Lessemsaurus
| Lessemsaurus | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | †Sauropodomorpha |
| Clade: | †Sauropoda |
| Clade: | †Lessemsauridae |
| Genus: | †Lessemsaurus Bonaparte 1999
|
| Species: | †L. sauropoides
|
| Binomial name | |
| †Lessemsaurus sauropoides Bonaparte 1999 | |
Lessemsaurus is an
sauropod dinosaur belonging to Lessemsauridae
.
Naming and description
The
José Fernando Bonaparte in 1999 in honor of Don Lessem, a writer of popular science books. It was found in the Los Colorados Formation of the Ischigualasto-Villa Unión Basin in La Rioja Province, Argentina.[1]
It was discovered in strata dating to the
stage, around 210 million years ago.[2][3] It is estimated to have reached 10–12 metres (33–39 ft) long and weighed over 7 metric tons (7.7 short tons), possibly up to 8–10 metric tons (8.8–11.0 short tons), in maximum body mass.[4][5][6][7]
Classification
A cladogram after Pol, Garrido & Cerda, 2011,[8] illustrates a possible placing of Lessemsaurus and Antetonitrus in Sauropodomorpha:
In 2018, Apaldetti et al. recovered it as part of a clade they named Lessemsauridae, after Lessemsaurus. Their cladogram is reproduced below:[9]
Sauropodiformes
|
|
The following cladogram shows the position of Lessemsaurus outside of Sauropoda, according to Oliver W. M. Rauhut and colleagues, 2020:[10]
| Massopoda |
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References
- ISBN 0-520-24209-2.
- ^ Bonaparte, J. F. (1999). "Evolución de las vértebras presacras en Sauropodomorpha". Ameghiniana. 36: 115–187.
- ^ Pol, D.; Powell, J. E. (2007). "New information on Lessemsaurus sauropoides (Dinosauria: Sauropodomorpha) from the Upper Triassic of Argentina". Special Papers in Palaeontology. 77: 223–243.
- PMID 21298087.
- .
- S2CID 256705065.
- PMID 30270189.
- PMID 21298087.
- S2CID 49669597.
- S2CID 220294939.
External links
Media related to Lessemsaurus at Wikimedia Commons
