Psephochelys

Leina le raya: “pebbly turtle”1

E jele: DitlhapiDigagabi tsa lewatleBofelo jwa TriassicKa saense, ga se dinosoro

Psephochelys was a turtle-like marine reptile that lived in the Late Triassic period, about 233 to 227 million years ago. It had a shell on its back made of many small bony plates, but no shell on its belly, just loose bones. It swam in warm seas where China is today.1 2

Ntlha e e monate: segagabi seno sa lewatle se ne se thuma fa dinosoro di ne di tsamaya mo lefatsheng. Mongwe le mongwe o di bitsa didino, mme e ne e le lekala le lengwe la digagabi.

E tshetse

dimilione tsa dingwaga di le 234 go ya go 227 tse di fetileng4

Bofelo jwa Triassic

Difosili di fitlhetswe kwa

Guizhou Province, China1 2

Bonako jo bogolo

e ka nna 11 km/h (7 mph)

Go thuma, kakanyo

E tshetse leng?

Triassic

Jurassic

Cretaceous

dimilione tsa dingwaga di le 252 tse di fetileng20114566, asteroiti

E ne e le bonako go le kae?

Motho yo o tsamayang e ka nna 5 km/h (3 mph)

Psephochelys e ka nna 11 km/h (7 mph)

Ngwana mo baesekeleng e ka nna 12 km/h (7 mph)

Pitse e e sianang ka bonako e ka nna 65 km/h (40 mph)

Lengau e ka nna 100 km/h (62 mph)

dilo tse di monate

Dintlha tse di monate

Psephochelys is known from only one species, Psephochelys polyosteoderma, and the first fossil was a partial skeleton found in the Falong Formation in China.1

Unlike turtles, Psephochelys had no hard shell on its belly. Instead, it had rib-like bones and small bony plates that were loosely connected.1

A subadult specimen shows that the shell of Psephochelys grew by fusing small plates together, starting from the middle and edges, similar to how a turtle's shell develops.3

Psephochelys belonged to a group called placodonts, which were marine reptiles that looked like turtles but are not closely related to them.1

The name Psephochelys means 'pebbly turtle' because its shell was made of many small, pebble-like bony plates.1

Psephochelys lived during the Carnian age of the Late Triassic, between about 233 and 227 million years ago.2

Setshwantsho sa Psephochelys se se dirilweng ke AI — Setshwantsho se se dirilweng ke AI sa kafa Psephochelys e ka tswang e ne e lebega ka gone, se dirilwe ke khomputara go ya ka se borasaense ba se itseng. Ke kakanyo fela: phologolo ya nnete e ka tswa e ne e lebega ka tsela e sele, mme ga go ope yo o itseng mebala ya yona ya nnete.

Ya baitseanape ba didino

Leina la saense: Psephochelys
Leina le neilwe ke: Li and Rieppel 20024
Setlhopha: Digagabi tsa lewatle
Lelapa / clade: Placochelyidae4
Thulaganyo: Placodontia > Sauropterygia4
Bogolo jwa matlapa: 234 go ya go 227 dimilione tsa dingwaga (Carnian)4
Dibopego tsa matlapa: Xiaowa4
Dinaga: Tšhaena4
Direkoto tsa difosili: 1 mo The Paleobiology Database4
Go fitlhelwa: Psephochelys was named by Chinese paleontologist Chun Li and Swiss paleontologist Olivier Rieppel in 2002, based on a single partial skeleton found in Guizhou, China.1 2
Go sa ntse go ganetsanwa: Scientists are still debating exactly how Psephochelys is related to other placodonts, and whether its shell grew in a way that hints at a common ancestor with turtles.3

Kwa dintlha di tswang teng

Psephochelys (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
First subadult specimen of Psephochelys polyosteoderma (Sauropterygia, Placodontia) implies turtle-like fusion pattern of the carapace (onlinelibrary.wiley.com)
Psephochelys in The Paleobiology Database (CC BY 4.0): dingwaga, mafelo, dibopego tsa matlapa, thulaganyo.

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