Recently, several studies have found the family "Hypsilophodontidae" to be paraphylitic (like "Iguanodontidae") instead of a valid clade. Also, Leaellynasaura and other former "hypsilophodonts" have been found to be either inside or outside of Ornithopoda depending on the study.
| Attributes | Values |
|---|
| rdf:type
| |
| rdfs:label
| |
| rdfs:comment
| - Recently, several studies have found the family "Hypsilophodontidae" to be paraphylitic (like "Iguanodontidae") instead of a valid clade. Also, Leaellynasaura and other former "hypsilophodonts" have been found to be either inside or outside of Ornithopoda depending on the study.
- Leaellynasaura is a relatively small dinosaur, about 90 centimeters (3 feet) in length.[1] It is known from several specimens including two nearly complete skeletons and two fragmentary skulls. It has been variously described as a hypsilophodontid, a primitive iguanodontian and primitive ornithischian (Genasauria). The most recent assessment describes it as a non-iguanodontian ornithopod.[3] Herne (2009) argued that, unlike more advanced ornithischians, Leaellynasaura lacked ossified tendons in its tail. He also argued that the tail is noteworthy as among the longest relative to its body size of any ornithischian: the tail was three times as long as the rest of the body combined; it also has more tail vertebrae than any other ornithischians except for some hadrosaurs.[4] However, in a subs
- Leaellynasaura was an Australian polar dinosaur. At this period in time, Victoria would have been within the Antarctic Circle. Although this latitude is very cold today, it was less frigid in the mid-Cretaceous. However, because of the Earth's tilt, Leaellynasaura and its contemporaries would still have been living under conditions with extended periods of daylight and night. Depending on latitude, it is possible that the sun might not have risen for several weeks or months in the winter, which means that Leaellynasaura would have had to live in the dark for perhaps months at a time. This is particularly relevant to the fact that a skull fragment interpreted as being from Leaellynasaura shows enlarged eyes and the suggestion of proportionally large optic lobes, as if it had evolved to be r
|
| sameAs
| |
| Length
| |
| dcterms:subject
| |
| dbkwik:dinosaur-ki...iPageUsesTemplate
| |
| dbkwik:jurassic-pa...iPageUsesTemplate
| |
| dbkwik:jurassicpar...iPageUsesTemplate
| |
| dbkwik:walking-wit...iPageUsesTemplate
| |
| dbkwik:walkingwith...iPageUsesTemplate
| |
| Appearances
| |
| Scientific name
| - Leaellynasaurua amicagraphica
|
| Primary diet
| |
| name meaning
| |
| Weight
| |
| Meaning
| |
| Image caption
| - Jurassic Park Institute Artwork
|
| dbkwik:dinosaurkin...iPageUsesTemplate
| |
| Time Period
| |
| Diet
| |
| Location
| |
| abstract
| - Recently, several studies have found the family "Hypsilophodontidae" to be paraphylitic (like "Iguanodontidae") instead of a valid clade. Also, Leaellynasaura and other former "hypsilophodonts" have been found to be either inside or outside of Ornithopoda depending on the study.
- Leaellynasaura was an Australian polar dinosaur. At this period in time, Victoria would have been within the Antarctic Circle. Although this latitude is very cold today, it was less frigid in the mid-Cretaceous. However, because of the Earth's tilt, Leaellynasaura and its contemporaries would still have been living under conditions with extended periods of daylight and night. Depending on latitude, it is possible that the sun might not have risen for several weeks or months in the winter, which means that Leaellynasaura would have had to live in the dark for perhaps months at a time. This is particularly relevant to the fact that a skull fragment interpreted as being from Leaellynasaura shows enlarged eyes and the suggestion of proportionally large optic lobes, as if it had evolved to be routinely active in low-light conditions.
- Leaellynasaura is a relatively small dinosaur, about 90 centimeters (3 feet) in length.[1] It is known from several specimens including two nearly complete skeletons and two fragmentary skulls. It has been variously described as a hypsilophodontid, a primitive iguanodontian and primitive ornithischian (Genasauria). The most recent assessment describes it as a non-iguanodontian ornithopod.[3] Herne (2009) argued that, unlike more advanced ornithischians, Leaellynasaura lacked ossified tendons in its tail. He also argued that the tail is noteworthy as among the longest relative to its body size of any ornithischian: the tail was three times as long as the rest of the body combined; it also has more tail vertebrae than any other ornithischians except for some hadrosaurs.[4] However, in a subsequent revision of fossil material attributed to Leaellynasaura Herne (2013) could not confidently assign the postcranial skeletons with long tails (or indeed any fossils other than the holotype incomplete cranium MV P185991, right maxilla MV P186352 and left maxillary tooth MV P186412, all from late Aptian-early Albian Eumeralla Formation) to Leaellynasaura amicagraphica.
|
![[RDF Data]](/fct/images/sw-rdf-blue.png)