- LITLHAKISO TSA SEBELE
- Nako ea bophelo le sebaka sa eona sa bolulo (nako): Linako tsa Triassic - Cretaceous (qalo) (hoo e ka bang ka selemo sa 199,6 - 65,5 limilione tse fetileng)
- E Fumane: ka lekhetlo la pele ka 1824, England
- 'Muso: Liphoofolo
- Era: Mesozoic
- Mofuta: Chordates
- Sehlopha: Bo-ralitaba
- Sehlopha: Lintho tse phetoang
- Squadron: Zavroperterigia
- Lelapa: Plesiosaurus
- Genus: Notosaurs
Ho bona litšoantšong tsa kholumolumo ena e kholo, e kholohali, batho ba bangata ba e ferekanya le Loesses Monster. Ho na le litlatsetso tse 'maloa tsa li-plesiosaurs - li-pliosaurs tse telele le tse khutšoane.
Plesiosaurus e ne e le kholo, e lula ka tlas'a metsi, 'me ts'ireletso ea mantlha e ne e le masapo a eona a sa senyeheng, ka lebaka leo masapo a eona a ntseng a bolokiloe hantle ho feta a mang kaofela.
U jele eng le mokhoa ofe oa bophelo
Ho lula maoatle le maoatle. Litopo tsa Plesiosaurus li fumanoe lik'honthinenteng tsohle, esita le ho Antarctica. Hoo e ka bang bophelo bohle ba ka boo ke neng ke bo qeta ke le ka tlasa metsi, ka linako tse ling ke ne ke tlameha ho tla ho hema moea. Hape, nako le nako, batho ba nang le molala o molelele ba ne ba tsoa ho tšoara linonyana tse fofang bakeng sa lijo, hobane bolelele ba molala bo ne bo ba lumella habonolo ho etsa sena, empa leha ho le joalo lijo tse ka sehloohong e ne e le litlhapi. Joaloka moholo-holo oa eona, notosaurus, plesiosaurus e behela mahe lehlabatheng.
Hobane ho ne ho na le mefuta e 'maloa ea Bo-Pislosaurs, ba ne ba tsoma ka tsela e fapaneng. Mekholutsoane e mokhuts'oane e ne e potlakile haholo 'me e hlasela phofu e kholo e le haufi, e theola boima bohle ba' mele ea bona ho motho eo. Ka lebaka la molala oa eona o molelele, matloana ana a malelele a ne a sebelisa mokhoa oa bolotsana, a lata lihlapi tse tsoang hole le ho sesa ka sekhukhu ka lihlooho, 'me ka mor'a moo ba tšoara phofu ea bona e sa lebelloang.
Lintlha tsa sebopeho sa 'mele
Plesiosaurus e ne e le mokoka o moholo, 'mele o ne o tšoana le moqomo, molala le matsoho le mefuta e fapaneng e fapaneng ka bolelele le bophara. Mohatla o pharalletseng, empa ho e-na le hoo o ne o sebeletsa ho sesa ka metsing. Letlalo le ne le le matla haholo 'me le entse tšireletso e tšepahalang ea' mele le litho ho tsoa khatello ea metsi, e ne e le bohlokoa bakeng sa pangolin, hobane o ne a rata ho theohela botebong ba leoatle 'me a rue molemo likolong tsa litlhapi.
Phapang
Ho na le likarolo tse peli tsa "plesiosaurs" - li-plesiosaur tse telele (li kenyeletsa lelapa la cymoliazavros) le li-pliosaurids tse khutšoane.
Li-plesiosaurs tse kholo ka ho fetisisa ke li-pliosauroids tsa genera Kronosaurus (Khonosaurus) ho tsoa Upper Cretaceous ea Australia le lyopleurodon (Liopleurodon) ho tsoa Upper Jurassic ea Europe, Russia le Amerika Boroa. Ka bobeli, 'me e' ngoe e ka fihla bolelele ba 15 m.
Ho Tsamaea ha BBC le liDinosaurs ho kentse li-lyopleurodon tse kholo tsa limithara tse 25. Empa lipalo-palo tsena lia feteletsoa. Masala ao ho nahanoang hore ke a setho se seholohali sa lyopleurodon ho tsoa Engelane ehlile e ne e le a letse la dinosaur tse kholo. Leha ho le joalo, ka 2005, mesaletsa ea pliosaurus e kholo e fumanoe Mexico, bolelele ba eona, bo lekanyang lipalo, bo fihlile ho m 20. Empa lipalo tsena ke tsa kelello.
Moruo
lilemo tse limilione | Nako | Era | Aeon |
---|---|---|---|
2,588 | Le | ||
Kai empa kaho | F le n e R ka s ka th | ||
23,03 | Neogene | ||
65,5 | Paleogen | ||
145,5 | sengoathoana | M e s ka s ka th | |
199,6 | Yura | ||
251 | Triassic | ||
299 | Permian | P le l e ka s ka th | |
359,2 | Carbon | ||
416 | Devonia | ||
443,7 | Silur | ||
488,3 | Ordovologist | ||
542 | Cambrian | ||
4570 | Precambrian |
- SehlophaSauropterygia
- Pistosaurus
- Order: Bo-ralitaba (Plesiosauria)
- Suborder Plesiosauroidea
- Plesiopterys
- Lelapa la Plesiosauridae
- Letlotlo Euplesiosauria
- E kholo Cryptoclidoidea
- Cryptoclididae Lelapa
- Letlotlo Tricleidia
- Lelapa la Tricledidae
- Lelapa la Cimoliasauridae
- Lelapa la Polycotylidae
- Lelapa Elasmosauridae
- E kholo Cryptoclidoidea
- SuborderPliosauroidea
- Bishanopliosaurus
- Megalneusaurus
- Pachycostasaurus
- Sinopliosaurus
- Thalassiodracon
- Archaeonectrus
- Attenborosaurus
- Eurycleidus
- Lelapa la Rhomaleosauridae
- Lelapa la Leptocleididae
- Lelapa la Pliosauridae
- Suborder Plesiosauroidea
Ho tsala
Khang mabapi le mekhoa ea ho ikatisa ea li-plesiosaurs e ntse e tsoela pele ka lilemo tse 200.
Litsebi tse ngata li ne li lumela hore ka lebaka la boima bo boima ho ne ho le thata ho fihla maoatleng le ho behela mahe, ka mantsoe a mang, ba tlameha ho ba viviparous. Bopaki ba pele bo tobileng ba sena bo fumanoe kamora ho ithuta ka hloko ka lesapo la mesaletsa ea lintho tsa khale (ba ne ba le mokatong o ka tlase oa Museum of Natural History Los Angeles ka lilemo tse ka bang 20).
Baetapele ba setso sa lefats'e
Bo-ralitaba ba hlahile mesebetsing e mengata ea bonono. Buka ea pele moo plesiosaurus e boletsoeng e le leeto la Jules Verne ho Setsi sa Lefatše, moo ho fumanoang plesiosaurus e telele e telele. Bukeng ea A. Conan-Doyle "Lefats'e Le Lahlehileng", ho ile ha buuoa ka ntho e nyane ea metsi a hloekileng e neng e lula letšeng le bohareng ba lehoatata. Bukeng ea V.A. Obruchev ho na le tlhaloso ea li-plesiosaurs tse peli tse loanelang litlhapi. Setšoantšo se tšepahalang ka ho fetisisa sa plesiosaur se fumanoa mosebetsing oa Harry Adam Knight "Carnosaurus".
Ba-Plesiosaurs le bona ba hlahile lifiliming tse ngata. Filimi e tummeng ka ho fetesisa le e hopoloang ke filimi e tšosang ea Majapane le Legend of the Dinosaur le filimi ea Brithani ea Letsoai e Neng e Lebetsoe ke Nako.
Ka lifilimi, li-plesiosaurs li ne li emeloa haholo ke liphoofolo tsa litonanahali tsa mali tse matla. Empa setšoantšo sena se hole haholo le 'nete. Ka nnete, li-plesiosaurs li ile tsa hlaha lenaneong la thelevishene la BBC Ho Tsamaea le Li-Dinosaurs.
The plesiosaurus e hlaha ka karolo ea 22 ea nako ea 3 ea X-li-file li-Quagmire.
Ba-Plesiosaurs ba hlahile hape lipapaling tsa video Dinosaur Crisis 2 le Turk: Evolution.
Baetapele ba litšōmong tsa sejoale-joale
- Nessie ea tsebahalang, eo ho ka etsahalang hore o lula Letšeng la Scotland la Loch Ness, ho latela bafuputsi ba bang, e ka ba moemeli oa ho qetela oa li-plesiosaurs. Ho boleloa hore bo-ralitaba ke bo-ralitaba. Matša ana kaofela a sebakeng se phahameng sa North Hemisphere mme a na le liphoso tsa karst tlase.
Lintlha
- ↑De la Beche, H.T., le W.D. Conybeare, 1821, "Tsebiso ea ho sibolloa ha phoofolo e ncha, e theha khokahano lipakeng tsa Ichthyosaurus le likoena, hammoho le litlhaloso tse akaretsang mabapi le botaki ba Ichthyosaurus", Phetohelo ea Geological Society ea London5: 559—594.
- ↑Bo-ramahlale ha baa beha mahe
Bona hore na "Bo-ralitaba" ke ba bang ba ho lidikishinari tse ling:
Bo-ralitaba - seterata sa limela tse nyamelang tsa metsing tsa sehlopha sa sauroperigia. Bolelele ho fihlela ho 15 m. Ba ne ba e-na le molala o molelele. E tsejoa ho tloha Middle Triassic ho ea Morao Cretaceous libakeng tsa maoatle tsa lik'honthinente tsohle (ntle le Antarctica), ho kenyeletsoa le Russia (sebakeng sa Volga, ... ... Big Encyclopedic Dictionary
Bo-ralitaba - (Plesiosauria), se ka tlisoang ke lintho tse nyamisitsoeng tse feteletseng. sauroterigius. E tsejoa ho tloha Middle Triassic ho ea Late Cretaceous ea Eurasia, Afrika, Australia, Amerika, sebakeng seo. USSR sebakeng sa Volga, sebakeng sa Moscow, Ukraine, naheng ea Urals, Siberia. O finyeletse katleho ho Jurassic ... Biological Encyclopedic Dictionary
mahlolo - seterata sa limela tse nyamelang tsa metsing tsa sehlopha sa sauroperigia. Bolelele ho fihlela ho 15 m. Ba ne ba e-na le molala o molelele. Li tsejoa ho tloha Middle Triassic ho isa Late Cretaceous lits'ebetsong tsa maoatle tsa lik'honthinente tsohle (ntle le Antarctica), ho kenyeletsoa le Russia (sebakeng sa Volga, ... ...
Bo-ralitaba - (Plesiosauria) semelo se seholo ka ho fetesisa sa lintho tse ngata tse epolotsoeng tsa sauroopterygian ea li-subclass tsa li-synaptosaurs (Bona. Synaptosaurs). Ba ne ba lula ho Triassic Cretaceous. 'Mele o bolelele ba limilimithara tse 15, li-vertebrae li 100 150 tse nang le sefahleho se sephara se sephara, ... Great Soviet Encyclopedia
Bo-ralitaba - Suborder ea limela tse felileng. reptile hape neg. sauroperigia. Bakeng sa ho fihlela limilimithara tse 15. Ba ne ba e-na le molala o molelele. E tsejoa ho tloha cf. Triassic ho Late Cretaceous ka lefu la seoa. mesifa ea lik'honthinente tsohle (ntle le Antarctica), ho kenyeletsoa le sebaka. Russia (Kgaolo ya Volga, kgaolo ya Moscow, Siberia). P. ... ... Mahlale a tlhaho. encyclopedic Dictionary
mahlolo - (gr. Plesios close +. Saur) sehlopha sa liphoofotsoana tse kholo tsa maoatle tsa mehleng ea Mesozoic tse nang le sephaka se senyane le molala o molelele, qalong li ne li lokela ho amana le li-plesiosaurs tse nang le mekholutsoane, e hlahang ka lebitso (bona le pliosaurs) ... ... mantsoe a tsoang kantle ho naha a Russia puo
Moreri -? Kingdom Plesiosaurus Plesiosaurus Saense ea Lihlopheng tsa 'Muso: Mofuta oa Liphoofolo: Sehlopha sa Chordata: Reptiles ... Wikipedia
Kakaretso ea kakaretso4 - Liphoofotsoana ha li bapisoa le li-amphibians li emela mohato o latelang oa ho feto-fetoha ha methapo ea maoto ho phela lefatšeng. Tsena ke li-vertebrates tsa 'nete tsa lefats'e tsa pele, tse khetholloang ke hore li tsoala naheng ka mahe, li phefumoloha ... ... Biological Encyclopedia
TLHOKOMELO - Saense ea sebopeho le nalane ea lefats'e. Lintho tsa mantlha tsa ho etsa lipatlisiso ke mafika, a bonts'ang rekoto ea lefats'e ea lefats'e, le ts'ebetso le mekhoa ea sejoale-joale e sebetsang holim 'a eona le mala. ...
Pliosaurids -? † Pliosaurids Pliosaur ... Wikipedia
Pale ea ho sibolla
Mesaletsa ea masapo a masapo a lintho tsa khale ke tse ling tsa mesaletsa ea pele ea lintho tse nyamisitsoeng tse sa tsebeng letho tse tsebahalang ka saense. Ka 1605, Richard Verstegen oa Antwerp, o ile a etsa papiso mosebetsing oa hae vertebrae ea pele ea li-plesiosaurus, empa a ba nka e le masapo a lihlapi tsa khale, o ile a boela a hlahisa maikutlo a hae hore Great Britain e kile ea hokahana le kontinenteng ea Europe. Ka 1699, Edward Lewid, mosebetsing oa hae, o ile a kenyelletsa le litšoantšo tsa masapo a plesiosaurus, a neng a ntse a nkuoa e le li-vertebrae tsa mofuta oa mofuta. Ichthyospondyli. Litsebi tse ling tsa tlhaho ea lekholo la bo17 la lilemo, tse kang John Woodward, li ile tsa fumana masapo a pokello ea tsona, 'me li ntse li ka bonoa le kajeno Setsing sa Pokello ea Sedgwick, Univesithing ea Cambridge, England.
Pele Plesiosaurus Fossil, 1719
Ka 1719, monna oa Lenyesemane ea bitsoang William Stuckley o ile a bua ka sesepa sa pele sa sebapali se seng sa maiketsetso se ileng sa tsebisoa ke Robert Darwin, oa Elston. Lejoe le neng le entsoe ka mesaletsa ea lintho tsa khale le ile la chekoa sebakeng se haufi le toropo ea Fulbek. Stuckley o ne a lumela hore masapo ana a emela mofuta o mong oa sebopuoa sa leoatleng, mohlomong e leng likoena kapa dolphin. Kajeno, sampole ena, tlasa palo ea tlhaiso BMNH R.1330, e bolokiloe pokellong ea nalane ea nalane ea tlhaho ea London mme ke sesepa sa pele sa liphoofolo tse fumanehang metsing tse tsoang pokellong ea pokello ea nalane.
Plesiosaurus dolichodeirus (W. Conybeare, 1824)
Mathoasong a lekholo la bo19 la lilemo, li-plesiosaurs li ne li ntse li sa tsejoe hantle. Kamora moo, ka 1821, skeleton e 'ngoe ea likhechana, e tsoang pokellong ea Thomas James Birch, e hlalositsoe ke William Coniber le Henry Thomas De la Beche tlasa mofuta o mocha oo ba o bitsitseng plesiosaurus - Plesiosaurus. Lebitso leo le ne le nkiloe ho tsoa ho Senyesemane sa Greek πλήσιος (plesios) - "haufi" le saurus ea Selatine, e bolelang "mokholutsoane" mme e bolela hore plesiosaurus e ne e le haufi le lihahabi tse ling, joalo ka koena, ho feta ichthyosaurs, e neng e na le sebopeho se tšoanang le sa tlhapi. Likhechana tsa ketsahalo ena li pokellong ea nalane ea nalane ea nalane ea nalane ea tlhaho, University of Oxford.
Plesiosaurus e fumanoeng ke Mary Enning ka December 1823
Nakoana ka mor'a moo ho ile ha latela lintho tse ncha tse khahlisang. Ka 1823, Thomas Clark o ile a tlaleha lehata le neng le batla le felletse la plesiosaurus (mohlomong e le la genus thalassiodracon Thalassiodracon), e hlalositsoeng ke British Geological Survey e le mohlala oa BGS GSM 26035. Ka selemo sona seo, setsomi sa mesaletsa ea lintho tsa khale, Mary Anning, o ile a fumana sesepa se batlang se felletse sa Lyme Regis, haufi le Dorset, lithutong tseo kajeno li bitsoang "Lebopo la Jurassic." Kopi e ile ea rekoa ke 'Musisi oa Buckingham, ea ileng a fana ka eona hore e ithutoe ke Moprofesa William Buckland. Ka la 24 Hlakubele 1824, mohlala ona o ile oa hlahisoa ke William Coniber puong e fanoeng ke Geological Society ea London tlasa tataiso ea Plesiosaurus dolichodeirus, lebitso la mefuta le bolela "e nang le melala e telele", kopanong e le 'ngoe, sekhono se secha - megalosaurus - se ne se hlalositsoe ka saense. Bo-ralitaba ba ile ba tsebahala ka ho fetisetsoa ke sechaba ka kakaretso ka lingoliloeng tse bonts'itsoeng tsa Thomas Hawkins: Hawkins o ile a hlahisa pono e makatsang ea liphoofolo, a li nka e le pōpo e kholo ea diabolosi, matsatsing a pele nalane ea Adama ea lefats'e (pele ho hlaha hoa batho). Litšoantšo tsena tse betliloeng li ka bonoa Setsing sa Pokello ea Lintho tsa Tlhaho ea Brithani.
Plesiosaurus macrocephalus (1894)
Fossil, e ileng ea fetoha setšoantšo sa bobeli se fumanoeng ke Mary Anning ho Lyme Regis, ka December 1830, e ile ea reoa lebitso la William Buckland ka 1836 tlasa tataiso ea Plesiosaurus macrocephalus. E na le lebitso la eona ka lebaka la hlooho ea eona e kholo haholo, ha e bapisoa le plesiosaurus e fetileng. William Willoughby, Lord Cole, hamorao Earl Enniskillen (le mofuputsi ho Geological Society) ba fumane fosse ka 1831 bakeng sa tjhelete e kholo ea li-guineas tse 200 - lichelete tsa khauta tsa Senyesemane. Ka la 4 Tšitoe 1838, Richard Owen, kopanong ea Geological Society ea London, o ile a hlahisa sengoloa sa hae sa Tlhaloso ea Viscount Cole Plesiosaurus macrocephalus". Mohlala oa BMNH R1336 o na le skeleton e bolokiloeng hantle ea motho e monyane, ea ka bang bolelele ba limithara tse tharo, e ntšoang ka lejoe le thata. Mohlala ona o se o bolokiloe Musiamong oa Tlaleho ea Tlhaho ea Great Britain.
Litšoantšo tsa bademona tsa Thomas Hawkins plesiosaurs.
Ka halofo ea pele ea lekholo la bo19 la lilemo, palo ea batho ba fumaneng boipelaetso e ile ea eketseha haholo, haholo-holo ka lebaka la tse sibolotsoeng mefuteng ea maqhubu a leoatle ea Lyme Regis. Ke Sir Richard Owen feela ea boletseng mefuta e mecha e ka bang lekholo, leha ho le joalo, litlhaloso tsa bona tse ngata li ne li thehiloe masapong a ikhethileng, ntle le lipatlisiso tse lekaneng ho khona ho li khetholla ho mefuta e meng e seng e hlalositsoe pele. Boholo ba "mefuta e mecha" e hlalositsoeng ka nako ena e phatlalalitsoe kamora nako e fosahetseng, ha e meng e ne e abetsoe ka botlalo genera kapa malapa a mang. Ka 1841, Owen o ile a reha mofuta o mocha oa Pliosaurus - Pliosaurus brachydeirus. Etymology ea eona e simolohile ho li-plesiosaurus tsa pejana mme e tsoa ho Greek. “Ho feta” ho ea ka Owen, o ne a le haufi haholo le mekholutsoane ho feta plesiosaurus. Lebitso la eona le ikhethang le bolela "ba melala e khuts'oane". Hamorao, li-pliosaurids li ile tsa lemohuoa e le tsa moroko ka ho fapana li fapana le li-plesiosaurids. Lelapa Plesiosauridae e ne e se e fanoe ke John Edward Gray ka 1825, 'me ka 1835, Henry Marie Ducrot de Blainville, o ile a abela mokhatlo o ikemetseng Plesiosauria.
Karolong ea bobeli ea lekholo la bo19 la lilemo, ho fumanoe lintho tsa bohlokoa kantle ho Engelane, haholo-holo masapo a li-plesiosaurs tse fumanoeng litšoantšong tsa Leoatle la Amerika la Cretaceous Western Inland, ho tloha Nyobrara. E 'ngoe ea mesaletsa ea lintho tsa khale-khale, e ne e tšoaea qaleho ea Lintoa tsa Bone lipakeng tsa bahanyetsi ba litsebi tsa marang-rang, Edward Drinker Cope le Otniel Charles Marsh. Ka 1867, Ngaka Theophilus Turner o ile a fumana lesapo la mokolokotoane haufi le Fort Wallace, Kansas, eo a e fileng Cope. Cope o lekile ho khutlisetsa phoofolo ho latela monahano oa hore karolo e telele ea lesapo ke mohatla mme karolo e khuts'oane ke molala. Hang-hang o ile a hlokomela hore masapo a neng a le ka tlasa matsoho a hae a ne a e-na le litšobotsi tse ikhethileng: vertebrae ea popelo e ne e e-na le li-chevrons, 'me lesela la methapo ea methapo le ne le shebile morao. A nyahame, Cope o ile a etsa qeto ea hore o fumane sehlopha se secha sa lihahabi: Streptosauria (streptosaurus) kapa "mekholutsoane e potolohileng", e neng e khetholloa ke li-vertebrae tse sa fetoheng, ho ba sieo ha matsoho le mohatla, ho fana ka motsamao o ka sehloohong. Kamora ho hatisa tlhaloso ea phoofolo ena ka 1868, e lateloang ke papiso mosebetsing oa hae ho lihahabi le li-amphibians, Cope o ile a mema Marsh le Joseph Lady ho khahloa ke phoofolo ea hae e ncha eo a e reileng lebitso. Elasmosaurus platyurus - elasmosaurus.
Ho hahoa bocha ha Elasmosaurus (Cope, 1868)
Elasmosaurus e hlophisitsoeng bocha (Cope, 1869)
Kamora ho mamela tlhaloso ea Cope, Marsh o ile a fana ka maikutlo a hore tlhaloso e bonolo ea sebopeho se makatsang ke hore Cope e ile ea hlalosa hampe sebopeho sa lesapo la mokokotlo. Ha Cope a arabela ka mokhoa o khopisang tlhahiso ena, Mofumahali o ile a nka lehata 'me a le beha holim' a polelo ea ho qetela ea caudal, eo a ileng a bua le eena ka mokhoa o hlakileng: ha e le hantle e ne e le "vertebra" ea pele ea letsoele. Cope ea leka-lekaneng o ile a leka ho tlosa sengoloa sa libuka tsa hae, empa ha sena se sa atleha, o ile a hatisa khatiso e ntlafalitsoeng ka papiso e fetotsoeng, empa ka letsatsi le tšoanang la phatlalatso. Ha a ka a lumela phoso ea hae, a re o thetsitsoe ke Lady ka boeena, ea hlalosang mohlala Cimoliasaurushape e kentse mokokotlo oa mokokotlo. Hamorao Marsh o ile a re nyeoe ena ke eona lebaka la ho ngangisana ha hae le Cope: "Ho tloha ka nako eo, e fetohile sera sa ka se bohloko." Hamorao, Cope le Marsh, tlholisanong ea bona, ba bitsitse mefuta e mecha le mefuta ea li-plesiosaurs, tseo boholo ba tsona bo nkoang li sa sebetse.
Bo-ralitaba ba tsoang liphoofolong tsa metsi tsa nakong e fetileng le tsa hona joale, papiso ea Albert Kull, 1914.
Mathoasong a lekholo la bo20 la lilemo, lithuto tse ngata tsa li-plesiosaurs li ile tsa etsoa ke moithuti oa mehleng oa Marsh, Moprofesa Samuel Wendell Williston. Ka 1914, Williston o ile a hatisa buka ea hae, Water Reptiles of the Past and Present, eo ka lilemo tse ngata e ileng ea lula e le mongolo o akaretsang haholo ho li-plesiosaurs. Ke ka 2013 feela moo sengoloa sa pele sa sengoloa se hatisitsoeng ke Olivier Rippel. Bohareng ba mashome a mabeli a lilemo, United States e ile ea lula e le setsi sa bohlokoa sa lipatlisiso, haholo-holo ka lebaka la se sibolotsoeng ke Samuel Paul Wells. Lekholong la bo19 le boholo ba lekholo la bo mashome a mabeli la lilemo, ho ile ha hlalosoa mefuta e meraro kapa e mene ea lilemo tse leshome le metso e mene, empa lebelo leo le ile la eketseha ka tšohanyetso lilemong tsa bo-1990: mabitso a macha a leshome le metso e supileng a hlalosoang nakong ena. Lebelo la ho sibolloa le ile la eketseha 'me qalong ea lekholo la bo21 la lilemo, selemo se seng le se seng ho hlalositsoe li-plesiosaurs tse ncha tse tharo kapa tse' ne. Sena se bolela hore sephetho sena se entsoe ka lebaka la lipatlisiso tse matla tsa tšimong.
Ka nako e telele, masala a marang-rang a mangata a marang-rang a ne a hlahisitsoe ke mofuta ona. Mefuta e mengata ea pele e kenyellelitsoeng ho li-plesiosaurus e se e entsoe lebitso 'me bongata ba eona ha e sa le karolo ea lelapa la Plesiosauridae. Ka mohlala, Plesiosaurus rostratus le Plesiosaurus conybeari ba ile ba rehoa lebitso Archaeonectrus (archeonectrus) le Attenborosaurus (attenborosaurus), ka ho latellana, ka bobeli li haufi le pliosaurids.
Storrs ka 1997 ba fokolitse palo ea mefuta e nepahetseng ea "plesiosaurus" ho isa ho tse tharo. Leha ho le joalo, ba babeli ba bona ba bonts'itse likarolo tse ikhethang tse hlokang karohano ea mehato: "Plesiosaurus" guilielmiiperatoris kajeno e nkuoa e le Seeleyosaurus, lebitso le hlahisitse lilemo tse 'maloa tse fetileng le ho busetsoa ke Grossman (2007), le "Plesiosaurus" brachypterygius e se e tsejoa ka lebitso la gidrion - Hydosa. Hajoale, mofuta oa Plesiosaurus o na le mofuta o le mong feela o loketseng - P. dolichodeirusempa mefuta e meng e amanang le plesiosaurus e ntse e le likhang. Mohlala, "Plesiosaurus" macrocephalus e kanna eaba ke Romaleosaurid e monyane. Rhomaleosauridae - ena ke lelapa la Jurassic plesiosaurs, le lulang maemong a mahareng lipakeng tsa li-plesiosaurs le li-pliosaurs, haholo-holo ho ba le molala o mokgutshwane le hlooho e harelaneng.