Scalamagnus

Igama lithetha: “large staircase, referring to the Grand Staircase-Escalante National Monument where it was found”1

Yayitya: InyamaIiplesiosauriiCretaceous yamvaNgokwenene ayisiyo dayinaso

Scalamagnus was a small, fast-swimming marine reptile that lived in the warm, shallow sea that once covered North America. It had a long snout full of sharp teeth and used its four flippers to zoom through the water after fish and squid.1 2

Inyani emnandi: esi sirhubuluzi saselwandle sasiqubha ngelixa iidayinaso zazihamba emhlabeni. Wonke umntu uzibiza ngokuba ziidayinaso, kodwa zazilisebe elahlukileyo lezirhubuluzi.

Yaphila

94 ukuya ku-90 izigidi zeminyaka eyadlulayo2

iCretaceous yamva

Iifosili zifunyenwe:

Utah, USA, in the Tropic Shale formation1 2

Ubude

3.2 m (10 ft)1

Esona santya siphezulu

malunga ne-28 km/h (17 mph)

Ukuqubha, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

inde njengezinja ezingama-3, impumlo ukuya emsileniinde njengeebhanana ezingama-18 zilandelelanaibinokuqubha ubude bechibi elikhulu lokuqubha (50 m) ngemizuzwana engama-6.4

Scalamagnus wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

Umntu ohambayo malunga ne-5 km/h (3 mph)

Umntwana ekhwele ibhayisikile malunga ne-12 km/h (7 mph)

Scalamagnus malunga ne-28 km/h (17 mph)

Ihashe elibaleka ngamandla malunga ne-65 km/h (40 mph)

Ingwenkala malunga ne-100 km/h (62 mph)

izinto ezimnandi

Iinyani ezimnandi

Scalamagnus was originally thought to be a species of Dolichorhynchops, but scientists later gave it its own name in 2023.1

One Scalamagnus skeleton was found with 289 stomach stones (gastroliths), which is very unusual for this group of plesiosaurs.1

The stomach stones weighed about 518 grams in total, and most were smaller than 2 grams.1

It lived about 93 to 91 million years ago, during the early Turonian stage of the Late Cretaceous.1

Scalamagnus was a polycotylid plesiosaur, a group known for having short necks and large heads, unlike the long-necked plesiosaurs.1

The name Scalamagnus honors the Grand Staircase-Escalante National Monument in Utah, where its fossils were dug up.1

Umfanekiso owenziwe yi-AI: Scalamagnus — Umfanekiso owenziwe yi-AI obonisa indlela Scalamagnus esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.

Kwiingcali zeedayinaso

Igama lenzululwazi: Scalamagnus
Inikwe igama ngu:: Clark et al. 20242
Iqela: Iiplesiosauri
Usapho / iclade: Polycotylidae2
Ukuhlelwa: Plesiosauria > Sauropterygia2
Ubudala bamatye: 94 ukuya ku-90 izigidi zeminyaka (Turonian)2
Izakhiwo zamatye: Tropic Shale2
Amazwe: iUSA2
Iirekhodi zeefosili: 2 kwi-Paleobiology Database2
Ukufunyanwa: The first fossils were found between 2003 and 2005 by the Museum of Northern Arizona in the Tropic Shale of Utah. It was named Scalamagnus tropicensis in 2023 by Robert Clark, Robin O'Keefe, and Sara Slack.1 2
Kusaxoxwa ngayo: Scientists are not sure why Scalamagnus had so many stomach stones, since most other polycotylids did not have them.1

Apho iinyani zivela khona

Scalamagnus (en.wikipedia.org)
Scalamagnus in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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