Largirostrornis fossil map
Where fossils of Largirostrornis have been found, shown on the Earth as it looked about 115 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 115 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Theropods |
|---|---|
| Lived | 121.4–113.2 million years ago (Aptian) |
| Periods | Cretaceous |
| Family | Cuspirostrisornithidae |
| Named by | Hou 1997 |
| Fossil records | 1 occurrences at 1 locations (PBDB) |
| Found in | China |
| Rock formations | Jiufotang |
About Largirostrornis
Largirostrornis is a genus of enantiornithean bird. One species has been named, Largirostornis sexdentoris. It lived during the Early Cretaceous and is known from fossils found in the Jiufotang Formation in Liaoning province, People's Republic of China. Some researchers believe this species to be a junior synonym of the similar Cathayornis yandica.
Largirostrornis is known from one fossil, slab and counterslab, found in the Jiufotang Formation in Liaoning province, People's Republic of China. The Jiufotang Formation is dated to the Early Cretaceous period, late Aptian age, 120.3 ±0.7 million years ago.
The holotype fossil is in the collection of the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing, China. It has been given catalog number IVPP 10531.
L. sexdentornis had in 1997 a torso longer than all other known Enantiornithes. It is slightly larger than Cuspirostrisornis, with a skull about 32 millimeters long. The paired dentaries and premaxillae each hold six teeth. There are tall neural spines on the cervical and dorsal vertebrae.
Text in “About” is quoted from the Wikipedia article Largirostrornis (revision 1379859919), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q1528474.
