Dictyonema

Searched as Dictyonema krafti. The Paleobiology Database treats Dictyonema as the accepted name.

Dictyonema is a genus of dendroid graptolite. While initially thought to be a bridge between dendroid and graptoloid graptolites due to its seeming to possess dissepiments, Dictyonema is now understood to be an acanthograptid with a unique style of 'thecal bridges' where thecae from one stipe cross over to adjacent stipes.

Dictyonema

Published by Maletz, J. · CC BY 4.0 · 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
AcanthograptidaePBDB
Diet
suspension feederPBDB, for Dendroidea
Life habit
planktonicPBDB
Motility
stationaryPBDB, for Dendroidea
Vision
blindPBDB, for Graptolithina

Time the record covers

At most 7.7 million years on record.

The one occurrence read is dated to somewhere between 477.1 Mya and 469.4 Mya, which is a dating window rather than a span.

Ordovician — about 1 of 1 occurrenceOrdovician477–477 Mya — about 0.0 occurrences477–477 Mya — about 0.0 occurrences477–476 Mya — about 0.0 occurrences476–476 Mya — about 0.0 occurrences476–476 Mya — about 0.0 occurrences476–476 Mya — about 0.0 occurrences476–475 Mya — about 0.0 occurrences475–475 Mya — about 0.0 occurrences475–475 Mya — about 0.0 occurrences475–474 Mya — about 0.0 occurrences474–474 Mya — about 0.0 occurrences474–474 Mya — about 0.0 occurrences474–474 Mya — about 0.0 occurrences474–473 Mya — about 0.0 occurrences473–473 Mya — about 0.0 occurrences473–473 Mya — about 0.0 occurrences473–472 Mya — about 0.0 occurrences472–472 Mya — about 0.0 occurrences472–472 Mya — about 0.0 occurrences472–472 Mya — about 0.0 occurrences472–471 Mya — about 0.0 occurrences471–471 Mya — about 0.0 occurrences471–471 Mya — about 0.0 occurrences471–470 Mya — about 0.0 occurrences470–470 Mya — about 0.0 occurrences470–470 Mya — about 0.0 occurrences470–469 Mya — about 0.0 occurrences469–469 Mya — about 0.0 occurrences477.6 Mya468.9 Mya

1 occurrence of Dictyonema on record, most of them in the Ordovician. 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

Klabava — 50.00°N, 14.00°E

Loading coastlines…

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

Dictyonema and its relatives

Ordovician

Where Dictyonema and its relatives were recorded in the Ordovician.

Found in the same rock

1,519 taxa

The Paleobiology Database records 174 sites for Dictyonema, 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

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 content3

Picture of Dictyonema

Credit
Published by Maletz, J.
Licence
CC BY 4.0
Commercial use
the licence allows it

Photogrammetry

Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record
Specimen
dictyonema flabelliforme · MST:PALEO:MST-SP-3197

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial-ShareAlike
Commercial use
the licence does not allow it

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 itAcanthograptidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1851