Early Cretaceous
























































































System/
Period
Series/
Epoch
Stage/
Age
Age (Ma)

Paleogene
Paleocene
Danian
younger

Cretaceous
 Upper/
Late
Maastrichtian
 66.0
 72.1

Campanian
 72.1
 83.6

Santonian
 83.6
 86.3

Coniacian
 86.3
 89.8

Turonian
 89.8
 93.9

Cenomanian
 93.9
 100.5
Lower/
Early
Albian
 100.5
 ~113.0

Aptian
 ~113.0
 ~125.0

Barremian
 ~125.0
 ~129.4

Hauterivian
 ~129.4
 ~132.9

Valanginian
 ~132.9
 ~139.8

Berriasian
 ~139.8
 ~145.0

Jurassic
Upper/
Late
Tithonian
older
Subdivision of the Cretaceous system
according to the ICS, as of 2017.[1]

The Early Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 146 Ma to 100 Ma.


During this time many new types of dinosaurs appeared or came into prominence, including ceratopsians, spinosaurids, carcharodontosaurids and coelurosaurs, while survivors from the Late Jurassic continued.


Angiosperms (flowering plants) appeared for the first time during the Early Cretaceous.[2] This time also saw the evolution of the first members of the Neornithes (modern birds).[3]



See also



  • Geologic Period


References





  1. ^ http://www.stratigraphy.org/index.php/ics-chart-timescale


  2. ^ Sun, G., Q. Ji, D.L. Dilcher, S. Zheng, K.C. Nixon & X. Wang 2002. Archaefructaceae, a New Basal Angiosperm Family. Science 296(5569): 899–904.


  3. ^ Lee, Michael SY; Cau, Andrea; Naish, Darren; Dyke, Gareth J. (May 2014). "Morphological Clocks in Paleontology, and a Mid-Cretaceous Origin of Crown Aves" (PDF). Systematic Biology. Oxford Journals. 63 (1): 442–449. doi:10.1093/sysbio/syt110. PMID 24449041..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output .citation q{quotes:"""""""'""'"}.mw-parser-output .citation .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .citation .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-maint{display:none;color:#33aa33;margin-left:0.3em}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}













-

這個網誌中的熱門文章

MGP Nordic

圖片
MGP Nordic Also known as Melodi Grand Prix Nordic Genre Song contest Created by DR Country of origin Denmark No. of episodes 5 contests Production Production location(s) Scandinavia Running time Various Distributor Nordvision Release Original network DR, NRK, SVT (2002–09) Yle Fem (2007–09) Original release 27 April 2002  ( 2002-04-27 )  – 28 November 2009  ( 2009-11-28 ) Chronology Preceded by De unges Melodi Grand Prix Related shows Dansk Melodi Grand Prix Junior Eurovision Song Contest MGP Nordic ( Melodi Grand Prix Nordic ) was a Scandinavian song contest for children aged 8 to 15, organized by DR, NRK, SVT and Yle through Yle Fem. It originated as a 2000 spin-off of Denmark's Eurovision Song Contest national final known as De unges Melodi Grand Prix , but expanded to become MGP Nordic in 2002 with the addition of Norway and Sweden. Contents 1 History 2 National selections 3 List of contests 4 ...
閱讀完整內容

Xamarin.form Move up view when keyboard appear

圖片
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 0 I'm trying to build a Chat app UI, the idea of the Layout was pretty simple: When the input bar is focused, keyboard show up and "push" up the chat bar, as it's a grid, the ListView will resize to fit the screen: I update the input bar's margin to "push" it up: NSValue result = (NSValue)args.Notification.UserInfo.ObjectForKey(new NSString(UIKeyboard.FrameEndUserInfoKey)); CGSize keyboardSize = result.RectangleFValue.Size; if (Element != null){ Element.Margin = new Thickness(0, 0, 0,keyboardSize.Height); //push the entry up to keyboard height when keyboard is activated } And this is ...
閱讀完整內容

Post-Redirect-Get with Spring WebFlux and Thymeleaf

圖片
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 2 Can someone explain to me how to implement the post-redirect-get pattern in Spring WebFlux and Thymeleaf? What subscribes on the database save method? @GetMapping("/register") public String showRegisterForm(Model model) { model.addAttribute("user", new User()); return "register"; } @PostMapping public String processRegisterForm(@Valid User user, BindingResult bindingResult) { if (bindingResult.hasErrors()) { return "register"; } else { userRepository.save(user); //what subscribes on this? //how to redirect on e.g. "/login"? ...
閱讀完整內容