HS, you want a Bible based answer for fossils and dinosaurs yea, would you like that?
Dinosaurs
Dinosaurs were created in the creation, and named by Adam, they are found in the book of Job, with two names I am not clever enought to spell, but for those who know of the 3 Tyranid Hivefleets, they share names (not Kraken,but behomoth and leviathan or summat). They also give a good description of what they looked like.
Why are there no more dinosaurs? The larger, and more dangerous ones would not have been able to fit on the Ark when God sent the Flood, and so would have drowned, smaller ones would have probally died out due to climate change and continent shifting, as pre flood it was assumed all the continents formed one giant landmass, (and so people are spread across the world.) Before the flood, there was no rain, the earth was watered by mist, after the flood, the waters were gathered to the north and south and became frozen, while some areas became deserts. Climate change occured, and so Dinosaurs would have died out as a result of colder weather, rain, and lack of food.
Fossils.
Fossils were formed during and immediately after the flood. As the weight of floodwaters pressed down, and the earth's surface became slit and sandy, bones would have been pressed into this mud, and the weight, heat and pressure would have caused the mud to set firm over them and preserve them after the waters receeded. There are miles of uncovered seabed where things could lie, and carbon dating and such are know to be inaccurate, as if you ask four people to record the date of one thing, you will have varying answers.
The Ark today.
The Bible records that the Ark came to rest atop mount Ararat (sp) in Turkey, and was preserved in galcial ice. Members of mountain parties reported seeing such a dark box like shape under the ice, and a monastry at the foot of the mountain was said to have been made from looted boards, however, unfortunately an avalance destroyed the monastry and a nearby village. In the early twenthy century (1915 I think,) the Russians dispatched a party. For days they stood on the mountain, recording things, and taking photos. Some say they found the Ark, others say they didn't. No one knows, when the party made it back to Russia, the Czar (sp) was overthrown in a Revolution and replaced with an atheistic Communist government, and the whole mission was forgotten, and any recordings were destroyed. Present weather conditions make other expaditions unsafe at this time.