Michelinoceras

Searched as Michelinoceras vindobonense. The Paleobiology Database treats Michelinoceras as the accepted name.

Michelinoceras is the oldest known genus of the Michelinocerida, more commonly known as the Orthocerida, characterized by long, slender, nearly cylindrical orthocones with a circular cross section, long camerae, very long body chambers, and a central or near central tubular siphuncle free of organic deposits. Septal necks are straight; connecting rings cylindrical and thin. Cameral deposits are well developed. A radula has been found in one species, with seven teeth per row. It had ten arms, two of which formed longer tentacles.

Michelinoceras

Haplochromis · CC BY-SA 3.0 · 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
OrthoceratidaePBDB
Diet
carnivorePBDB, for Orthocerida
Life habit
nektonicPBDB, for Orthocerida
Motility
actively mobilePBDB, for Orthocerida
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Orthocerida

Time the record covers

At most 17 million years on record.

Every occurrence read is dated to somewhere between 346.7 Mya and 330.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Carboniferous — about 2 of 2 occurrencesCarboniferous347–347 Mya — about 0.0 occurrences347–346 Mya — about 0.1 occurrences346–345 Mya — about 0.1 occurrences345–345 Mya — about 0.1 occurrences345–344 Mya — about 0.1 occurrences344–344 Mya — about 0.1 occurrences344–343 Mya — about 0.1 occurrences343–343 Mya — about 0.1 occurrences343–342 Mya — about 0.1 occurrences342–341 Mya — about 0.1 occurrences341–341 Mya — about 0.1 occurrences341–340 Mya — about 0.1 occurrences340–340 Mya — about 0.1 occurrences340–339 Mya — about 0.1 occurrences339–339 Mya — about 0.1 occurrences339–338 Mya — about 0.1 occurrences338–337 Mya — about 0.1 occurrences337–337 Mya — about 0.1 occurrences337–336 Mya — about 0.1 occurrences336–336 Mya — about 0.1 occurrences336–335 Mya — about 0.1 occurrences335–334 Mya — about 0.1 occurrences334–334 Mya — about 0.1 occurrences334–333 Mya — about 0.1 occurrences333–333 Mya — about 0.1 occurrences333–332 Mya — about 0.1 occurrences332–332 Mya — about 0.1 occurrences332–331 Mya — about 0.1 occurrences331–330 Mya — about 0.1 occurrences330–330 Mya — about 0.0 occurrences347.2 Mya329.8 Mya

2 occurrences of Michelinoceras 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

2 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

2 formations

Miller Creek and Wentworth Station — 45.02°N, 64.06°WMurphy Road — 45.01°N, 64.13°W

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The named rock units Michelinoceras has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Michelinoceras and its relatives

Carboniferous

Where Michelinoceras and its relatives were recorded in the Carboniferous.

Found in the same rock

1,897 taxa

The Paleobiology Database records 263 sites for Michelinoceras, and this reads 240 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

1 reference

Each of the 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content2

Picture of Michelinoceras

Credit
Haplochromis
Licence
CC BY-SA 3.0
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 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 itOrthoceratidae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Foerste 1932