|
#
|
Years Ago
(in Millions)
|
1998 Calendar Time
|
Event Description
|
|
1
|
390
|
12/1/98 1:19:16 a.m.
|
Earliest fossils of land animals deposited
|
|
2
|
360
|
12/3/98 10:27:05 a.m.
|
Earliest winged insects alive
|
|
3
|
345
|
12/4/98 3:00:00 p.m.
|
Paleozoic: Mississippian Period
|
|
4
|
330
|
12/5/98 7:34:55 p.m.
|
Much of continent land masses underwater
|
|
5
|
325
|
12/6/98 5:06:13 a.m.
|
Paleozoic Era: Pennsylvanian Period
|
|
6
|
320
|
12/6/98 2:37:31 p.m.
|
Earliest reptiles alive
|
|
7
|
290
|
12/8/98 10:45:21 p.m.
|
Earliest reptile fossils deposited
|
|
8
|
280
|
12/9/98 6:47:57 p.m.
|
Paleozoic Era: Permian Period
|
|
9
|
286
|
12/9/98 7:22:23 a.m.
|
Age of the amphibians
|
|
10
|
250
|
12/12/98 3:55:47 p.m.
|
Appalachian Mountains formed
|
|
11
|
245
|
12/12/98 1:27:05 p.m.
|
Age of the dinosaurs begins
|
|
12
|
225
|
12/14/98 3:32:18 a.m.
|
Last Trilobites died out
|
|
13
|
225
|
12/14/98 3:32:18 a.m.
|
Mesozoic Era: Triassic Period
|
|
14
|
210
|
12/15/98 8:06:13 a.m.
|
Volcanic activity in New England
|
|
15
|
208
|
12/15/98 11:54:44 p.m.
|
Earliest birds and mammals alive
|
|
16
|
200
|
12/16/98 3:08:50 a.m.
|
Earliest mammal fossils deposited
|
|
17
|
190
|
12/16/98 10:11:26 p.m.
|
Mesozoic Era: Jurassic Period
|
|
18
|
180
|
12/17/98 5:14:03 p.m.
|
Breakup of Pangaea began
|
|
19
|
160
|
12/19/98 7:19:16 a.m.
|
Earliest bird fossils deposited
|
|
20
|
144
|
12/20/98 1:47:26 p.m.
|
Earliest flowering plant alive
|
|
21
|
136
|
12/21/98 5:01:31 a.m.
|
Mesozoic Era: Cretaceous Period
|
|
22
|
135
|
12/21/98 6:55:47 a.m.
|
Earliest flowering plant fossil deposited
|
|
23
|
70
|
12/26/98 10:42:44 a.m.
|
Rocky Mountains formed
|
|
24
|
65
|
12/26/98 8:14:03 p.m.
|
Massive extinction of the dinosaurs
|
|
25
|
58
|
12/27/98 9:33:52 a.m.
|
Earliest grasses & division the of mammals
|
|
26
|
30
|
12/29/98 2:53:10 p.m.
|
Himalayas began forming
|
|
27
|
24
|
12/30/98 2:18:44 a.m.
|
Earliest primates
|
|
28
|
2.8
|
12/31/98 6:41:56 p.m.
|
Isthmus of Panama formed
|
|
29
|
5
|
12/31/98 2:29:42 p.m.
|
Living Australopithecus afarenis
|
|
30
|
3
|
12/31/98 6:18:13 p.m.
|
Living Australopithecus africanus
|
|
31
|
2
|
12/31/98 8:12:29 p.m.
|
Living Homo habilis
|
|
32
|
2
|
12/31/98 8:12:29 p.m.
|
Australopithecus robustus
|
|
33
|
1
|
12/31/98 10:06:44 p.m.
|
Living Australopithecus bosei
|
|
34
|
500,000 years ago
|
12/31/98 11:03:52 p.m.
|
Living Homo erectus
|
|
35
|
100,000 years ago
|
12/31/98 11:49:34 p.m.
|
Living Homo Sapiens (ancient)
|
|
36
|
50,000 years ago
|
12/31/98 11:55:17 p.m.
|
Living Neanderthals
|
|
37
|
10, 000 years ago
|
12/31/98 11:58:51 p.m.
|
The end of the last Ice Age
|
|
38
|
Present
|
12/31/98 Midnight
|
Living Homo Sapiens (modern)
|
