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20200814 Cyamocephalus Loganensis
__NOTOC__ Year 814 ( DCCCXIV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire * April 13 – Byzantine–Bulgarian Wars: Over the winter Krum, ruler (''khan'') of the Bulgarian Empire, had assembled a huge army (including Slavs and Avars), for a campaign against the Byzantine Empire. But before he sets out for a major attack on Constantinople, he dies of a stroke. Krum is succeeded by his son Omurtag.John V.A. Fine, Jr. (1991). The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century, p. 99. . Europe * January 28 – Charlemagne dies of pleurisy in Aachen, after an almost 14-year reign (since 800) as the first Roman Emperor of Frankish origin (the precursor of the Holy Roman Emperor). He is embalmed and buried in Aachen Cathedral. Charlemagne is succeeded by his son Louis the Pious, as king of the Frankish Empire. * Louis I establis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synziphosurine
Synziphosurina is a paraphyletic group of chelicerate arthropods previously thought to be basal horseshoe crabs (Xiphosura). It was later identified as a grade composed of various basal euchelicerates, eventually excluded form the monophyletic Xiphosura ''sensu stricto'' and only regarded as horseshoe crabs under a broader sense ('Xiphosura' ''sensu lato''). Synziphosurines survived at least since early Ordovician to early Carboniferous in ages, with most species are known from the in-between Silurian strata. File:20200920 Synziphosurina dorsal segmentation.png, Dorsal morphology and variation of opisthosomal segmentation across synziphosurines. While ''Weinbergina'' and ''Willwerathia'' being exceptionally large, most synziphosurines are small arthropods with body length ranging only about a few centimeters long. The body of synziphosurine composed of a prosoma covered by a dome-like carapace (prosomal dorsal shield) and an opisthosoma with usually unfused 9-11 segments expre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyamocephalus
''Cyamocephalus'' is a genus of synziphosurine, a paraphyletic group of fossil chelicerate arthropods. ''Cyamocephalus'' was regarded as part of the clade Planaterga. Fossils of the single and type species, ''C. loganensis'', have been discovered in deposits of the Silurian period in Lesmahagow, Scotland (in the United Kingdom). ''Cyamocephalus'' is one of the two members of the family Pseudoniscidae, the other being ''Pseudoniscus ''Pseudoniscus'' is a genus of synziphosurine, a paraphyletic group of fossil chelicerate arthropods. ''Pseudoniscus'' was regarded as part of the clade Planaterga. Fossils of the genus have been discovered in deposits of the Silurian period i ...''. ''Cyamocephalus'' differ from ''Pseudoniscus'' by the fused tergites of 6th and 7th opisthosomal segments. References Synziphosurina Planaterga Silurian first appearances Silurian arthropods Fossils of Scotland Fossil taxa described in 1927 {{Chelicerata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
