Redfieldius gracilis

Redfieldius_gracilis_Exhibit_Museum_of_Natural_History.JPG : Daderot derivative work: Haplochromis ( talk ) · Public Domain · via Wikidata/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
- RedfieldiusPBDB
- Diet
- carnivorePBDB, for Palaeonisciformes
- Life habit
- nektonicPBDB, for Palaeonisciformes
- Motility
- actively mobilePBDB, for Palaeonisciformes
Time the record covers
At least 6.2 million years on record.
The record covers at least 205.7 Mya to 199.5 Mya. No occurrence read is dated outside 227.3 Mya to 192.9 Mya.
7 occurrences of Redfieldius gracilis 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
7 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
- Boonton Formation · Agawam Group2
- Shuttle Meadow Formation · Meriden Group2
- East Berlin Formation · Meriden Group1
- Portland Formation · Agawam Group1
- Bull Run Formation · Chatham Group1
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The named rock units Redfieldius gracilis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Redfieldius gracilis and its relatives
Early JurassicWhere Redfieldius gracilis and its relatives were recorded in the Early Jurassic.
Found in the same rock
21 taxa- Semionotus4 sites
- Diplurus longicaudatus3 sites
- Ptycholepis marshii3 sites
- Coelophysis1 site
- Diplostraca1 site
- Estheriidae indet.1 site
- Eurynotus tenuiceps1 site
- Loperia1 site
- Palaeoniscus agassizii1 site
- Redfieldius minor1 site
- Redfieldius ornatus1 site
- Redfieldius redfieldi1 site
- Semionotus agassizii1 site
- Semionotus elegans1 site
- Semionotus fultus1 site
- Semionotus gigas1 site
- Semionotus lineatus1 site
- Semionotus micropterus1 site
- Semionotus ovatus1 site
- Semionotus robustus1 site
- Tracheophyta1 site
The Paleobiology Database records 6 sites for Redfieldius gracilis, 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
3 references- Redfieldiid fishes from the Triassic-Liassic Newark Supergroup of eastern North America4
- New eastern American Triassic fishes and Triassic correlations2
- A new Triassic fossil field1
Each of the 7 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 content1

Picture of Redfieldius gracilis
- Source
- Wikidata/Commons
- Credit
- Redfieldius_gracilis_Exhibit_Museum_of_Natural_History.JPG : Daderot derivative work: Haplochromis ( talk )
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Redfieldius gracilis was found in MorphoSource and Sketchfab.
Smithsonian Open Access was 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 itRedfieldius through timeFormations of the Early JurassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Redfield 1837)