Katin Dino No. 1460 na 2 027

Polycotylus

Sunan yana nufin: “ƙashin baya mai kofuna da yawa”1

Ya ci: NamaPlesiosaursƘarshen Jurassic zuwa Ƙarshen CretaceousBa dinosaur ba ne a zahiri

Polycotylus wani plesiosaur ne mai gajeren wuya wanda ya yi iyo a cikin ɗumantattun tekunan Arewacin Amurka da Turai a zamanin Cretaceous. Yana da babban kai, ƙaƙƙarfan fikafikai, kuma yana haihuwar ɗansa a cikin ruwa, kamar yadda kifin whale yake yi a yau.1

Gaskiya mai ban sha'awa: wannan dabbar ruwa mai rarrafe tana iyo yayin da dinosaur suke tafiya a ƙasa. Kowa yana kiran su dino, amma reshe ne daban na dabbobi masu rarrafe.

Ya rayu

shekaru miliyan 152 zuwa 72 da suka wuce3

Ƙarshen Jurassic zuwa Ƙarshen Cretaceous

Burbushin halittu da aka samo a

Kansas, South Dakota, Alabama, da Wyoming a ƙasar Amurka; har ila yau Faransa da Rasha1 2

Tsawo

4.7 zuwa 5.4 m (15 zuwa 18 ft)1

Nauyi

ton 1 (2,200 lb)1

sama da tan 1

Mafi girman gudu

kusan 27 km/h (17 mph)

Iyo, ƙiyasi

Me Polycotylus yake ci?

Polycotylus yana da ƙaƙƙarfan haƙora masu layi a samansu, wanda ke nuna cewa yana cin kifi da sauran dabbobin ruwa, amma bayanan ba su faɗi takamaiman abincinsa ba.

Yaushe ya rayu?

Triassic

Jurassic

Cretaceous

Shekaru miliyan 252 da suka wuce20114566, dutsen sararin samaniya (asteroid)

Yaya girman sa yake?

Yaya tsawon sa yake?

Yaya nauyin sa yake?

nauyin karnuka 50

tsawon karnuka 5 daga hanci zuwa wutsiyatsawon ayaba 30 a jerenauyin kankana 200nauyin yaran makarantar reno 53nauyin yaran makaranta 31nauyin beyar kankara 2zai iya yin iyo tsawon babban wurin wanka (50 m) cikin daƙiƙa 6.7

Yaya girman Polycotylus idan aka kwatanta da KAI?

Lissafi kawai a cikin burauzarka. Babu abin da ake adanawa ko aikawa ko'ina.

Yaya saurin sa yake?

Mutum yana tafiya kusan 5 km/h (3 mph)

Yaro a kan keke kusan 12 km/h (7 mph)

Polycotylus kusan 27 km/h (17 mph)

Doki mai gudu kusan 65 km/h (40 mph)

Damisa kusan 100 km/h (62 mph)

abubuwa masu ban sha'awa

Gaskiya mai ban sha'awa

Shahararren masanin burbushin halittu Edward Drinker Cope ne ya ba Polycotylus suna a shekarar 1869 daga burbushin da aka samo a Kansas.1

Wani burbushin Polycotylus da aka samo a Kansas yana ɗauke da ɗan tayi guda ɗaya a cikin mahaifiyarsa, wanda ke tabbatar da cewa waɗannan plesiosaurs suna haihuwar ɗa kai tsaye.1

Jaririn Polycotylus yana da tsawon kusan mita 1.5 (ƙafa 4.9), wanda yake kusan kashi 32 na tsawon mahaifiyarsa.1

Polycotylus yana da gajeren wuya da dogon kai, wanda hakan ya sa ya yi kama da pliosaur, amma a zahiri nau'in plesiosaur ne da ake kira polycotylid.1

Sunansa yana nufin 'ƙashin baya mai kofuna da yawa' saboda ƙasusuwan da ke cikin kashin bayansa suna da zurfin rami mai kama da kofi.1

Polycotylus ya rayu ne a Western Interior Seaway, wani teku mai zurfin gaske da ya raba Arewacin Amurka gida biyu a zamanin Cretaceous.1

Masana kimiyya suna tunanin Polycotylus yana haihuwar jariri ɗaya babba a kowane lokaci, dabarar da ake kira K-selection.1

Hoton Polycotylus da aka yi da AI — Hoton yadda Polycotylus zai iya kasancewa wanda aka yi da AI, kwamfuta ce ta yi shi daga abin da masana kimiyya suka sani. Hasashe ne: ainihin dabbar za ta iya zama daban, kuma babu wanda ya san ainihin launukanta.

ka tambaya

Tambayoyin da aka fi yi game da Polycotylus

?Yaya girman Polycotylus yake?

Polycotylus plesiosaur ne mai matsakaicin girma, yana da tsawon kusan mita 4.7 zuwa 5.4 (ƙafa 15 zuwa 18) kuma yana da nauyin sama da tan 1 (tan 1.1 na Amurka).1

?Polycotylus yana da gajeren wuya?

Eh, Polycotylus yana da gajeren wuya da dogon kai, ba kamar plesiosaurs masu dogayen wuya kamar Elasmosaurus ba.1

?Me Polycotylus yake ci?

Polycotylus yana da ƙaƙƙarfan haƙora masu layi a samansu, wanda ke nuna cewa yana cin kifi da sauran dabbobin ruwa, amma bayanan ba su faɗi takamaiman abincinsa ba.1

?Yaushe Polycotylus ya rayu?

Polycotylus ya rayu ne kusa da ƙarshen zamanin Cretaceous, kimanin shekaru miliyan 84 zuwa 66 da suka wuce.1

Mai karyata tatsuniya

Tatsuniya: Mutane da yawa suna tunanin cewa duk plesiosaurs suna da dogayen wuya kamar dodo na Loch Ness.

Gaskiya: Polycotylus yana da gajeren wuya da babban kai, wanda ya sha bamban da plesiosaurs masu dogayen wuya kamar Elasmosaurus.1

Don ƙwararrun dino

Sunan kimiyya: Polycotylus
Wanda ya ba da suna: Cope 18693
Rukuni: Plesiosaurs
Iyali / rukuni: Polycotylidae3
Rarrabewa: Plesiosauria > Sauropterygia3
Zamanin duwatsu: shekaru miliyan 152 zuwa 72 (Kimmeridgian / Campanian)3
Tsarin duwatsu: Niobrara, Frontier, Mooreville Chalk3
Kasashe: Amurka, Faransa, Russia3
Rubutun burbushin halittu: 10 a cikin Bayanan Paleobiology3
Gano: Edward Drinker Cope ne ya ba Polycotylus suna a shekarar 1869 daga ƙasusuwan da aka samo a Niobrara Formation na Kansas. An sake samun kusan cikakken ƙashin jiki a Alabama a shekarar 1949 amma ba a bayyana shi ba sai a shekarar 2002.1
Har yanzu ana muhawara: Masana kimiyya ba su da tabbas kan yawan nau'ikan Polycotylus da suka wanzu, kuma wasu nau'ikan na iya zama iri ɗaya ne.1

Inda bayanan suka fito

Polycotylus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Polycotylus in The Paleobiology Database (CC BY 4.0): shekaru, wurare, nau'in duwatsu, rarrabawa.

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