Haestasaurus

Lebitso le bolela: “Haesta's lizard, named after a chieftain of the Hastings area”1

E jele: DimelaMelala e meleleleKretase ya Pele

Haestasaurus was a huge, long-necked dinosaur that munched plants in Early Cretaceous England. It is famous for its arm bones and a piece of fossilized skin, which was the first dinosaur skin ever found by scientists!4 2

E phetse

dilemo tse dimilione tse 139 ho isa ho 133 tse fetileng4

Kretase ya Pele

Difosili di fumanwe ho

Near Hastings, East Sussex, southeast England, United Kingdom4 1

Lebelo le phahameng ka ho fetisisa

e ka bang 15 km/h (9 mph)

Ho matha, kakanyo

E phetse neng?

Triasiki

Jurasiki

Kretase

Dilemo tse dimilione tse 252 tse fetileng20114566, asteroiti

E ne e le lebelo hakae?

Motho ya tsamayang ka maoto e ka bang 5 km/h (3 mph)

Ngwana a palame baesekele e ka bang 12 km/h (7 mph)

Haestasaurus e ka bang 15 km/h (9 mph)

Pere e mathang ka matla e ka bang 65 km/h (40 mph)

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

dintho tse monate

Dintlha tse monate

Haestasaurus is known from a left upper arm bone (humerus), a forearm bone (ulna), a radius, and a skin impression. The skin was the first dinosaur skin ever recognized by science.1 2

Scientists created the new name Haestasaurus in 2015 because the old name Pelorosaurus was used for different bones in earlier studies.1

The fossils come from the Hastings Beds Group, which are about 139 to 133 million years old (Early Cretaceous).4

Haestasaurus had a very thick and strong ulna (forearm bone) but a slim radius next to it. That unusual combination helps scientists tell it apart from other sauropods.1

The upper arm bone had a special hook-like bump on its lower inner corner. This bump is a unique feature not seen in any other sauropod.1

Haestasaurus is classified as a macronarian, a group of sauropods that includes the huge titanosaurs. But scientists are not sure if it was a very early titanosaur or a close cousin.1

The skin impression shows small, round scales. This was the first direct evidence that sauropods had scaly skin, not feathers.2

Setshwantsho sa Haestasaurus se entsweng ke AI — Setshwantsho se entsweng ke AI, se bontshang kamoo Haestasaurus e ka beng e ne e shebahala kateng, se entswe ke khomphutha ho ya ka seo bo-ramahlale ba se tsebang. Ke ho hakanya feela: phoofolo ya nnete e ka nna ya ba e ne e shebahala ka tsela e nngwe, mme ha ho motho ya tsebang mebala ya yona ya nnete.

o botsitse

Dipotso tse botswang haholo ka Haestasaurus

?How big was Haestasaurus?

Scientists are not sure of its total size because only a forelimb is known. The upper arm bone (humerus) is 599 millimetres (about 60 cm) long, the ulna 421 millimetres, and the radius 404 millimetres.3

?What did Haestasaurus eat?

Haestasaurus was a herbivore, meaning it ate plants. It was a long-necked sauropod that munched on vegetation in Early Cretaceous England.3

?Did Haestasaurus have feathers?

No, Haestasaurus had scaly skin, not feathers. Its fossilized skin shows small, round, hexagonal scales, and it was the first dinosaur skin ever found by scientists.3 1

Bakeng sa ditsebi tsa didinosaure

Lebitso la saense: Haestasaurus
E rehilwe ke: Upchurch et al. 20154
Sehlopha: Melala e melelele
Lelapa / leloko: Eusauropoda4
Tlhophiso: Sauropodomorpha > Sauropoda4
Dilemo tsa mafika: dilemo tse dimilione tse 139 ho isa ho 133 (Berriasian / Valanginian)4
Dibopeho tsa mafika: Hastings Beds4
Dinaha: United Kingdom4
Direkoto tsa difosili: 1 ho The Paleobiology Database4
Ho sibollwa: The fossils were discovered in 1852 near Hastings, England. The species was first named Pelorosaurus becklesii by Gideon Mantell in 1852, but later moved to a new genus, Haestasaurus, by Paul Upchurch and colleagues in 2015.1
E sa ntse e phehwa kgang: Scientists are not sure whether Haestasaurus was a very early member of the titanosaur group or a different type of macronarian sauropod.1

Moo dintlha di tswang teng

The Anatomy and Phylogenetic Relationships of “Pelorosaurus“ becklesii (Neosauropoda, Macronaria) from the Early Cretaceous of England | PLOS One (journals.plos.org)
Newly detected data from Haestasaurus and review of sauropod skin morphology suggests Early Jurassic origin of skin papillae | Communications Biology (nature.com)
Haestasaurus (en.wikipedia.org)
Haestasaurus in The Paleobiology Database (CC BY 4.0): dilemo, dibaka, dibopeho tsa mafika, tlhophiso.

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