Dinosaurs vs. Humans

[SteveSS]

At most humans and their ancestors have been around for 6 million years. Civilizations for 6,000 years. Dinosaurs ruled the earth for 250-300 million years. Studying just the ocean going reptiles adapted to sea-life is fascinating but they're gone. Humans will have their extinction event just like like dinosaurs. This event will make room for another life group to rule the earth. The meteor stike 65 million years ago was like billions of nuclear bombs. It's just the way the universe works. All this is fairly recent geologic history.

That's what made me become a geologist. The time scales blow me away. Next time you pass a roadcut on a highway think of the time it took to form those rocks.

 

[Belvedere408]

I'm fascinated by the ancient earth and what we think has happened over the billion of years.

 

[dodgeboy440]

I'm fascinated by the ancient earth and what we think has happened over the billion of years.

It’s the work of the Creator in plain view !

 

[5.7 hemi]

So early humanoids were around with the dinosaurs according to foot prints in limestone.

 

[SteveSS]

Dinosaurs are technically still around. Birds are much more related than say alligators. It's in the hip joint mechanics. Nope humans weren't around 65 MYO. Dinos extinction lead to the age of mammals. Mammals like small marmots then progressed to more complex forms.

Think of this. You pick up a rock and crack it in half. You're the first human to ever see that or touch it. You can learn a lot from that rock and where it ended up in the grand scheme of things. Humans think in terms of hundreds of years, maybe thousands. Nobody can really grasp hundreds of millions or billions.

It's just shocking how long dinosaurs ruled the planet. Some big jumps took forever like from from prokaryotes to eukaryotes..

 

[Curiousyellow71]

Human footprints in the rock from all over the world.

 

[5.7 hemi]

Let’s not forget the footprints mixed with dinosaur footprints. That kinda blows the theory of “human/dinosaur” not living together.

 

[Davefinan]

I’m feeling like a dinosaur myself these days.

 

[SteveSS]

The coexistence of avian dinosaurs (birds) and humans is well established historically and in modern times. The coexistence of non-avian dinosaurs and humans exists only as a recurring motif in speculative fiction, because in the real world non-avian dinosaurs have at no point coexisted with humans.[1]

The notion that non-avian dinosaurs and humans actually coexisted at some time in the past or still coexist in the present is a pseudoscientific and pseudohistorical belief common among Young Earth creationists, cryptozoologists, and some other groups. This belief often contradicts the scientific understanding of the fossil record and known geological events. Supposed evidence presented for the idea that non-avian dinosaurs persisted to modern times has often been determined to have been a hoax.[2] Some proponents have tried to identify depictions of dinosaurs among ancient artwork or descriptions of cryptids, though such identifications are often based on outdated or incorrect ideas about dinosaur biology and life appearance[3][4] and often ignores the cultural/artistic context.[2]

Scientists consider the idea that non-avian dinosaurs survived to the present day to be untenable, with known cases of so-called "living fossils" (such as coelacanths) being far from analogous to large-bodied land vertebrates. It would require unprecedented ghost lineages without fossils for tens of millions of years and sharply contrast with the relatively good fossil record of dinosaurs and other groups in the Mesozoic.[4]

 

[dadsbee]

How are those car restorations coming......

 

[SteveSS]

Cryptids: Basically things like Nessi. The Loch Ness monster. Living Megladons.

​

 

[SteveSS]

Great. The '66 Corvette has fired up. New tires, gas tank, Rebuilt carb and brakes. The accelerator pump was leaking so its being rebuilt again. Nothing this weekend because of a snowstorm. Interesting change of subject when you felt cornered.

 

[Under Pressure]

I’m a plumber not a geologist so go easy on me.
What are your thoughts that the extinction started long before the asteroid theory with volcanism in India (Deccan Traps) and the Yucatán hit was just the nail in the coffin?
This topic has intrigued for many years

 

[DeltaV]

How are those car restorations coming......

They are becoming part of the geological record...

 

[gkent]

"Our" time is only based on the earth's daily rotations and annual rotation around the sun. I would not doubt for a moment that somewhere out there there is life that formed very soon after the big bang, has days that are as long as our centuries and is very advanced because their planet had no catastrophic life-ending events.

 

[Richard Cranium]

I’m feeling like a dinosaur myself these days.

It’s still better to be a living dinosaur than a dead fossil.

 

[WileE]

 

[1967coronet]

I'm waiting for Bob to weigh in on this one.
Before I form a opinion.

 

[zyzzyx]

All of this blows me away as in the time scale. And all this time our Sun has been burning fuel
for our warmth and light! WOW!

 

[SteveSS]

There have a lot of extinction events. The Cretaceous was the dinosaur one.

Period or supereon	Extinction	Date	Probable causes[2]
Quaternary	Holocene extinction	c. 10,000 BC – Ongoing	Humans[3]
Quaternary extinction event	640,000, 74,000, and 13,000 years ago	Unknown; may include climate changes, massive volcanic eruptions and Humans (largely by human overhunting)[4][5][6]
Neogene	Pliocene–Pleistocene boundary extinction	2 ous	Possible causes include a supernova[7][8] or the Eltanin impact[9][10]
Middle Miocene disruption	14.5 Ma	Climate change due to change of ocean circulation patterns. Milankovitch cycles may have also contributed[11]
Paleogene	Eocene–Oligocene extinction event	33.9 Ma	Multiple causes including global cooling, polar glaciation, falling sea levels, and the Popigai impactor[12]
Cretaceous	Cretaceous–Paleogene extinction event	66 Ma	Chicxulub impactor; the volcanism which resulted in the formation of the Deccan Traps may have contributed.[13]
Cenomanian-Turonian boundary event	94 Ma	Most likely underwater volcanism associated with the Caribbean large igneous province, which would have caused global warming and acidic oceans[14]
Aptian extinction	117 Ma	Unknown, but may be due to volcanism of the Rajmahal Traps[15]
Jurassic	End-Jurassic (Tithonian)	145 Ma	No longer regarded as a major extinction but rather a series of lesser events due to bolide impacts, eruptions of flood basalts, climate change and disruptions to oceanic systems[16]
Pliensbachian-Toarcian extinction (Toarcian turnover)	186-178 Ma	Formation of the Karoo-Ferrar Igneous Provinces[17]
Triassic	Triassic–Jurassic extinction event	201 Ma	Possible causes include gradual climate changes, volcanism from the Central Atlantic magmatic province[18] or an impactor[19]
Carnian Pluvial Event	230 Ma	Wrangellia flood basalts,[20] or the uplift of the Cimmerian orogeny
Olenekian-Anisian boundary event	247 Ma	Ocean acidification[21]
Smithian-Spathian boundary event	249 Ma	Late eruptions of the Siberian Traps
Griesbachian-Dienerian boundary-event	252	Late eruptions of the Siberian Traps[22]
Permian	Permian–Triassic extinction event	252 Ma	Large igneous province (LIP) eruptions [23] from the Siberian Traps,[24] an impact event (the Wilkes Land Crater),[25] an Anoxic event,[26] an Ice age,[27] or other possible causes
End-Capitanian extinction event	260 Ma	Volcanism from the Emeishan Traps,[28] resulting in global cooling and other effects
Olson's Extinction	270 Ma	Unknown.[29][30][31] Possibly a change in climate, but evidence for this is weak.[32] This event may actually be a slow decline over 20 Ma.[33]
Carboniferous	Carboniferous rainforest collapse	305 Ma	Possibilities include a series of rapid changes in climate, or volcanism of the Skagerrak-Centered Large Igneous Province[34]
Serpukhovian extinction	~ 325 Ma	Onset of the Late Paleozoic icehouse
Devonian	Hangenberg event	359 Ma	Anoxia, possibly related to the Famennian glaciation or volcanic activity, Supernova[35]
Late Devonian extinction (Kellwasser event)	372 Ma	Viluy Traps[36][37][38] Woodleigh Impactor?[2]
Taghanic Event	~384 Ma	Anoxia
Kačák Event	~388 Ma	Anoxia
Silurian	Lau event	420 Ma	Changes in sea level and chemistry?[39]
Mulde event	424 Ma	Global drop in sea level?[40]
Ireviken event	428 Ma	Deep-ocean anoxia;[41] Milankovitch cycles?[42]
Ordovician	Late Ordovician mass extinction	445-444 Ma	Global cooling and sea level drop, and/or global warming related to volcanism and anoxia[43]
Cambrian	Cambrian–Ordovician extinction event	488 Ma	Kalkarindji Large Igneous Province?[44]
Dresbachian extinction event	502 Ma
End-Botomian extinction event	517 Ma
Precambrian	End-Ediacaran extinction	542 Ma	Anoxic event[45]
Great Oxygenation Event	2400 Ma	Rising oxygen levels in the atmosphere due to the development of photosynthesis as well as possible Snowball Earth event. (see: Huronian glaciation.)

Marine extinction intensity during Phanerozoic
%
Millions of years ago
(H)
K–Pg
Tr–J
P–Tr
Cap
Late D
O–S

The blue graph shows the apparent percentage (not the absolute number) of marine animal genera becoming extinct during any given time interval. It does not represent all marine species, just those that are readily fossilized. The labels of the traditional "Big Five" extinction events and the more recently recognised Capitanian mass extinction event are clickable links; see Extinction event for more details. (source and image info)