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Baetiscidae
Baetiscidae is a family of mayflies. It contains a single extant genus, '' Baetisca'', native to North America with around 12 species. The family is noted for their spined armoured larvae, which live in flowing water pools and on the edges of streams where they are detritivores, consuming fine particles of organic matter. Two other extinct genera are known, extending back to the Early Cretaceous. They are closely related to Prosopistomatidae which have unusual, beetle-like nymphs as well as the extinct genus '' Cretomitarcys,'' with the three groups constituting the clade Carapacea. Genera These two genera belong to the family Baetiscidae: * '' Baetisca'' Walsh, 1862 * †'' Balticobaetisca'' Staniczek & Bechly, 2002 Baltic amber, Eocene * †'' Protobaetisca'' Staniczek 2007 Crato Formation The Crato Formation is a geologic formation of Early Cretaceous (Aptian) age in northeastern Brazil's Araripe Basin. It is an important Lagerstätte (undisturbed fossil accumulation) for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayflies
Mayflies (also known as shadflies or fishflies in Canada and the upper Midwestern United States, as Canadian soldiers in the American Great Lakes region, and as up-winged flies in the United Kingdom) are aquatic insects belonging to the order Ephemeroptera. This order is part of an ancient group of insects termed the Palaeoptera, which also contains dragonflies and damselflies. Over 3,000 species of mayfly are known worldwide, grouped into over 400 genera in 42 families. Mayflies have ancestral traits that were probably present in the first flying insects, such as long tails and wings that do not fold flat over the abdomen. Their immature stages are aquatic fresh water forms (called "naiads" or "nymphs"), whose presence indicates a clean, unpolluted and highly oxygenated aquatic environment. They are unique among insect orders in having a fully winged terrestrial preadult stage, the subimago, which moults into a sexually mature adult, the imago. Mayflies "hatch" (emerge as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosopistomatidae
Prosopistomatidae is a family of mayflies. There is one extant genus, '' Prosopistoma,'' with several dozen species found across Afro-Eurasia and Oceania. They are noted for their unusual beetle-shaped larvae, which live beneath rocks and stones along the gravelly lower reaches of rivers. Their ecology is unclear, but they are probably carnivorous. They are closely related to Baetiscidae, with both families being placed in the Carapacea. Genera These four genera belong to the family Prosopistomatidae: * '' Prosopistoma'' Latreille, 1833 * †'' Proximicorneus'' Lin et al., 2017 Burmese amber, Myanmar, Late Cretaceous (Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...) References Further reading * * * * Mayflies Insect families Articles created by Qbugbot< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baetisca
''Baetisca'' is a genus of armored mayflies in the family Baetiscidae Baetiscidae is a family of mayflies. It contains a single extant genus, '' Baetisca'', native to North America with around 12 species. The family is noted for their spined armoured larvae, which live in flowing water pools and on the edges of str .... There are about 12 described species in ''Baetisca''. Species These 12 species belong to the genus ''Baetisca'': * '' Baetisca becki'' Schneider & Berner, 1963 * '' Baetisca berneri'' Tarter & Kirchner, 1978 * '' Baetisca callosa'' Traver, 1931 * '' Baetisca carolina'' Traver, 1931 * '' Baetisca columbiana'' Edmunds, 1960 * '' Baetisca escambiensis'' Berner, 1955 * '' Baetisca gibbera'' Berner, 1953 * '' Baetisca lacustris'' McDunnough, 1932 * '' Baetisca laurentina'' McDunnough, 1932 * '' Baetisca obesa'' (Say, 1839) * '' Baetisca rogersi'' Berner, 1940 * '' Baetisca rubescens'' (Provancher, 1878) References Further reading * * External links * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic Amber
The Baltic region is home to the largest known deposit of amber, called Baltic amber or succinite. It was produced sometime during the Eocene epoch, but exactly when is controversial. It has been estimated that these forests created more than 100,000 tons of amber. Today, more than 90% of the world's amber comes from Kaliningrad Oblast of Russia. It is a major source of income for the region; the local Kaliningrad Amber Combine extracted 250 tonnes of it in 2014, 400 tonnes in 2015. "Baltic amber" was formerly thought to include amber from the Bitterfeld Lignite, brown coal mines in Saxony (Eastern Germany). Bitterfeld amber was previously believed to be only 20–22 million years old (Miocene), but a comparison of the animal inclusions in 2003 suggested that it was possibly Baltic amber that was redeposited in a Miocene deposit. Further study of insect taxa in the ambers has shown Bitterfeld amber to be from the same forest as the Baltic amber forest, but separately deposited f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crato Formation
The Crato Formation is a geologic formation of Early Cretaceous ( Aptian) age in northeastern Brazil's Araripe Basin. It is an important Lagerstätte (undisturbed fossil accumulation) for palaeontologists. The strata were laid down mostly during the Aptian age, about 113 million years ago. It thought to have been deposited in a semi-arid lacustrine wetland environment.Ribeiro et al., 2021 The Crato Formation earns the designation of Lagerstätte due to an exceedingly well preserved and diverse fossil faunal assemblage. Some 25 species of fossil fishes are often found with stomach contents preserved, enabling paleontologists to study predator-prey relationships in this ecosystem. There are also fine examples of pterosaurs, reptiles and amphibians, invertebrates (particularly insects), and plants. Even dinosaurs are represented: a new maniraptor was described in 1996. The unusual taphonomy of the site resulted in limestone accretions that formed nodules around dead organisms, pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aptian
The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 1.0 Ma to 113.0 ± 1.0 Ma (million years ago), approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous. The Aptian partly overlaps the upper part of the Western European Urgonian Stage. The Selli Event, also known as OAE1a, was one of two oceanic anoxic events in the Cretaceous Period, which occurred around 120 Ma and lasted approximately 1 to 1.3 million years. The Aptian extinction was a minor extinction event hypothesized to have occurred around 116 to 117 Ma.Archangelsky, Sergio.The Ticó Flora (Patagonia) and the Aptian Extinction Event" ''Acta Paleobotanica'' 41(2), 2001, pp. 115-22. Stratigraphic definitions The Aptian was named after the small city of Apt in the Provence region of France, which is also known for its cry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
