As retribution for sin, God declared a series of curses in Genesis 3. Below are some relevant quotes from the chapter:
14 The Lord God said to the serpent, “Because you have done this, cursed are you above all livestock and above all beasts of the field; on your belly you shall go, and dust you shall eat all the days of your life. [Genesis 3:13, ESV]
17 And to Adam he said, “Because you have listened to the voice of your wife and have eaten of the tree of which I commanded you, ‘You shall not eat of it,’ cursed is the ground because of you; in pain you shall eat of it all the days of your life; 18 thorns and thistles it shall bring forth for you; and you shall eat the plants of the field. 19 By the sweat of your face you shall eat bread, till you return to the ground, for out of it you were taken; for you are dust, and to dust you shall return.” [Genesis 3:17-19, ESV]
Romans 5 and 1 Corinthians 15 shed more light on this:
12 Therefore, just as sin came into the world through one man, and death through sin, and so death spread to all men because all sinned— 13 for sin indeed was in the world before the law was given, but sin is not counted where there is no law. 14 Yet death reigned from Adam to Moses, even over those whose sinning was not like the transgression of Adam, who was a type of the one who was to come. [Romans 5:12-14, ESV]
17 For if, because of one man's trespass, death reigned through that one man, much more will those who receive the abundance of grace and the free gift of righteousness reign in life through the one man Jesus Christ. [Romans 5:17, ESV]
21 For as by a man came death, by a man has come also the resurrection of the dead. [1 Corinthians 15:21, ESV]
What I gather from these verses is that death entered the world because of Adam's fall. However, there is no explicit mention of animals being cursed with death, and instead the emphasis is placed on the death of human beings.
Question: did death enter the animal kingdom as part of the curses that followed the Fall (and not before)? If so, does this create any conflicts with secular theories that assume that massive animal extinctions (e.g. dinosaurs) took place before humans inhabited the Earth?