Macadens olsoni n. gen. n. sp.

Macadens is an extinct genus of cartilaginous fish, likely belonging to the subclass Holocephali, discovered in Mammoth Cave National Park, Kentucky. It contains a single known species, Macadens olsoni, known from a fossilized tooth whorl dating to the Late Mississippian subperiod of the Carboniferous period, approximately 340 to 335 million years ago. The genus name an abbreviation for "Mammoth Cave denizen", while the species name is in honor of retired Mammoth Cave park scientist Rickard Olson.

A picture published with the record for Macadens olsoni n. gen. n. sp.. What it shows has not been checked.

United States National Park Service · Public Domain · 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.

Time the record covers

At most 17 million years on record.

The one occurrence read is dated to somewhere between 346.7 Mya and 330.3 Mya, which is a dating window rather than a span.

Carboniferous — about 1 of 1 occurrenceCarboniferous347–347 Mya — about 0.0 occurrences347–346 Mya — about 0.0 occurrences346–345 Mya — about 0.0 occurrences345–345 Mya — about 0.0 occurrences345–344 Mya — about 0.0 occurrences344–344 Mya — about 0.0 occurrences344–343 Mya — about 0.0 occurrences343–343 Mya — about 0.0 occurrences343–342 Mya — about 0.0 occurrences342–341 Mya — about 0.0 occurrences341–341 Mya — about 0.0 occurrences341–340 Mya — about 0.0 occurrences340–340 Mya — about 0.0 occurrences340–339 Mya — about 0.0 occurrences339–339 Mya — about 0.0 occurrences339–338 Mya — about 0.0 occurrences338–337 Mya — about 0.0 occurrences337–337 Mya — about 0.0 occurrences337–336 Mya — about 0.0 occurrences336–336 Mya — about 0.0 occurrences336–335 Mya — about 0.0 occurrences335–334 Mya — about 0.0 occurrences334–334 Mya — about 0.0 occurrences334–333 Mya — about 0.0 occurrences333–333 Mya — about 0.0 occurrences333–332 Mya — about 0.0 occurrences332–332 Mya — about 0.0 occurrences332–331 Mya — about 0.0 occurrences331–330 Mya — about 0.0 occurrences330–330 Mya — about 0.0 occurrences347.2 Mya329.8 Mya

1 occurrence of Macadens olsoni n. gen. n. sp. on record, most of them in the Carboniferous. 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

1 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

1 formation

Ste. Genevieve — 37.19°N, 86.10°W

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The named rock units Macadens olsoni n. gen. n. sp. has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Macadens olsoni n. gen. n. sp. and its relatives

Carboniferous

Where Macadens olsoni n. gen. n. sp. and its relatives were recorded in the Carboniferous.

Found in the same rock

18 taxa

The Paleobiology Database records 1 site for Macadens olsoni n. gen. n. sp., 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

1 reference

Each of the 1 occurrence 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Macadens olsoni n. gen. n. sp.

Credit
United States National Park Service
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Macadens olsoni n. gen. n. sp. 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.

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 itFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.