Nanhsiungchelyidae
Nanhsiungchelyidae is an extinct family of land turtles known from Cretaceous deposits in Asia and North America. Nanhsiungchelyids were more terrestrial than many of their contemporaries, and may have gone extinct at the end of the Cretaceous as a result.

Willem van Valkenburg · CC BY 2.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- CryptodiraPBDB
- Diet
- omnivorePBDB, for Cryptodira
- Life habit
- aquaticPBDB, for Cryptodira
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- freshwaterPBDB, for Cryptodira
Time the record covers
At least 41 million years on record.
The record covers at least 113.2 Mya to 72.2 Mya. No occurrence read is dated outside 121.4 Mya to 66 Mya.
178 occurrences of Nanhsiungchelyidae on record, most of them in the Late Cretaceous. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
178 occurrencesThese are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
49 formations
- Hell Creek Formation · Montana Group22
- Kirtland Formation17
- Lance Formation13
- Baynshire Formation13
- Djadokhta Formation10
- Aguja Formation8
Loading coastlines…
The named rock units Nanhsiungchelyidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 further formations hold fewer occurrences each and are not listed. 9 occurrences have no formation on record, which is common for older literature.
Nanhsiungchelyidae and its relatives
Late CretaceousWhere Nanhsiungchelyidae and its relatives were recorded in the Late Cretaceous.
Found in the same rock
793 taxa- Basilemys77 sites
- Trionychidae70 sites
- Hadrosauridae57 sites
- Adocus53 sites
- Baenidae50 sites
- Theropoda39 sites
- Crocodylia31 sites
- Ceratopsidae30 sites
- Champsosaurus30 sites
- Chelydridae29 sites
- Tyrannosauridae29 sites
- Testudines28 sites
- Compsemys victa27 sites
- Myledaphus bipartitus26 sites
- Paronychodon21 sites
- Basilemys gaffneyi20 sites
- Lepisosteus occidentalis20 sites
- Scapherpeton tectum19 sites
- Ornithomimidae18 sites
- Ankylosauridae17 sites
- Hadrosaurinae17 sites
- Lepisosteidae17 sites
- Brachychampsa montana16 sites
- Cyclurus fragosus16 sites
The Paleobiology Database records 168 sites for Nanhsiungchelyidae, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
80 references- Re-assessment of Late Campanian (Kirtlandian) turtles from the Upper Cretaceous Fruitland and Kirtland formations, San Juan Basin, New Mexico, USA22
- New materials on turtles of the family Nanhsiungchelyidae from the Cretaceous of Uzbekistan and Mongolia, with a review of the Nanhsiungchelyid record in Asia21
- Patterns of geographic variation in latest Cretaceous vertebrates: evidence from the turtle component18
- Change of the Cretaceous turtle faunas in Mongolia7
- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota7
- Turtles of the Aguja and Javelina Formations, Upper Cretaceous (Campanian – Maastrichtian), West Texas5
- Turtles from the Kaiparowits Formation, Utah5
- Fossil Vertebrate Collections5
- Late Cretaceous and early Paleocene turtles of the Denver Basin, Colorado4
- The description and phylogenetic position of a new nanhsiungchelyid turtle from the Late Cretaceous of Mongolia3
- Turtles of the upper Aguja Formation (late Campanian), Big Bend National Park, Texas3
- Nonmarine turtles from the Aguja Formation (Late Cretaceous, Campanian) of Chihuahua, Mexico2
Each of the 178 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 68 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Nanhsiungchelyidae
- Source
- Wikipedia/Commons
- Credit
- Willem van Valkenburg
- Licence
- CC BY 2.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCryptodira through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Yeh 1966