Genus
Ichnogenus Formal taxon Extinct

Plesiornis

Hitchcock 1858

Plesiornis, whose name means "nearly bird", is an ichnogenus of theropod dinosaur footprint. Tracks attributed to this ichnogenus are found in the Late Triassic-Early Jurassic of North America and Poland. The definitive trackmaker of this ichnotaxon is currently uncertain.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
5
Group
Dinosaures
Terrestrial
🦴
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
›
Saurischia Unranked clade
›
Plesiornis Genus
Fossil sites 5 geolocated sites
Distribution
Top countries
🇺🇸 United States
4
🇵🇱 Poland
1
Geological formations
Portland
2
Manassas Sandstone
1
Turners Falls
1
Przysucha
1
Temporal distribution
Sinemurian (199.5–192.9 Ma)
2
Hettangian (201.4–199.5 Ma)
2
Norian (227.3–205.7 Ma)
1
Species (1)
Plesiornis pilulatus 227 Ma
Bibliography
Original description
R. S. Lull. 1953. Triassic life of the Connecticut Valley (revised). State of Connecticut State Geological and Natural History Survey Bulletin 81:1-336
Bibliography (5)
G. Gierlinski and G. Pienkowski. 1999. Dinosaur track assemblages from the Hettangian of Poland. Geological Quarterly 43(3):329-346
R. E. Weems and P. G. Kimmel. 1993. Upper Triassic reptile footprints and a coelacanth fish scale from the Culpeper Basin, Virginia. Proceedings of the Biological Society of Washington 16(2):390-401
C. H. Hitchcock. 1889. Recent progress in ichnology. Proceedings of the Boston Society of Natural History 24(8):117-127
C. H. Hitchcock. 1865. Appendix [B]. Descriptive catalogue of the specimens in the Hitchcock Ichnological Cabinet of Amherst College. Supplement to the Ichnology of New England. A Report to the Government of Massachusetts in 1863
E. Hitchcock. 1858. Ichnology of New England. A Report on the Sandstone of the Connecticut Valley, Especially its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts DOI ↗