Pararcus

Il num vul dir: “pair arch”1

Mangiava: PeschReptils da marTriassic mesaunTecnicamain betg in dinosaur

Pararcus was a marine reptile that lived in the shallow seas of the Netherlands about 245 million years ago. It had a flat body and strong, paddle-like limbs for swimming. Unlike many other placodonts, it did not have a heavy shell on its back.1 2

Fatg divertent: quest reptil da mar nudava, entant ch'ils dinosaurs chaminavan sin terra. Tuts als numnan dinos, ma els eran in'autra rama dals reptils.

Viveva

avant 247 fin 241 milliuns onns2

Triassic mesaun

Fossils chattads en

Winterswijk quarry, the Netherlands2 1

Lunghezza

1,35 m (4,4 ft)1

Spertadad maximala

var 11 km/h (7 mph)

Nudar, stima

Cura viveva el?

Triassic

Giurassic

Cretacic

avant 252 milliuns onns20114566, l'asteroid

Quant grond era el?

Quant lung era el?

uschè lung sco 2,5 giats da chasa dal nas a la cuauschè lung sco 8 bananas ina suenter l'autrapudess nudar la lunghezza d'ina gronda piscina (50 m) en 16 secundas

Quant grond era Pararcus cumpareglià cun TAI?

Mo matematica en tes navigatur. Nagut na vegn arcunà u tramess.

Quant spert era el?

Ina persuna che va a pe var 5 km/h (3 mph)

Pararcus var 11 km/h (7 mph)

In uffant sin il velo var 12 km/h (7 mph)

In chaval che galoppescha var 65 km/h (40 mph)

In gepard var 100 km/h (62 mph)

chaussas cool

Fatgs divertents

Pararcus had a special backbone where the neural arches (the parts that protect the spinal cord) were not fused together, even in adults. This is called paedomorphosis and is common in animals that live in the sea.1

Its hip bones (pubis and ischium) were flat and plate-like, which helped it swim efficiently.1

The only known fossil of Pararcus was found by a fossil collector named Gerben Diepenbroek, and the species is named after him.1

Pararcus lived during the Middle Triassic period, about 247 to 241 million years ago, when the Netherlands was covered by a shallow sea.2

Unlike some other placodonts that had heavy armour plates, Pararcus only had a few small, unfused armour plates scattered in its skin.1

The vertebrae of Pararcus were deeply hollowed out on both ends (amphicoelous) and still had a notochord, a flexible rod that runs through the spine.1

Maletg da Pararcus fatg cun IA — In maletg fatg cun IA che mussa co Pararcus pudess avair guardà ora, fatg d'in computer tenor quai che la scienza sa. I sa tracta d'ina supposiziun: l'animal vair ha forsa guardà ora auter, e sias colurs vairas èn nunenconuschentas.

Per experts da dinos

Num scientific: Pararcus
Numnà da: Klein and Scheyer 20142
Gruppa: Reptils da mar
Famiglia / clada: Placodontia2
Classificaziun: Placodontia > Sauropterygia2
Vegliadetgna da la crappa: 247 fin 241 milliuns onns ()2
Formaziuns da crap: Vossenveld2
Pajais: Pajais Bass2
Chats da fossils: 1 en The Paleobiology Database2
Scuverta: Pararcus was named in 2014 by Nicole Klein and Torsten Scheyer. The only fossil was found by Gerben Diepenbroek in a quarry near Winterswijk, the Netherlands.2 1
Anc discutà: Scientists are not sure exactly how Pararcus swam. Its flexible backbone and flat hip bones suggest it might have moved differently from other placodonts.1

Danunder che vegnan ils fatgs

Klein_20120147.indd (zora.uzh.ch)
Pararcus in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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