Dinosauria Translation and Pronunciation Guide J

    Ben Creisler


    Web Page copyright © 1996-2002 by Jeff Poling. Text copyright © 1996-2002 by Ben Creisler. This material may not be reproduced except as provided for in the "fair-use doctrine" of title 17, U.S. Code.
    Last updated July 7, 2003. Updated every Monday and Thursday, as necessary.
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    Jainosaurus Hunt, Lockley, Lucas & Meyer 1996 "Jain's lizard"

    JIEN-o-SAWR-us ((S. L.) Jain + Gr. sauros) (m) named to honor the Indian paleontologist Sohan Lal Jain; proposed for "Antarctosaurus" septentrionalis Huene &Matley 1933. Sauropoda Titanosauridae L. Cret. India


    Janenschia Wild 1991 "for W. Janensch"

    yah-NEN-shee-a (f) named to honor Werner Janensch (1878-1969), German paleontologist who participated in the Tendaguru expeditions; for "Tornieria" robusta. Sauropoda Titanosauridae L. Jur. Afr.


    Jaxartosaurus Riabinin 1937 "Jaxartes River lizard"

    jak-SAHR-to-SAWR-us (Jaxartes (ancient name for the Syr Darya River in Central Asia) + Gr. sauros "lizard") (m) named for the Jaxartes River (= Syr Darya) near where the fossil was found in Kazakhstan. Ornithopoda Hadrosauridae Lambeosaurinae L. Cret. CAs.


    Jeholosaurus Xu, Wang & You 2000 "Jehol lizard"

    juh-HOH-lo-SAWR-us (Jehol + Gr. sauros "lizard") (m) referring to Jehol, an old geographic name for western Liaoning and northern Hebei in northeastern China. Jeholosaurus is a small primitive ornithopod known from a nearly complete skull and partial postcranial skeleton (Holotype: IVPP V 12529 (Institute of Vertebrate Paleontology and Paleoanthropology, Beijing)) as well as another nearly complete skull and some cervical vertebrae; from the Early Cretaceous (Barremian) Yixian Formation, at Lujiatun, Shangyuan, Beipiao City, Liaoning Province, China. The skull is about 6 cm (2.2 in)in length, suggesting a total body length of around 72-80 cm (29-32 in). Jeholosaurus shows some similarities to other primitive ornithischians from China such as Agilisaurus and Yandusaurus in features of the skull; it also has a long pedal phalanx III-4 as in Xiaosaurus.

    Type Species: Jeholosaurus shangyuanensis [SHAHNG-yoo-eh-NEN-sis] Xu, Wang & You 2000 : from Shangyuan, a name for the larger geographic area including the type locality in northern China. Ornithischia i.s. Early Cretaceous (Barremian) China [added 3-2001]


    Jenghizkhan Olshevsky in Olshevsky, Ford & Yamamoto 1995

    JEN-gis-kahn (m) named for Jenghis Khan, "supreme conqueror," title taken by Temujin (1162?-1227), famous Mongol leader; new generic name proposed for the Mongolian species Tyrannosaurus (or Tarbosaurus) bataar. Theropoda Tyrannosauridae (= ?Tyrannosaurus)


    Jingshanosaurus Zhang & Yang "Jingshan (China) lizard"

    JING-SHAHN-o-SAWR-us (Jingshan (Chin. jing "gold" + Chin. shan "mountain, hill") + Gr. sauros "lizard") (m) named for the town of Jingshan ["Golden Hill"], Lufeng County, Yunnan Province, China, the municipality with jurisdiction over the type locality, and the site of the Museum of Lufeng Dinosaurs; proposed for a giant (9.8 m. (32 ft.)) prosauropod, thought by some other researchers (Dong) to be only a giant specimen of Yunnanosaurus. Prosauropoda Plateosauridae (?L. Trias.) E. Jur. China [= ?Yunnanosaurus]


    Jinzhousaurus Wang & Xu 2001 "Jinzhou lizard"

    jeen-joh-SAWR-us (Jinzhou + Gr. sauros "lizard") (m) named for Jinzhou, the large geographic area in western Liaoning Province in northeastern China that includes the type locality. Jinzhousaurus is a large (est. 7 m (24 ft) long) iguanodont known from a nearly complete skeleton with a complete skull (Holotype: IVPP V12691 (Institute of Vertebrate Paleontology and Paleoanthropology, Beijing)), found in the Early Cretaceous (?Barremian) Dakangpu member of the middle Yixian Formation at Baicaigou, Toutai, Yixian County, western Liaoning Province, northeastern China. The skull is about 50 cm (20 in)long (tip of snout to posterior margin of parietal) and about 28 cm (11 in) in height, with the preorbital portion about 64% the entire length. Unlike in other iguanodontids, the antorbital fenestra is absent (similar to hadrosaurs), the frontal is extended forward but does not participate in the orbital border, and the fused parietals are very wide. The skull of Jinzhousaurus shows similarities in some features to both Iguanodon (long, tall snout) and Probactrosaurus (left and right squamosals in contact); the teeth are generally similar in appearance and arrangement to those of other iguanodontids--the maxillary teeth are smaller than the dentary teeth. Jinzhousaurus is the largest dinosaur found to date in the Liaoning beds--as a derived iguanodont it confirms that the deposits are Early Cretaceous rather than Late Jurassic in age. The holotype also represents the most complete iguanodontid specimen found in Asia to date, but the post-cranial skeleton has not been described in detail yet.

    Type Species: Jinzhousaurus yangi [YAHNG-ie] Wang & Xu 2001 : for the famous Chinese paleontologist Yang Zhongjian [Chung Chien Young] (1897-1979), "the founder of vertebrate paleontology in China." Ornithopoda Iguanodontia Early Cretaceous (?Barremian) China


    Jobaria Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, G.P. Wilson & J.A. Wilson 1999 "for Jobar"

    joh-BAHR-ee-uh (Tamacheck Jobar (a mythical animal) + - ia) (f) "Named after the mythical creature 'Jobar,' to whom local Tuaregs had attributed the exposed bones"--to indicate a large (18-21 m. (60-70 ft.) long, 20 ton) sauropod dinosaur found in the Early Cretaceous (Neocomian) Tiouraren Formation, Sahara region of central Niger (inhabited by the Tuareg people), West Africa. Jobaria is a strikingly primitive Early Cretaceous sauropod known from a fairly complete articulated adult skeleton (Holotype: MNN TIG3 (Musee National du Niger)) and referred material including several partial adult and subadult skeletons and a skull-- representing in all about 95% of the entire animal, including clavicles and gastralia. The tall, rounded skull is smaller and lighter in construction than in Camarasaurus, with a short snout and large external naris; the teeth are spoon-shaped with denticles along the margins. The neck is relatively short, with only 12 cervical vertebrae with moderately long centra--one specimen found had an articulated neck flexed into a C-shape, indicating the neck probably could be flexed upward to a fair degree in life. The neural spines are undivided; the tail vertebrae are amphiplatyan (flat at both ends). The limb proportions are primitive--the forelimb is not as elongated relative to the hindlimb as in Brachiosaurus. In many ways Jobaria resembles sauropods from the Middle Jurassic, and appears to represent a very conservative evolutionary line of sauropods outside other, more derived groups known from the Early Cretaceous.

    Type Species: Jobaria tiguidensis [tee-gee-DEN-sis] Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, G.P. Wilson & J.A. Wilson 1999: for the Falaise de Tiguidi, "a cliff near the base of which lie the horizons yielding all of its remains." Sauropoda Eusauropoda Early Cretaceous (Neocomian) WAfr. [added 11/99]


    Jubbulpuria von Huene 1932 "for Jabalpur"

    juh-buhl-POOR-ee-a (f) named for the Jubbulpore [Jabalpur] district, eastern India, where the fossil was found. Theropoda i.s. L. Cret. India [nomen dubium]


    Jurapteryx Howgate 1985 "Jura wing"

    ju-RAP-ter-iks (Jura + Gr. pteryx "wing, feather") (f) "from Jura, a common name for the Jurassic Alb where the specimen was discovered, and the name of the museum where the specimen is housed, (also indicative of the Jurassic age of the specimen)"; for the "Eichstätt specimen," described as a new genus from a small specimen. It is now thought that Archaeopteryx had a reptilian type of growth pattern, with gradual indeterminate growth, unlike modern birds, which have rapid early growth and determinate adult size. Most authorities therefore do not consider the variation in size among specimens attributed to Archaeopteryx to be a reliable basis for making taxonomic distinctions. [= Archaeopteryx]


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