Although the fossils of several older proto-frogs with primitive characteristics are known, the oldest " true frog " is Prosalirus bitis, from the Early Jurassic Kayenta Formation of Arizona.

The Horseshoe Canyon Formation is exposed in its Type locality ( geology ) | type section at Horseshoe Canyon ( Alberta ) | Horseshoe Canyon, Alberta

The fauna of the Horseshoe Canyon Formation is well-known, as vertebrate fossils, including those of dinosaurs, are quite common.

Most parts of the territory are on the Opalinuston-Formation ( Opalinum Clay Formation ) of the Aalenian subdivision, which is named after Aalen.

The Burgess Shale Formation, located in the Canadian Rockies of British Columbia, is one of the world's most celebrated fossil fields, and the best of its kind.

The precise formation mechanism is not known for certain, but the most widely accepted hypothesis suggests that the edge of the Cathedral Formation reef became detached from the rest of the reef, slumping and being transported some distance — perhaps kilometers — away from the reef edge.

This would have left a steep cliff, the bottom of which would be protected, because the limestone of the Cathedral Formation is difficult to compress, from tectonic decompression.

So far, only a single bird species, which has not been named, has been confidently identified from both above and below the K-Pg boundary ( it is present in the Maastrichtian Hell Creek Formation and Danian Fort Union Formation ).

Evidence of this existence is based on the discovery of dinosaur remains in the Hell Creek Formation up to above and 40, 000 years later than the K – T boundary.

The relative uniformity of organisation and practice is undoubtedly due to the influence of a booklet, written early in Christadelphian history, called A Guide to the Formation and Conduct of Christadelphian Ecclesias.

The lower boundary GSSP of the Ediacaran is at the base of the cap carbonate ( Nuccaleena Formation ), immediately above the Elatina diamictite in the Enorama Creek section, Brachina Gorge, Flinders Ranges, South Australia.

Furthermore, Oman presents in its stratigraphic record a large negative carbon isotope excursion, within the Shuram Formation that is clearly away from any glacial evidence < ref name = LeGuerroue2006b >

Formation by merger is available only to public limited companies from different Member States.

Formation of an SE holding company is available to public and private limited companies with their registered offices in different Member States or having subsidiaries or branches in Member States other than that of their registered office.

Formation of a joint subsidiary is available under the same circumstances to any legal entities governed by public or private law.

* UFO – ( Unnatural Formation of Objects ) a pile of material that obviously did not form naturally and is a likely cache hiding spot.

Known from bones found in the Yorktown Formation of the Lee Creek Mine in North Carolina, it is believed to have split along with the Great Auk from a common ancestor.

Formation of urine is also the function of the kidney.

In Propaganda: The Formation of Men's Attitudes, Jacques Ellul maintains that the " principal aims of these psychological methods is to destroy a man's habitual patterns, space, hours, milieu, and so on.

The total number of collection sites is limited and distributed over a vast period of time: Maotianshan Shale and Balang Formation ( China ), Burgess Shale and Bertie Formation ( Canada ), the Šárka Formation ( Czech Republic ), Emu Bay Shale ( Australia ), Idaho and Utah ( USA ).

The Formation of LSW is seasonal and does not occur every year.

An even larger specimen is known from the Pierre Shale Formation, with a wingspan of, though this specimen may belong to the distinct genus and species Geosternbergia maysei.

They are at last succeeded by the Trossingen Formation already belonging to the Late Triassic.

Robert O ' Dell commented about this Wikipedia article, " The only egregious error is the last sentence in the Stellar Formation section.

Maybe the fossil family Cretereismatidae from the Lower Cretaceous Crato Formation of Brazil also belongs as last offshoot to Permoplectoptera.

* October-Charles Darwin publishes his last scientific book The Formation of Vegetable Mould through the Action of Worms.

On that unconformity lie tillites, of the Nantuo Formation, cemented glacial till formed of glacial deposits of cobbles and gravel laid down at the end of the Marinoan / Varangerian glaciation ( the third and last of a series of very extensive glaciations during a period called the Cryogenian -- (' Snowball Earth ').

Bioturbation's importance for soil processes and geomorphology was first realised by Charles Darwin, who devoted his last scientific book to the subject ( The Formation of Vegetable Mould through the Action of Worms, 1881 ).

As it was one of his last books, followed only by the publication of The Formation of Vegetable Mould through the Action of Worms, he was assisted by his son Francis in conducting the necessary experiments and preparing the manuscript.

Formation of the A complex is usually the key step in determining the ends of the intron to be spliced out, and defining the ends of the exon to be retained.

* Formation of a tert-butyl carbocation by separation of a leaving group ( a bromide anion ) from the carbon atom: this step is slow and reversible.

Formation No. 2 flew further north, cutting over Vlieland and crossing the IJsselmeer before joining the first route near Wesel and then flying south beyond the Möhne to the Sorpe River.

Those who are interested in joining the Society begin by living in community for a two year period ; this is called ‘ Initial Formation ’.

Formation No. 2, numbering five aircraft, piloted by Flt Lt Joe McCarthy ( an American serving in the RCAF ), Pilot Officer Vernon Byers, Flt Lt Bob Barlow ( RAAF ), P / O Geoff Rice and Flt Lt Les Munro ( RNZAF ), was to attack the Sorpe.

Taken as a whole, the Doushantuo Formation ranges from about 635 Ma ( million years ) ago at its base to about 551 Ma at its top, predating by perhaps five Ma the earliest of the ' classical ' Ediacaran faunas from Mistaken Point on the Avalon peninsula of Newfoundland, and recording conditions a good forty to fifty million years before the Cambrian explosion.

Youth, Teen, Collegiate, Adult, or Master age groups, in any of five categories: Formation, Advanced Formation, Skating, Open Skating, and Dance.

The Commando Formation dominated the Singapore Armed Forces Sports Association's annual sports championships, having won five out of six times from 1988 to 1993.

Remains have been found in the Morrison Formation from the Upper Jurassic Period, along with five other sauropods: Diplodocus, Apatosaurus, Camarasaurus, Brachiosaurus and Haplocanthosaurus, as well as the predator Allosaurus and armored dinosaur Stegosaurus.

One of the Royal Yeomanry's five squadrons, their current role is to support the Formation Reconnaissance Regiments and the Joint Chemical Biological Radiological and Nuclear Regiment on operations by providing skilled CBRN reconnaissance soldiers.

The force was increased to five regiments by the 2003 Defence White Paper, again by re-roling an armoured regiment ; it is about this time that the designation Formation Reconnaissance Regiment appeared.

Formation of about 30 primordial follicles in the ovarian cortex region during 5-7 month of embryonic development.

A recent study of very well preserved embryonic shells of the family Pseudorthoceratidae from the Mississippian ( Lower Carboniferous ) Imo Formation of Arkansas ( Kröger and Mapes 2004 ) reveals that the morphologic diversity of the early growth stages of these creatures is more diverse than would be expected.

Numerous embryonic and / or newborn specimens of Hyphalosaurus have been recovered from the Yixian Formation, dating 122 million years ago.