The word "mas" has multiple derivations: "masking", the Christian "mass" (with which the days of revelling conclude on Ash Wednesday) and "masquerade".
Ancestral state reconstructions suggest that pelvic fins were lost independently in Erpetoichthys, and unambiguously estimate multiple independent derivations of body elongation and shortening.
For example, there exist multiple independent derivations of body elongation in modern Actinopterygian fish [e.g., [ 20- 23]], amphibians [e.g., [ 24]], squamate reptiles [e.g., [ 25- 27]], and numerous extinct tetrapod lineages [e.g., [ 28, 29]].
Under this perspective, a complex demographic model, incorporating multiple independent derivations of domesticated populations from wild boar followed by inbreeding and recent admixture among them, is likely needed to account for the observed low haplotype diversity [ 7, 17, 32].
We may have also underestimated transitions to troglomorphy because clades of exclusively troglomorphic taxa (e.g., Cyptobunus, Cave of the Winds plus Mallory) could represent instances of multiple independent derivations.
He would create full-size bronze derivations of all twelve of the animal heads".
Some songs skip along to old calypso samples; many flirt with derivations of reggae and ska.
There are three possible derivations of note.
His derivations of these Propositions are based largely on geometry.
Modular product platforms (MPP) enable the derivation of multiple product variants while realizing beneficial effects like economies of scale.
