This would be a decent Late Jurassic pack... still don't like the idea of one Jurassic pack when the Cretaceous got two.
Given we just got another species pack that deals with carnivorous dinosaurs from the Cretaceous period, I definitely think we could use a species pack that deals with another period, regardless of whether it deals with the Jurassic, Triassic, or Permian periods. Of the species mentioned so far, the ones I think could work well for a Jurassic Species Pack are Scelidosaurus, Massospondylus, Lesothosaurus, Rhomaleosaurus, Temnodontosaurus, Torvosaurus, Dearc, Archaeopteryx, Heterodontosaurus, Sinosaurus, Rhamphorhynchus, Pterodactylus, Yangchuanosaurus, Camptosaurus, Ornitholestes, and Pliosaurus funkei (Predator X). Some other species that could work include:
Kulindadromeus, A herbivorous dinosaur, a basal neornithischian from the Middle Jurassic. The first Kulindadromeus fossil was found in Russia. Its feather-like integument is evidence for protofeathers being basal to Ornithischia and possibly Dinosauria as a whole, rather than just to Coelurosauria, as previously suspected. Kulindadromeus is featured on the flag and coat of arms of Russia's Chernyshevsky District, where it was discovered.
Scutellosaurus, A species of thyreophoran ornithischian dinosaur that lived approximately 196 million years ago during the early part of the Jurassic Period in what is now Arizona, USA. It is one of the earliest representatives of the armored dinosaurs
Megapnosaurus, An extinct genus of coelophysid theropod dinosaur that lived approximately 188 million years ago during the early part of the Jurassic Period in what is now Zimbabwe. It is estimated to have been 2.2 m (7.2 ft) long from nose to tail and weighed up to 13 kg (29 lb). If it gets added to the game, the developers should make sure it is smaller than Coelophysis. M. rhodesiensis was one of the first dinosaurs to be portrayed with feathers, though there is no direct evidence that it actually had feathers. Researchers suggested that members of the species may have hunted in packs, preying upon "prosauropods" (basal sauropodomorphs) and early lizards. Its name means big dead lizard, which is derived from the Greek words μεγα = "big", 'απνοος = "not breathing", "dead", and σαυρος = "lizard".
Elaphrosaurus, A genus of ceratosaurian theropod dinosaur that lived approximately 154 to 150 million years ago during the Late Jurassic Period in what is now Tanzania in Africa. Elaphrosaurus was a medium-sized but lightly built member of the group that could grow up to 6.2 m (20 ft) long. Morphologically, this dinosaur is significant in two ways. Firstly, it has a relatively long body but is very shallow-chested for a theropod of its size. Secondly, it has very short hindlimbs in comparison with its body. It is thought that it likely hunted the small and swift ornithopod herbivores. However, newer research support the idea that Elaphrosaurus was either a herbivore or omnivore.
Gargoyleosaurus, It is one of the earliest ankylosaurs known from relatively complete fossil remains. The holotype was discovered in 1995 at the Bone Cabin Quarry West locality, in Albany County, Wyoming in exposures of the late Jurassic section of the Morrison Formation. Its name means gargoyle lizard.
Eustreptospondylus, a genus of megalosaurid theropod dinosaur, from the Oxfordian stage of the Late Jurassic period (some time between 163 and 154 million years ago) in southern England, at a time when Europe was a series of scattered islands. It is believed to have fed on smaller dinosaurs and pterosaurs, or scavenged the carcasses of fishes, marine reptiles, and other dinosaurs. It is believed to have been capable of swimming from island to island similar to what Komodo Dragons today.
Laquintasaura, A genus of Venezuelan ornithischian dinosaur containing only the type species Laquintasaura venezuelae. The species was the first dinosaur to have been identified from Venezuela. It is known from extensive remains, all from a singular bonebed locality, La Quinta Formation, which has been sampled for specimen blocks over the course of several expeditions. It is estimated that it grew to be around 1 meters (3.3 ft.) in length.
Excalibosaurus, a monotypic genus of marine ichthyosaurs that lived during the Early Jurassic period in what is now England. It is characterized by the extreme elongation of the rostrum, with the lower jaw about three-fourths of the length of the upper jaw, giving the animal a swordfish-like look. Its name means Excalibur's lizard.
Dubreuillosaurus, a genus of carnivorous dinosaur from present day France that lived in the middle Jurassic period. The type specimen of Dubreuillosaurus is in the number of preserved elements only rivalled in this group by that of Eustreptospondylus. Despite its remains being found on an island, it didn't show any signs of insular dwarfism.
Haplocheirus, A genus of theropod dinosaur found in the Shishugou Formation in the Junggar Basin of northwestern China that lived during the late Jurassic period. Upon its description, it was considered the oldest alvarezsauroid, predating all other members by about 63 million years. Its name means simple-handed skillful one", referencing its hypothesized behavior of using its three-fingered hands for activities that other alvarezsauroids could not perform, such as catching prey.
Eoabelisaurus, A genus of abelisaurid theropod dinosaur from the Lower Jurassic Cañadón Asfalto Formation of the Cañadón Asfalto Basin in Argentina, South America. The generic name combines a Greek ἠώς, (eos), "dawn", with the name Abelisaurus, in reference to the fact it represents an early relative of the latter. This abelisaurid species lived more than 40 million years prior to any of its other relatives in the early Jurassic period.
Dracopelta, A monospecific genus of ankylosaur dinosaur from Portugal that lived during the late Jurassic period in what is now the Lourinhã Formation. It is estimated to have had a body length of 3 meters (9.9 feet) and a weight of 300 kilograms (600 lb.).Its name means dragon shield which derived from the Latin word draco (dragon) and the Greek word πέλτη, pelte, (Latinized to pelta), "small shield". The specific name, zbyszewskii, honors Georges Zbyszewski, after his research on fossil vertebrates from Portugal.
Sordes, A small pterosaur from the late Jurassic period Karabastau Svita of Kazakhstan. Fossil evidence has been found to show that they had hair-like feathers. The genus name is Latin for "filth" or "scum"; but Sharov translates it as "nechist", which means "devil" or "evil spirit", so the intended translation is "hairy devil." It is estimated to have had a 0.63 m (2 ft.) wingspan.
Mymoorapelta, A species of nodosaurid ankylosaur from the late Jurassic period found in Morrison Formation of western Colorado and central Utah, USA. It is one of the earliest known nodosaurids; and is also one of the smallest ankylosaurs currently known and the smallest known quadrupedal dinosaur from the Morrison Formation. It is estimated that the length of the largest specimen is around 3 meters (9.8 ft.). Mymoorapelta was the first Jurassic ankylosaur named from North America.
Lusovenator, A genus of carcharodontosaurian theropod dinosaur, from the Late Jurassic Praia de Amoreira Porto-Novo Member and the Late Jurassic-Early Cretaceous Assenta Member of the Lourinhã Formation in present-day Portugal. The generic name Lusovenator is derived from Lusitania, the province of the Roman Empire that roughly matches present-day Portugal, affixed with the Latin venator, meaning "hunter".
Lufengosaurus, A genus of massospondylid dinosaur which lived during the Early Jurassic period in what is now southwestern China. It grew to be between 6 and 9 meters (20 and 30 ft.) long and weighed between 1.7 and 2.3 metric tones (1.9 and 2.5 short tons). Embryos of this genus also represent the earliest evidence of vertebrate soft tissue preservation.
Xingxiulong, A bipedal sauropodiform from the Early Jurassic of China. It grew to be 4–5 meters (13–16 ft.) in length. The generic name (literally meaning "constellation") refers to the Xingxiu Bridge (星宿), which was constructed during the Ming Dynasty of China.
Gyposaurus, A genus of basal sauropodomorph dinosaur from the early Jurassic of South Africa. Its name means vulture lizard, which is referring to the outdated hypothesis that prosauropods were carnivores.
Jingshanosaurus, A genus of sauropodomorph dinosaurs from the early Jurassic period, that lived between 201.3 million years ago and 199.3 million years ago. It grew to be 5 meters (16.4 ft.) long and weighed around 4.3 tons. Its fossils, a nearly complete skeleton including the skull, were found near the town of Jingshan ("Golden Hill"), Lufeng County, Yunnan Province, China, from which the name derives. It is considered the last prosauropod species to live on earth.
Antetonitrus, a genus of sauropod dinosaur found in the Early Jurassic Elliot Formation of South Africa. The only species is Antetonitrus ingenipes. As one of the oldest known sauropods, it is crucial for the understanding of the origin and early evolution of this group. It was a quadrupedal herbivore, like all of its later relatives, but shows primitive adaptations to use the forelimbs for grasping, instead of purely for weight support. The holotype specimen may have measured 8–10 meters (26–33 ft.) in length and 5.6 metric tons (6.2 short tons) in body mass. The name is derived from the Latin ante- ("before") and tonitrus ("thunder"), which refers to its existence, before other known sauropods, specifically Brontosaurus ("thunder lizard"). The one known species of Antetonitrus is called A. ingenipes, from the Latin ingens ("massive") and pes ("foot"), because it shows the beginning of the development of feet designed solely to support weight.
Gongxianosaurus, A genus of basal sauropod dinosaur from the early Jurassic Period. Based on four fragmentary to complete specimens found in China (Sichuan Province), it is one of the most completely known early sauropods. It is thought to have grown to be around 14 meters (46 ft.) in length.
Chilesaurus, An extinct genus of herbivorous dinosaur that lived 145 million years ago (Mya) in the late Jurassic period of Chile. Showing a combination of traits from theropods, ornithischians, and sauropodomorphs, this genus has far-reaching implications for the evolution of dinosaurs. It measured roughly 3.2 m (10.5 ft) from nose to tail. he most unusual feature of Chilesaurus is its spatula-shaped, elongated teeth, obliquely pointing forwards. Such dentition would be unique in the Theropoda, where it has sometimes been recovered, and is typical for a herbivore, indicating Chilesaurus was a plant-eater.