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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.

:^(

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.

依隻野蒜蓉清蒸應該幾好味

:^(

:^(

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.

依隻野蒜蓉清蒸應該幾好味

:^(

:^(

:^(

界門綱目科屬種

個SYSTEM 好勁, 有D生物以為近親其實差條街; 相反有D以為無關就其實同源

廿幾頁先入嚟仲諗住已經講完恐龍
點知連三疊紀都未講到

:^(

順便賣吓廣告
嚟緊6月尾灣仔會展搞亞洲礦物, 寶石及化石展
到時會有外國參展商賣化石 (見過成條兩三米嘅魚龍化石擺喺度賣, 仲有成幅牆咁高嘅石板(河床)舖滿狼鰭魚

:^(

)
主辦方都會展出大型化石, 上年好似有始祖鳥同翼龍

廿幾頁先入嚟仲諗住已經講完恐龍
點知連三疊紀都未講到

:^(

順便賣吓廣告
嚟緊6月尾灣仔會展搞亞洲礦物, 寶石及化石展
到時會有外國參展商賣化石 (見過成條兩三米嘅魚龍化石擺喺度賣, 仲有成幅牆咁高嘅石板(河床)舖滿狼鰭魚

:^(

)
主辦方都會展出大型化石, 上年好似有始祖鳥同翼龍

普通人都入得？

廿幾頁先入嚟仲諗住已經講完恐龍
點知連三疊紀都未講到

:^(

順便賣吓廣告
嚟緊6月尾灣仔會展搞亞洲礦物, 寶石及化石展
到時會有外國參展商賣化石 (見過成條兩三米嘅魚龍化石擺喺度賣, 仲有成幅牆咁高嘅石板(河床)舖滿狼鰭魚

:^(

)
主辦方都會展出大型化石, 上年好似有始祖鳥同翼龍

其實無啦啦D魚點解會識得上陸地

同埋以前佢地隻隻都咁大隻，一獵食就好似世界大戰咁

:^(

:^(

:^(

:^(

化石時期： 泥盆紀(419.2–358.9百萬年前)–最近

鱟 (Horseshoe Crab)，又名「馬蹄蟹」、「夫妻魚」，為隸屬肢口綱劍尾目的海生節肢動物，被譽為活化石。現存的鱟種類僅存3屬4種。

鱟的祖先出現在地質歷史時期古生代的泥盆紀，當時恐龍尚未崛起，原始魚類剛剛問世，它是地球上最古老的動物之一。人們曾發現了距今5億年前的鱟化石，它與早已滅絕的三葉蟲是近親。有人也稱它為馬蹄蟹，其實它與蟹沒有關係，倒是跟蠍、蜘蛛有親緣。鱟是節肢動物肢口綱劍尾目動物，現存有3屬4種，分布在美洲和亞洲部分沿海中。中國長江口以南東、南海沿岸、廣西沿海、金門沿海、澎湖沿海等地有它們的身影。鱟隨著時間的推移，與它同時代的動物大都進化或者滅絕，而鱟從4億多年前問世至今仍保留其原始而古老的樣貌

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:^(

:^(

，所以鱟有「活化石」之稱。

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:^(

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:^(

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:^(

D血好似防癌

:^(

其實無啦啦D魚點解會識得上陸地

同埋以前佢地隻隻都咁大隻，一獵食就好似世界大戰咁

:^(

:^(

https://www.youtube.com/watch?v=mKxRe0hAQmg