Yes. The first human body was of necessity made immediately by God because no pre-existing body had been formed whereby another body of the same species could be generated.
Necesse fuit quod primum corpus hominis immediate formaretur a Deo quia corpus humanum nunquam formatum fuerat, cuius virtute per viam generationis aliud simile in specie formaretur.
Forms cannot be made in themselves, but only in the composite, as we have explained (Q65, A4).
Formis non competit per se fieri, sed composito, ut supra expositum est.
Although the angels are the ministers of God, as regards what He does in bodies, yet God does something in bodies beyond the angels' power, as, for instance, raising the dead, or giving sight to the blind: and by this power He formed the body of the first man from the slime of the earth. Nevertheless the angels could act as ministers in the formation of the body of the first man, in the same way as they will do at the last resurrection by collecting the dust.
Etsi Angeli aliquod ministerium Deo exhibeant in his quae circa corpora operatur; aliqua tamen Deus in creatura corporea facit, quae nullo modo Angeli facere possunt; sicut quod suscitat mortuos, et illuminat caecos. Secundum quam virtutem etiam corpus primi hominis de limo terrae formavit. Potuit tamen fieri ut aliquod ministerium in formatione corporis primi hominis Angeli exhiberent; sicut exhibebunt in ultima resurrectione, pulveres colligendo.
Because the agent must be like its effect, it is not fitting that a pure form, not existing in matter, should produce a form which is in matter, and which form is only made by the fact that the composite is made.
Et quia oportet agens esse simile facto non convenit quod forma pura, quae est sine materia, producat formam quae est in materia, quae non fit nisi per hoc quod compositum fit.
So a form which is in matter can only be the cause of another form that is in matter, according as composite is made by composite.
Et ideo oportet quod forma quae est in materia, sit causa formae quae est in materia, secundum quod compositum a composito generatur.
Now God, though He is absolutely immaterial, can alone by His own power produce matter by creation: wherefore He alone can produce a form in matter, without the aid of any preceding material form.
Deus autem, quamvis omnino sit immaterialis, tamen solus est qui sua virtute materiam producere potest creando. Unde ipsius solius est formam producere in materia absque adminiculo praecedentis formae materialis.
An effect may be said to pre-exist in the causal aspects of creatures, in two ways.
Secundum rationes causales in creaturis dicitur aliquid praeexistere dupliciter.
First, both in active and in passive potentiality, so that not only can it be produced out of pre-existing matter, but also that some pre-existing creature can produce it.
Uno modo, secundum potentiam activam et passivam, ut non solum ex materia praeexistenti fieri possit, sed etiam ut aliqua praeexistens creatura hoc facere possit.
Secondly, in passive potentiality only; that is, that out of pre-existing matter it can be produced by God. In this sense, according to Augustine, the human body pre-existed in the previous works in their causal aspects.
Alio modo, secundum potentiam passivam tantum, ut scilicet de materia praeexistenti fieri possit a Deo. Et hoc modo, secundum Augustinum, corpus hominis praeextitit in operibus productis secundum causales rationes.
The movement of the heavens causes natural changes; but not changes that surpass the order of nature, and are caused by the Divine Power alone, as for the dead to be raised to life, or the blind to see: like to which also is the making of man from the slime of the earth.
Motus caeli est causa transmutationum naturalium, non tamen transmutationum quae fiunt praeter naturae ordinem, et sola virtute divina, sicut quod mortui resuscitantur, quod caeci illuminantur. Quibus est simile quod homo ex limo terrae formatur.
It is written (Sirach 17:1): "God created man out of the earth."
Dicitur Eccli. XVII, "Deus de terra creavit hominem."