Eocene fauna

Eocene fauna

La Zamanin Eocene yana ɗaya daga cikin waɗanda suka kafa zamanin Paleogene na Zamanin Cenozoic. A wannan lokacin akwai canje-canje masu girma daga mahangar ƙasa da nazarin halittu, tun da yake manyan tsaunuka sun samu ne saboda haɗuwar nahiyoyi. Wadannan motsi na nahiyoyi sun haifar da Eocene fauna za a iya haɓaka ta kuma haɓaka a cikin manyan jeri.

A cikin wannan labarin zamu gaya muku game da duk halaye da haɓaka tarkon Eocene.

Babban fasali

Zamanin Eocene ya kai kimanin shekaru miliyan 23. An rarraba shi a cikin shekaru 4 alama ta wasu canjin yanayi, yanayin ƙasa da faunal. Anyi la'akari da lokacin sauye-sauye wanda duniya tayi wasu canje-canje a matakin ilimin kasa tun lokacin da aka haifar da babbar nahiyar Pangea ta karye. Wannan shine yadda aka kirkiro nahiyoyin kamar yadda muka sansu a yau.

Akwai canje-canje da yawa na yanayi masu matukar mahimmanci tunda akwai wasu abubuwan da suka faru da ke adawa da Paleogene. Misali, muna da waki'ar Azolla wacce ta haifar da karuwar yanayin muhalli na duniya ta yadda zai haifar da wasu yanayi wanda dole ne halittu su daidaita. Hakanan akwai wani canji a canjin canjin yanayi wanda ya haifar da raguwa a ciki. Duk abubuwan da suka faru sauyin yanayi sun haifar da sakamako ga halittun da suka mamaye duniyar a wannan lokacin.

Tsuntsaye suna ɗaya daga cikin ƙungiyoyin da suka sami babban ci gaba a wannan lokacin. Yawancin waɗanda suka zauna a duniyar duniyar sun kasance manyan dabbobi masu girman kai. Jimlar rarrabuwa ta babbar nahiyar Pangea shine ya haifar ko yalwata yawancin dabbobi da tsirrai.

Zamuyi nazarin yadda dukkan fure da fauna na Eocene suka samo asali.

Flora

A wannan lokacin yanayin muhallin wannan duniyar tamu ya ba da damar haɓaka nau'ikan tsire-tsire da dabbobi da yawa. Lokaci ne da yawancin halittu masu yawa suka yi godiya ga yanayi mai danshi da dumi.

Yin nazarin flora mun gano cewa canji ne sananne sosai. Lokacin da yanayin zafi yayi dumi da danshi a farkon Eocene, duniya tana da yalwar daji da gandun daji. Akwai shaidar da ke cewa sandunan ma suna da gandun daji a wannan lokacin. Abun haɗin kai wanda ya kiyaye ƙarancin ƙarancin tsire-tsire shine yanayin yanayin hamada a cikin cibiyoyin nahiyoyi.

Shuke-shuke da suka ci gaba sosai a wannan lokacin sune metasequoia da cupresaceae dangi. Wadannan na karshen sune wadanda suke cikin kungiyar wasan motsa jiki, kasancewar suna da matattakala. Itungiyar tsirrai ne mai dacewa sosai kamar yadda zasu iya zama kanana da babba. Ganyayyakinsa sunyi kama da ma'auni kuma an shirya su kusa da juna. Wasu daga cikinsu suna sakin abin da ya fi dadi.

Eocene fauna

Eocene Fauna Tsuntsaye

Anan ne muke maida hankali akan fa'idodin Eocene. Zamu iya cewa fauna a wannan lokacin sun yadu sosai. Kungiyoyin dabbobi masu shayarwa da tsuntsaye sune suka fi fice. Zamuyi nazarin dukkan kungiyoyin.

Invertebrates

Ya ci gaba da haɓaka abubuwa kaɗan musamman a cikin yanayin ruwan teku. Akwai adadi mai yawa na molluscs, daga cikinsu akwai gastropods, bivalves, echinoderms da cnidarians. Hakanan Arthropods ya samo asali a wannan lokacin, tare da tururuwa mafi wakilci.

Aves

Tsuntsaye sune wadancan jinsunan da suka bunkasa mafi yawanci saboda kyakyawan yanayin muhalli. Wasu nau'ikan halittu masu tsananin karfi sun ba wasu rukuni biyu na rayayyun halittu kuma suna matukar jin tsoro a lokacin. Daga cikin nau'in tsuntsayen da suka bunkasa kuma suka fi yawa akwai: Phorusrhacidae, Gastornis da penguins. Zamuyi bayanin halayen kowannensu:

  • Darshanna: Rukuni ne na tsuntsaye waɗanda babban halayyar su shine girman ta. Wasu samfurin sun kai tsayin mita 3. Ana iya tabbatar dashi ta hanyar godiya ga tarin burbushin halittu da suke wanzuwa yanzu. Kwanan nan, ana iya samun wasu kokon kan waɗannan dabbobin don a gano su da kyau. Wani halayyar reshe shine ikon tashi. Koyaya, ya cika shi da sauri. Ana tunanin cewa sun kai saurin kilomita 50 a cikin awa daya. Sun kasance masu saurin farautar kananan dabbobi, gami da wasu dabbobi masu shayarwa.
  • Gastornis: An san shi da tsuntsu na ta'addanci. Wannan saboda suna da ban tsoro sosai. Daga cikin sanannun halayenta mun sami girmansa, tare da wasu samfurin har zuwa mita 2 kuma fiye da kilo 100 a nauyi. Babban shugaban su da gajere, jikinsu mai ƙarfi ya sa su zama abin tsoro. Bakin bakin ya yi kama da wanda aku ke da shi a yau. Thearfin kyawawan abubuwa ya kasance mai ban sha'awa kuma ya yi aiki don kama abincinsu. Kodayake bai tashi sama ba, yana da saurin gaske.
  • Penguins: Isungiyar bas ne marasa tashi. Wannan rukunin ya wanzu har zuwa yau kuma yana cikin Antarctica a gindin kudu. A wannan lokacin an yi imanin cewa suna zaune a yankin Kudancin Amurka. Wannan sananne ne saboda wasu burbushin da aka gano daga wannan shafin. Akwai wasu samfura waɗanda aka auna har zuwa 1.5 da sauran ƙananan.

Eocene Fauna: dabbobi masu rarrafe da dabbobi masu shayarwa

Dabbobi masu rarrafe sun wanzu kuma sun ci gaba cikin sauri. Waɗanda suka wanzu mafi yawan su manyan macizai ne, masu tsayin sama da mita 10 a cikin wasu samfuran.

Game da dabbobi masu shayarwa, wannan rukunin ya kara yaduwa, musamman ungulaye, dabbobi da wasu manyan dabbobi masu cin nama. Bari mu bincika kowane ɗayansu:

  • Ngara: Babban halayyar sa shine cewa tana iya matsar da tallafi a ƙarshen yatsun sa. Anan muna da aladu da rakuma, shanu, tumaki da awaki.
  • Cetaceans: sun bunkasa a cikin yanayin ruwa kuma akwai jinsuna kamar su archaeocetos. Waɗannan sune farkon waɗanda suka haɓaka halaye waɗanda suka basu damar dacewa da rayuwar ruwa.
  • Ambulocytids: sune farkon whales din da suka wanzu a wannan duniyar tamu. Suna da tsayin fiye da mita 3 kuma nauyin su na iya kusan kilogram 120. Yana da kama da kamannin kada kodayake tare da dogayen gabobi. Waɗannan gabobin sun zama ƙira don motsawa. Abincin su mai cin nama ne.

Ina fatan cewa tare da wannan bayanin zaku iya koyo game da fa'idodin Eocene.


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