The relative scarcity of fossil evidence prevents precise dating, but the most recent molecular study, based on multilocus sequence typing, suggest a Late Carboniferous – Early Permian origin of extant amphibians.

Other commentators, such as John Calvin, attach no great importance to the precise dating.

The precise dating of the Constitution of Medina remains debated but generally scholars agree it was written shortly after the Hijra ( 622 ).

The precise dating of the Rule of the Master is problematic ; but it has been argued on internal grounds that it antedates the so-called Rule of Saint Benedict created by Benedict of Nursia for his monastery in Monte Cassino, Italy ( c. 529 ), and the other Benedictine monasteries he himself had founded ( cf.

" Almost universally, academics, economists, policy makers, and businesses defer to the determination by the NBER for the precise dating of a recession's onset and end.

Built in winter 3807 BC or spring 3806 BC, tree-ring dating ( Dendrochronology ) enabled very precise dating.

Rubidium-strontium dating is not as precise as the uranium-lead method, with errors of 30 to 50 million years for a 3-billion-year-old sample.

With the advent of more precise dating, a phytoplankton extinction event which had been associated with Snowball Earth was shown to precede glaciations by 16 million years.

) do not allow very precise dating, even augmented by the few existing C-14 dates due to the tolerance inherent in these.

It is possible to estimate the age of a young horse by observing the pattern of teeth in the mouth, based on which teeth have erupted, although the difference between breeds and individuals make precise dating impossible.

Tree-ring dating ( dendrochronology ) of the timbers has enabled very precise dating of the track, showing it was built in 3807 or 3806 BC.

The Bablyonian Chronicles allow the fairly precise dating of the capture of Jehoiachin and the start of Zedekiah's reign, and they also give the accession year of Nebuchadnezzar's successor Amel-Marduk ( Evil Merodach ) as 562 / 561 BC, which was the 37th year of Jehoiachin's captivity according to 2 Kings 25: 27.

Though untouched areas adjacent to the original excavations were left undisturbed awaiting a more precise dating of Roman pottery types, the " Baths of the Swimmer ", named for the mosaic figure in the apodyterium, were meticulously excavated, in 1966 – 70 and 1974 – 75, in part as a training ground for young archaeologists and in part to establish a laboratory of well-understood finds as a teaching aid.

Although precise dating is debated, the A, B, and C texts are now commonly thought of as the progressive ( 20 – 25 years ) work of a single author.

* The Sweet Track, an ancient causeway also in the Somerset Levels, the oldest timber trackway discovered in Northern Europe, is built in 3807 BC or 3806 BC, tree-ring dating ( Dendrochronology ) enabled very precise dating.

There is a relatively good fossil record of chiton shells, but ocelli are only present in those dating to or younger ; this would make the ocelli, whose precise function is unclear, the most recent eyes to evolve.

Dating Ockeghem's works is controversial, as there are almost no external references allowing precise dating, excepting of course the death of Binchois ( 1460 ) for which Ockeghem composed a motet-chanson.

Secondly, both Janssen and Krauss stress in their papers that the relative scarcity of the hieratic text in Ostraca IFAO 1254 precludes a clear dating of the document to Ramesses III's reign and that palaeography, in general, does not give a precise date for a document's creation.

The manuscript itself carries no date but a rather precise dating has been given to it, based mainly on its palaeography or handwriting, and also the known facts of Cuthbert's burial.

The less precise hints about dating that can be derived from the style of the binding compared to other works do not conflict with these conclusions.

The precise dating of the play is unknown, although a holographic transcript ( dated 1590 in another hand ) exists and there is some evidence that it was being performed on stage as early as 1587.

The precise dating of the play is important for two reasons, firstly because this play may be the earliest surviving original work of Munday and secondly because of the parallels that exist between this play and Shakespeare's Midsummer Night's Dream.

The cartridges held a minimum of 85 kB when formatted on a ZX Microdrive ( exact capacity depended on the number of " bad " sectors found and the precise speed of the Microdrive motor when formatting ).

In more precise language, the dependence of y upon x means that y is a function of x.

Once a GSSP boundary has been agreed upon, a " golden spike " is driven into the geologic section to mark the precise boundary for future geologists ( though in practice the " spike " need neither be golden nor an actual spike ).

Contrary to such views, Abraham Robinson showed in 1960 that infinitesimals are precise, clear, and meaningful, building upon work by Edwin Hewitt and Jerzy Łoś.

The precise detailed religious requirements for matzah are not universally agreed upon ; for example there is disagreement over what grains may be used, whether matzah which is wetted after being baked then becomes chametz or not, and so on.

Triple point cells are so effective at achieving highly precise, reproducible temperatures, an international calibration standard for thermometers called ITS – 90 relies upon triple point cells of hydrogen, neon, oxygen, argon, mercury, and water for delineating six of its defined temperature points.

She believed that comedy was more difficult to play than drama because it required more precise timing and said that more emphasis should be placed upon comedy as part of an actor's training.

Dissociation, the term that underlies the dissociative disorders including DID, lacks a precise, empirical and generally agreed upon definition.

When all of the details are worked out one ends up with an expression that again takes the form of an Arrhenius exponential multiplied by a slowly varying function of T. The precise form of the temperature dependence depends upon the reaction, and can be calculated using formulas from statistical mechanics involving the partition functions of the reactants and of the activated complex.

Therefore it may be necessary to adopt more precise methods of calculating potency based upon observations of relative, but not necessarily equal effects, likewise, statistical methods may also be employed.

He chose the name Caine reputedly because at the precise instant he needed to decide upon his new stage name, he saw a cinema marquee for the then-current movie The Caine Mutiny and thought that it would make a good last name in conjunction with Michael.

The precise location of the men and animals could not be agreed upon by witnesses afterward.

However, as different printed editions of the Samaritan Pentateuch are based upon different sets of manuscripts, the precise number varies significantly from one edition to another.

Much of the initial resistance to Joule's work stemmed from its dependence upon extremely precise measurements.

The theorem crucially depends upon the precise definitions of compactness and of the product topology ; in fact, Tychonoff's 1935 paper defines the product topology for the first time.

" The precise mechanism had not been agreed upon.

Indeed, astrologers ' professional responsibility and desire for predictive knowledge for a large part spurred the advancement of astronomy, and the Babylonians developed a very precise ability to mathematically predict the location of celestial points and phenomena based upon their observable cycles.

" Without corroboration in surviving texts, this surmise that the Babylonian version of the story is based upon a modified version of an older epic, in which Enlil, not Marduk, was the god who slew Tiamat, is more recently dismissed as " distinctly improbable ", in fact, Marduk has no precise Sumerian prototype.

Using the Schräge Musik required precise timing and swift evasion ; a fatally damaged bomber could fall directly upon the night fighter who had just shot it down if the fighter could not quickly turn away.

Although the synthetic method has more to do with space-perception and thereby imparts a rare charm to its first simple developments, the realm of space-perception is nevertheless not closed to the analytic method, and the formulae of analytic geometry can be looked upon as a precise and perspicuous statement of geometrical relations.

This controversy centered upon the nature of the Son of God, and his precise relationship to God the Father.

He believed that decisions based upon tradition and rules of thumb should be replaced by precise procedures developed after careful study of an individual at work, including via time and motion studies, which would tend to discover or synthesize the " one best way " to do any given task.

The Ecuadorian artillery-carefully camouflaged on the reverse slopes of the Condor range-could deliver precise and deadly fire upon attacking Peruvian troops time and again.

Direct distance measurements are based upon precise determination of the distance between the Earth and the Sun, which is called the Astronomical Unit ( AU ).

As the ECJ held in Becker, another case involving VAT, " wherever the provisions of a directive appear ... to be unconditional and sufficiently precise, those provisions may, in the absence of implementing measures adopted within the prescribed period, be relied upon as against any national provision which is incompatible with the directive or insofar as the provisions define rights which individuals are able to assert against the State.