Megapnosaurus
Megapnosaurus is an extinct monospecific genus of coelophysid theropod dinosaur that lived around 199-188 million years ago during the early part of the Jurassic Period in what is now Africa. The species was a small to medium-sized, lightly built, ground-dwelling, bipedal carnivore, that could grow up to 2.2 m (7.2 ft) long and weigh up to 13 kg (29 lb).

TotalDino · CC BY-SA 4.0 · 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
- CoelophysidaePBDB
- Diet
- carnivorePBDB, for Theropoda
- Life habit
- ground dwelling, solitaryPBDB, for Theropoda
- Motility
- actively mobilePBDB, for Theropoda
- Environment
- terrestrialPBDB, for Theropoda
Time the record covers
At least 1.9 million years on record.
The record covers at least 201.4 Mya to 199.5 Mya. No occurrence read is dated outside 237 Mya to 192.9 Mya.
8 occurrences of Megapnosaurus on record, most of them in the Early Jurassic. 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
8 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
5 formations
- Forest Sandstone Formation · Karoo Group4
- Nyamandhlovu Sandstones Formation1
- Elliot Formation · Stormberg Group1
- Lufeng Formation1
- Moenave Formation · Glen Canyon Group1
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The named rock units Megapnosaurus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Megapnosaurus and its relatives
Early JurassicWhere Megapnosaurus and its relatives were recorded in the Early Jurassic.
Found in the same rock
22 taxa- Prosauropoda3 sites
- Sphenodontidae2 sites
- Actinistia1 site
- Actinopterygii1 site
- Archosauria1 site
- Coelophysoidea1 site
- Crocodyliformes1 site
- Dibothrosuchus elaphros1 site
- Gyposaurus sinensis1 site
- Lissodus johnsonorum1 site
- Lufengosaurus1 site
- Lufengosaurus huenei1 site
- Lufengosaurus magnus1 site
- Pseudosuchia1 site
- Sauropoda1 site
- Semionotus1 site
- Sinoconodon rigneyi1 site
- Sinosaurus triassicus1 site
- Thyreophora1 site
- Yunnanosaurus1 site
- Yunnanosaurus huangi1 site
- Yunnanosaurus robustus1 site
The Paleobiology Database records 8 sites for Megapnosaurus, and this reads all of them. The number is how many of those sites it was catalogued from too.
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
8 references- History, geology and paleontology: St. George Dinosaur Discovery Site at Johnson Farm, Utah1
- First report of Megapnosaurus (Theropoda: Coelophysoidea) from China1
- Further material of the ceratosaurian dinosaur Syntarsus from the Elliot Formation (Early Jurassic) of South Africa1
- Morphological variation in small theropods and its meaning in systematics: evidence from Syntarsus rhodesiensis1
- The Anatomy of the Triassic Theropod Syntarsus rhodesiensis (Saurischia: Podokesauridae) and a Consideration of Its Biology1
- Milestones in Rhodesian paleontology (1901–1971)1
- First record of dinosaur footprints from Rhodesia1
- A new coelurosaurian dinosaur from the Forest Sandstone of Rhodesia1
Each of the 8 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. 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 content2
Picture of Megapnosaurus
- Source
- Wikipedia/Commons
- Credit
- TotalDino
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
Photography scan
- Source
- MorphoSource
- Licence
- In Copyright
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Megapnosaurus rhodesiensis · BP/8/0008 (BP008)
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 itCoelophysidae through timeFormations of the Early JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ivie et al. 2001