Sentence examples for Of doubtful validity from inspiring English sources

The supposed Miocene pelican Liptornis from Patagonia is a nomen dubium (of doubtful validity), being based on fragments providing insufficient evidence to support a valid description.

These larger units are of doubtful validity and restricted utility.

Behavioral characteristics are of doubtful validity in relating suborder relationships because the similarities may have arisen by convergence.

The prediction of properties on the basis of an orderly extrapolation appears to be of doubtful validity, however, in this heavy-element region of the periodic table.

In advance of a decision by the statute court applying the statute to persons outside that definition, we should not adopt a construction of the provision which might render it of doubtful validity.

The set of dependencies can also be used to filter cases to be classified, eliminating spurious cases, and cases for which the classification is likely to be of doubtful validity.

Accordingly, word classes such as adjective and preposition, which presuppose the existence of the noun phrase and prepositional phrase, are of equally doubtful validity.

In very complex crystals such as proteins these methods are inapplicable or of very doubtful validity, as the individual atoms are very numerous sually more than a thousand and not easily resolved.

It was not, instead being designated "of very doubtful validity".

11 An exhaustive review of Himes 10 also revealed the doubtful validity of parent-reported weight and height values for classifying children as underweight, overweight or obese.

* Doubtful validity of certain species.