Symmetrodontoides
No picture of Symmetrodontoides was found. Wikidata and iDigBio were searched and had none. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Symmetrodontoides, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- SpalacolestinaePBDB
- Diet
- insectivorePBDB, for Mammaliaformes
- Life habit
- scansorialPBDB, for Mammaliaformes
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Mammalia
Time the record covers
At least 6.2 million years on record.
The record covers at least 89.8 Mya to 83.6 Mya. No occurrence read is dated outside 93.9 Mya to 72.2 Mya.
16 occurrences of Symmetrodontoides 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
16 occurrences- Late Cretaceous100%
These 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
6 formations
- Wahweap Formation7
- Straight Cliffs Formation4
- Milk River Formation2
- Kaiparowits Formation1
- Eagle Formation1
- Iron Springs Formation1
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The named rock units Symmetrodontoides has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Symmetrodontoides and its relatives
Late CretaceousWhere Symmetrodontoides and its relatives were recorded in the Late Cretaceous.
Found in the same rock
168 taxa- Albanerpetontidae9 sites
- Anura5 sites
- Cimolodon similis5 sites
- Paracimexomys5 sites
- Cimolomys4 sites
- Hadrosauridae4 sites
- Lepisosteidae4 sites
- Mesodma4 sites
- Paranyctoides4 sites
- Paronychodon4 sites
- Scincomorpha4 sites
- Albanerpeton galaktion3 sites
- Albanerpeton nexuosus3 sites
- Alphadontidae3 sites
- Anchistodelphys archibaldi3 sites
- Anguimorpha3 sites
- Bryceomys3 sites
- Bryceomys fumosus3 sites
- Cimolodon3 sites
- Dromaeosauridae3 sites
- Dromaeosaurinae3 sites
- Iqualadelphis lactea3 sites
- Marsupialia3 sites
- Mesodma formosa3 sites
The Paleobiology Database records 15 sites for Symmetrodontoides, 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
10 references- Symmetrodonts from the Late Cretaceous of southern Utah and distribution of archaic mammals in the Cretaceous of North America5
- Cretaceous vertebrate faunas from the Kaiparowits Plateau, south-central Utah2
- Cretaceous mammals from southern Utah. III. Therian mammals from the Turonian (early Late Cretaceous)2
- First fossil mammals from the Upper Cretaceous Eagle Formation (Santonian, northern Montana, USA), and mammal diversity during the Aquilan North American Land Mammal Age1
- Vertebrates of the Iron Springs Formation, Upper Cretaceous, southwestern Utah1
- Late Cretaceous mammals from Cedar Canyon, southwestern Utah1
- Mammalian paleontology and correlation of uppermost Cretaceous rocks of the Paunsaugunt Plateau, Utah1
- An Upper Cretaceous symmetrodont (Mammalia) from southern Utah1
- A primitive, "obtuse-angled" symmetrodont (Mammalia) from the Upper Cretaceous of Alberta, Canada1
- Additions to the mammalian local fauna from the Upper Milk River Formation (Upper Cretaceous), Alberta1
Each of the 16 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 content0
No picture of Symmetrodontoides was found. Wikidata and iDigBio were searched and had none.
Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Symmetrodontoides, or no answer at all. This entry cannot say which.
No 3D scan of Symmetrodontoides was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itSpalacolestinae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Fox 1976