sauropodomorpha

Agnosphitys cromhallensis

Source: thewoodparable

Name: Agnosphitys cromhallensis

Name Meaning: Unknown begetter 

First Described: 2002

Described By: Fraser et al

Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha, Guaibasauridae 

Agnosphitys was another sauropodomorph - or, at least, that’s one consensus at this time. It is only known from scattered remains and may be a chimera. It was close to the ancestry of dinosaurs, though whether it actually is a dinosaur is under debate - it may be a dinosauromorph, or it could be a basal saurischian before the theropod - sauropodomorph split. It was found in Avon, England, and lived from the Norian to Rhaetian ages of the Late Triassic, about 208 million years ago. Whether or not this was a real animal, and not just the jumbled remains of many - and then, if it was real, what it should be classified as - clearly requires more material. 

Sources: 

http://www.prehistoric-wildlife.com/species/a/agnosphitys.html

https://en.wikipedia.org/wiki/Agnosphitys

Shout out goes to mooshadventuring!

BRACHYTRACHELOPAN
“Short-necked Pan”
Late Jurassic, 150 million years ago (uncertain)

This unique sauropod measured only 30 feet in length. It set itself apart from its relatives with its unusually short neck – less than a quarter of its body length. While species like Diplodocus evolved longer and longer necks along the course of the evolutionary arms race, Brachytrachelopan practiced an adaptation strategy commonly known as “giving up.”

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Ornithopods at the AMNH
Other herbivore dinosaurs at the AMNH
Armored Herbivores - Ceratopsians - Some Sauropods - Psittacosaurus
Photos by me

Ornitópodos en el AMNH
Otros dinosaurios herbívoros en el AMNH
Acorazados - Ceratópsidos - Algunos Saurópodos - Psittacosaurus
Fotos mías

AMARGASAURUS
“La Amarga lizard”
Early Cretacous, 129.4-122.46 million years ago

Amargasaurus was not large compared to its sauropod relatives; it grew to only about 33 feet in length. It stood out, however, because of its double row of long vertebral spines. Some experts have interpreted these spines as supporting sails, much like Spinosaurus, and others have suggested they were for thermoregulation. The current consensus is that Amargasaurus clattered the spines together as a sound display, making it the annoying toddler of the sauropod world.

GIRAFFATITAN
“Giant giraffe”
Late Jurassic, 150-145 million years ago

Originally classified as a species of Brachiosaurus, this massive sauropod (of the titanosaur family) grew up to 74 feet long! For several decades it was the largest dinosaur known. Although it may have since been eclipsed in size, this majestic creature retains the dignity of dying before hearing itself called “Giraffatitan.”

Pantydraco caducus

Source: thewoodparable

Name: Pantydraco caducus

Name Meaning: Hollow of the Spring Dragon

First Described: 2007

Described By: Galton, Yates and Kermack

Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha

Pantydraco was another sauropomodomorph dinosaur from the Late Triassic, specifically the Rhaetian age, and potentially into the early Jurassic, around 208 to 200 million years ago. It was originally described as a species of Thecodontosaurus and was only known from a skull and partial skeleton of a juvenile individual. However, understanding basal sauropodomorphs more lead to its reclassification and its own genus. It was probably an omnivore, and mostly bipedal. It was found in the Pantyffynnon quarry of Wales in the United Kingdom.

Sources:

http://www.prehistoric-wildlife.com/species/p/pantydraco.html

https://en.wikipedia.org/wiki/Pantydraco

Shout out goes to suitupplease!

The Winton titan, Wintonotitan (2009)

Phylum : Chordata
Class : Reptilia
Order : Saurischia
Suborder : Sauropodomorpha
Infraorder : Sauropoda
Genus : Wintonotitan
Species : W. wattsi

  • Early Cretaceous (100 Ma)
  • 18 m long and 8 500 kg (size)
  • Australia, Winton formation (map)

For the last 75 years or so, Australia has been a relative wasteland when it comes to sauropod discoveries.

That all changed in 2009, with the announcement of not one, but two new sauropod genera: Diamantinasaurus and Wintonititan, comparably sized titanosaurs represented by sparse fossil remains. Like most titanosaurs, Wintonititan probably had a rudimentary layer of armored skin along its back, the better to deter the large, hungry theropods of its Australian ecosystem. (As to how titanosaurs wound up in Australia in the first place, tens of millions of years ago, this continent was part of the giant landmass Pangaea.)

CAMARASAURUS
“Chambered lizard”
Late Jurassic, 155-145 million years ago

Camarasaurus had a domed skull like Brachiosaurus, but the “chambers” referred to in its name are actually in its backbone – hollow vertebrae housed air sacs that reduced weight and helped such a large animal move. Its strong teeth would have been excellent for grinding tough vegetation, allowing it to occupy an ecological niche separate from its slender-toothed contemporary, Diplodocus. In fact, Camarasaurus was the most common sauropod of the Jurassic, and familiarity breeds contempt.

BAROSAURUS
“Heavy lizard”
Late Jurassic, 152-150 million years ago

Although its neck was longer and its tail was shorter, Barosaurus was roughly the same size as its close relative Diplodocus. It was dubbed “Heavy lizard” because at 85 feet long and 20 tons, this powerful plant-eater still couldn’t escape reductive ideals of beauty.

…Apatosaurus was heavier.

PLATEOSAURUS
“Broad lizard”
Triassic, 214-204 million years ago

Plateosaurus is considered a basal (basic/early) sauropodomorph (long-necked, quadrupedal herbivore like Diplodocus or Brachiosaurus). As such, many of its features make for an interesting crossroads in dinosaur evolution. One, it was still bipedal, probably only resting on its forelimbs while grazing. Two, it was almost certainly an herbivore (or omnivore), whereas its immediate ancestors were carnivorous. Three, it had bird-like air sacs in its bones, making it lighter and (at least partially) warm-blooded – traits otherwise recognized mostly in therapod dinosaurs. And four, it ranged in size widely – anywhere from 16 to 33 feet long for adults within the same species. While calling it a “missing link” between therapods and sauropods might be an exaggeration, it is safe to say that Plateosaurus couldn’t make up its damn mind.

Ruehleia bedheimensis

Source: thewoodparable

Name: Ruehleia bedheimensis

Name Meaning: Ruehle lizard

First Described: 2001

Described By: Galton

Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha 

Ruehleia was a basal sauropodomorph from the Norian age of the Late Triassic, somewhere between 216 and 203 million years ago. It is known from scattered remains including the neck, back and tail, and partially complete hands. It was found in the Trossingen Formation in Germany. It would have been about 8 meters long and still would have walked around bipedally, though it may have gone on all fours for feeding and drinking. Its diet, like that of all early sauropodomorphs, is under some debate - while it could have been herbivorous like its descendants, some early members of the group may have been omnivorous while transitioning to a primarily herbivorous lifestyle. 

Sources: 

http://www.prehistoric-wildlife.com/species/r/ruehleia.html

https://en.wikipedia.org/wiki/Ruehleia

Shout out goes to cheetah-nicki!

Plateosauravus cullingworthi

Source: thewoodparable

Name: Plateosauravus cullingworthi

Name Meaning: Grandfather of Plateosaurus

First Described: 1932

Described By: von Huene

Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha 

Plateosauravus was originally thought to be a species of Plateosaurus, however it was reassessed soon afterwards as a separate genus. As such, it was named in honor of the original genus; though it is unknown what its classification really is. It is known from more than a dozen partial skeletons, including juveniles. The exact age of the animal is unknown, however it did come from the Late Triassic. Furthermore, it was discovered in South Africa, including Kruger National Park. 

Source: 

https://en.wikipedia.org/wiki/Plateosauravus

Shout out goes to supasheep!

Nambalia roychowdhurii

Source: My friend, thewoodparable, again! Seriously check him out! He has been instrumental in the 2015 Campaign for fluffy “prosauropods.” 

Name: Nambalia roychowdhurii 

Name Meaning: Named for the Indian village of Nambal 

First Described: 2011

Described By: Novas et al. 

Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha 

Nambalia was a sauropodomorph discovered in Andhra Pradesh in central India. It lived between the late Norian and earliest Rhaetian ages of the Late Triassic, around 208 million years ago. It is known from scattered skeletal remains and no heads, though there is material from multiple individuals. It was more primitive than Efraasia, Plateosauravus and Ruehleia, but more derived than Thecodontosaurus and Pantydraco. It was found with the plateosaurid Jaklapallisaurus, a guaibasaurid, and two dinosauriforms. 

Source: 

https://en.wikipedia.org/wiki/Nambalia

Shout out goes to mrzmaniac!

Pampadromaeus barberenai

Source: thewoodparable

Name: Pampadromaeus barberenai

Name Meaning: Plain Runner 

First Described: 2011

Described By: Cabreira et al. 

Classification: Dinosauria, Saurischia, Eusaurischia, Sauropodomorpha 

Pampadromaeus was a basal sauropodomorph from about 225 million years ago, in the Carnian age of the Late Triassic. It was found in the Alemoa Member of the Santa Maria Formation in Brazil. It is known from a partial, well preserved skeleton, including most of the skull. It was a small, bipedal animal, with a mixture of basal and more advanced traits. It even had some characters of theropods. It had large, elongated, slightly recurved teeth that were coarsely serrated. The lower leg was much longer than the thighbone, implying it was a good runner. 

Source: 

https://en.wikipedia.org/wiki/Pampadromaeus

Shout out goes to archaeologystuck!