藍毛毛的演奏會
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太Q版，不了
PS4出過一隻叫Birthdays the Beginning既GAME
玩法係俾個世界你培養的生物出黎，由古生物慢慢養到有人類恐龍出黎真係幾正
仲要有中文版好好玩
太Q版，不了
:^(
傍觀
趁假期 答下你
係好耐，好耐之前............
有一D單細胞小生物，佢地身上開始有一種感光器官，叫 eyespots (眼點)
佢地只可以感應周圍既光暗
例如呢隻眼蟲藻（學名：Euglena）是生物裡的一個屬，屬於裸藻綱。
佢又唔係動物，又唔係植物。
其名字的來源是因為它們有眼點，它與趨光性有關。
2=眼點
眼點令眼蟲可以走去有光既地方，有趨光性。
跟住眼蟲有葉綠體，會進行光合作用。
後來既生物有多細胞eyepatch，
但平旦既設計，分唔到D光由邊度來，
因為邊度射來，都係sense到咁多光，
你只會知有無光射過來，唔知邊一度射過來
之後有D生物既eyespot有更多既感光蛋白質同發色團，又漸漸進化為一個凹洞，
唔同方向射過來既光，會刺激凹洞 (一個"cup"咁)既一部份，
咁就知道D光邊度射過來了
呢種原始既眼，一開始係原始既無脊椎生物上可見到，
例如原始蝸牛
今日既渦蟲 (Planarian) 上都可以見到
今日既渦蟲 (Planarian) 有 "cup"狀 eyespot，可以略為分到光既方向。
早期既凹洞eyespot都係唔太發達，色素不夠，又唔夠凹，
Feel下周圍光暗都係主要功能，分方向既能力未算好強
到將來色素再多D，再凹D，呢個能力先會變勁
發色團收到可見光，會放出訊號，射去神經系統，多數會去腦部
水母都有神經系統，但無腦部，所以訊號會直接去水母既肌肉
到左寒武紀大爆發 (Cambrian Explosion) [詳情請睇前面第8頁]
寒武紀(5 億 4100 萬年前 ～ 4 億 8500 萬年前 )時，
大部份生物既門都出現
眼睛發展一日千里，色素更多，形狀更凹，視覺能力更強
漸漸，生物隻眼再凹都無咩用，
因為佢地需要既，
係更準確既分光方向能力，同認形物件形狀能力，！
佢地需要隻眼既opening細D！
呢種眼，今日可以係鸚鵡螺身上搵到
佢地未有角膜，未有晶狀體，但已經進步唔少
後來眼睛外圍長出更多透明既細胞，幫助折射光線，而且保護眼睛不受感染
至於點解我地眼睛只會收到一部份光？ (人類眼睛只會見到︰390 to 700 nm的光)
其中一個好可能既原因，係因為早期生物係水中生物，發展出眼睛去幫助光合作用
而只有部份波長既光，先可以係水中穿透，
所以後來生物既眼，都唔會detect所有既光/電磁波，只揀部份
後來生物既眼就出現埋有晶狀體，幫助集中光線，幫助認獵物，睇環境
更有生物有前後移動晶狀體 / 拉扁推圓晶狀體 既能力，隨時調整focus
發展得更好了
比較想知眼呢種感光器官的演化
以前讀developmental biology已經覺得好神奇，complex eye果d直頭想像唔到係點develop出黎
趁假期 答下你
:^(
係好耐，好耐之前............
有一D單細胞小生物，佢地身上開始有一種感光器官，叫 eyespots (眼點)
佢地只可以感應周圍既光暗
例如呢隻眼蟲藻（學名：Euglena）是生物裡的一個屬，屬於裸藻綱。
佢又唔係動物，又唔係植物。
其名字的來源是因為它們有眼點，它與趨光性有關。
:^(
:^(
:^(
:^(
2=眼點
眼點令眼蟲可以走去有光既地方，有趨光性。
跟住眼蟲有葉綠體，會進行光合作用。
:^(
-------------------------------------------
後來既生物有多細胞eyepatch，
但平旦既設計，分唔到D光由邊度來，
因為邊度射來，都係sense到咁多光，
你只會知有無光射過來，唔知邊一度射過來
之後有D生物既eyespot有更多既感光蛋白質同發色團，又漸漸進化為一個凹洞，
唔同方向射過來既光，會刺激凹洞 (一個"cup"咁)既一部份，
咁就知道D光邊度射過來了
:^(
呢種原始既眼，一開始係原始既無脊椎生物上可見到，
例如原始蝸牛
今日既渦蟲 (Planarian) 上都可以見到
:^(
今日既渦蟲 (Planarian) 有 "cup"狀 eyespot，可以略為分到光既方向。
早期既凹洞eyespot都係唔太發達，色素不夠，又唔夠凹，
Feel下周圍光暗都係主要功能，分方向既能力未算好強
:^(
到將來色素再多D，再凹D，呢個能力先會變勁
發色團收到可見光，會放出訊號，射去神經系統，多數會去腦部
水母都有神經系統，但無腦部，所以訊號會直接去水母既肌肉
-------------------------------------------
到左寒武紀大爆發 (Cambrian Explosion) [詳情請睇前面第8頁]
寒武紀(5 億 4100 萬年前 ～ 4 億 8500 萬年前 )時，
大部份生物既門都出現
眼睛發展一日千里，色素更多，形狀更凹，視覺能力更強
:^(
漸漸，生物隻眼再凹都無咩用，
因為佢地需要既，
係更準確既分光方向能力，同認形物件形狀能力，！
佢地需要隻眼既opening細D！
呢種眼，今日可以係鸚鵡螺身上搵到
:^(
:^(
佢地未有角膜，未有晶狀體，但已經進步唔少
後來眼睛外圍長出更多透明既細胞，幫助折射光線，而且保護眼睛不受感染
至於點解我地眼睛只會收到一部份光？ (人類眼睛只會見到︰390 to 700 nm的光)
其中一個好可能既原因，係因為早期生物係水中生物，發展出眼睛去幫助光合作用
而只有部份波長既光，先可以係水中穿透，
:^(
所以後來生物既眼，都唔會detect所有既光/電磁波，只揀部份
後來生物既眼就出現埋有晶狀體，幫助集中光線，幫助認獵物，睇環境
更有生物有前後移動晶狀體 / 拉扁推圓晶狀體 既能力，隨時調整focus
發展得更好了
:^(
SUV
多謝你咁快手re我
因為得390-700nm入到水，所以眼先detect到呢個range真係第一次聽
之前睇paper見到，有種蝦的眼可以複雜到睇到plane of polarization of plane-polarized light添，雖然唔知有咩用
:^(
因為得390-700nm入到水，所以眼先detect到呢個range真係第一次聽
:^(
之前睇paper見到，有種蝦的眼可以複雜到睇到plane of polarization of plane-polarized light添，雖然唔知有咩用
:^(
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ゴードリセラス <=== Gaudryceras
アンモナイト の一種 <=== Ammonitida (=菊石) 的一種
菊石目
菊石目（學名Ammonitida）是一類已滅絕的頭足類。它們是非常好的指準化石，往往能連結起所在的地層與地質年代。菊石目的近親並非現今外觀相似的鸚鵡螺，反而是八爪魚、烏賊及魷魚等鞘亞綱。
菊石目的化石殼一般呈平旋狀，但也有呈垂直螺旋狀及非螺旋狀。老普林尼稱菊石目為「阿蒙的角」，因其殼的形狀像埃及神話阿蒙所配帶的羊角，其學名亦是以此來取的。[1]其下的屬亦多以希臘文「角」的字根來結尾。
Gaudryceras
一種生活於白堊紀的菊石
咁岩有化石睇 各位知唔知咩黎？ :^(
ゴードリセラス <=== Gaudryceras
アンモナイト の一種 <=== Ammonitida (=菊石) 的一種
菊石目
菊石目（學名Ammonitida）是一類已滅絕的頭足類。它們是非常好的指準化石，往往能連結起所在的地層與地質年代。菊石目的近親並非現今外觀相似的鸚鵡螺，反而是八爪魚、烏賊及魷魚等鞘亞綱。
菊石目的化石殼一般呈平旋狀，但也有呈垂直螺旋狀及非螺旋狀。老普林尼稱菊石目為「阿蒙的角」，因其殼的形狀像埃及神話阿蒙所配帶的羊角，其學名亦是以此來取的。[1]其下的屬亦多以希臘文「角」的字根來結尾。
Gaudryceras
一種生活於白堊紀的菊石
:^(
卡利古拉
https://en.wikipedia.org/wiki/Ancyloceratina
http://eol.org/pages/4784851/overview
第2隻都係菊石目
但查唔到Solenoceras係邊隻菊石
https://en.wikipedia.org/wiki/Ancyloceratina
http://eol.org/pages/4784851/overview
亢瓏有悔
屌 隻野個樣咁on9成個萬字夾咁樣
到底有咩用
<img src="https://holland.pk/aihpkz9o" />
仲有呢個
第1隻
Diplomoceras
都係菊石目
<img src="http://www.prehistoric-wildlife.com/images/species/d/diplomoceras-size.jpg" />
<img src="http://cdn.sci-news.com/images/enlarge2/image_3898e-Diplomoceras.jpg" />
<img src="http://www.geologicallocations.com/Fossils/diplomoceras.jpg" />
<img src="http://vignette2.wikia.nocookie.net/dinosaurs/images/4/47/Diplomite.jpg" />
<img src="https://31.media.tumblr.com/fd8b9bba9146d5073dac4aad079c2401/tumblr_n0803fsLGe1sh1ns2o2_1280.jpg" />
第2隻
查唔到
屌 隻野個樣咁on9成個萬字夾咁樣
到底有咩用
:^(
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While most ammonites had shells that wound tightly in a spiral, Diplomoceras was more unusual. The shells starts out straight before making a U-bend, then growing out back the other way before making another U-bend around. The shell then continues growing again until making yet another U-bend and turning back on itself, extending all the way back beyond the extent of the shell before the head opening appears.
The exact reason why Diplomoceras grew such an unusual shell is unknown. One reason could be so that species of Diplomoceras could recognise one another apart from the other species of ammonites that were swimming in the oceans at this time. A more streamlined shell may have also allowed for faster swimming similar to that of earlier orthocones, and may have allowed for a greater chance of predator evasion from the large shell crushing mosasaurs such as Proganthodon and Globidens that were common in the Late Cretaceous seas. This might also explain why Diplomoceras did not appear until the Campanian period of the late Cretaceous.
Whatever the reason why Diplomoceras grew such an unusual shell, the genus was clearly very successful. So far fossils of Diplomoceras have been found very common in Antarctica and Australia, but are also known from the Americas, Europe, Africa and also Japan, which combined with the Australian and Antarctic fossils suggest that Diplomoceras were common across most of the world’s oceans, until finally vanishing in the KT extinction at the end of the Cretaceous.
仲有呢個
第1隻
Diplomoceras
都係菊石目
第2隻
查唔到
生到彎位點獵槍.....
While most ammonites had shells that wound tightly in a spiral, Diplomoceras was more unusual. The shells starts out straight before making a U-bend, then growing out back the other way before making another U-bend around. The shell then continues growing again until making yet another U-bend and turning back on itself, extending all the way back beyond the extent of the shell before the head opening appears.
The exact reason why Diplomoceras grew such an unusual shell is unknown. One reason could be so that species of Diplomoceras could recognise one another apart from the other species of ammonites that were swimming in the oceans at this time. A more streamlined shell may have also allowed for faster swimming similar to that of earlier orthocones, and may have allowed for a greater chance of predator evasion from the large shell crushing mosasaurs such as Proganthodon and Globidens that were common in the Late Cretaceous seas. This might also explain why Diplomoceras did not appear until the Campanian period of the late Cretaceous.
Whatever the reason why Diplomoceras grew such an unusual shell, the genus was clearly very successful. So far fossils of Diplomoceras have been found very common in Antarctica and Australia, but are also known from the Americas, Europe, Africa and also Japan, which combined with the Australian and Antarctic fossils suggest that Diplomoceras were common across most of the world’s oceans, until finally vanishing in the KT extinction at the end of the Cretaceous.