Frechiella

Frechiella is an ammonite with a smooth, somewhat globose involute shell that lived during the later part of the Early Jurassic, which has been found in England and Italy. The shell is coiled so that the outer whorls cover most of the inner, leaving the inner whorls only slightly exposed. The outer rim, known as the venter, is broadly arched, with either a low narrow keel bordered by small grooves, or a large median groove.

Frechiella

Kurt Meiers · CC0 · via GBIF. 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
BouleiceratinaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 9.5 million years on record.

Every occurrence read is dated to somewhere between 184.2 Mya and 174.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Early Jurassic — about 42 of 42 occurrencesEarly JurassicMiddle Jurassic — about 0 of 42 occurrences184–184 Mya — about 0.0 occurrences184–184 Mya — about 0.0 occurrences184–183 Mya — about 0.0 occurrences183–183 Mya — about 0.0 occurrences183–183 Mya — about 2 occurrences183–182 Mya — about 2 occurrences182–182 Mya — about 2 occurrences182–182 Mya — about 2 occurrences182–181 Mya — about 2 occurrences181–181 Mya — about 2 occurrences181–181 Mya — about 2 occurrences181–180 Mya — about 2 occurrences180–180 Mya — about 2 occurrences180–179 Mya — about 2 occurrences179–179 Mya — about 2 occurrences179–179 Mya — about 2 occurrences179–178 Mya — about 2 occurrences178–178 Mya — about 2 occurrences178–178 Mya — about 2 occurrences178–177 Mya — about 2 occurrences177–177 Mya — about 2 occurrences177–177 Mya — about 2 occurrences177–176 Mya — about 2 occurrences176–176 Mya — about 2 occurrences176–176 Mya — about 2 occurrences176–175 Mya — about 2 occurrences175–175 Mya — about 2 occurrences175–175 Mya — about 1.0 occurrences184.7 Mya174.2 Mya

42 occurrences of Frechiella 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

42 occurrences

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

7 formations

Kisgerecse — 47.70°N, 18.43°EKisgerecse — 47.71°N, 18.48°EBugarone — 43.33°N, 13.22°ESubbetic Basin — 37.59°N, 3.21°WSubbetic Basin — 38.13°N, 1.47°WPuchenque — 35.48°S, 69.92°WTölgyhát — 47.71°N, 18.48°EKisgerecse Marl — 47.70°N, 18.49°EAlum Shale — 54.49°N, 0.60°W

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The named rock units Frechiella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 22 occurrences have no formation on record, which is common for older literature.

Frechiella and its relatives

Early Jurassic

Where Frechiella and its relatives were recorded in the Early Jurassic.

Found in the same rock

84 taxa

The Paleobiology Database records 29 sites for Frechiella, 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

Each of the 42 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 Frechiella

Source
GBIF
Credit
Kurt Meiers
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

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 itBouleiceratinae through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.