Myodocopida

The Myodocopida is one of the two orders within the Myodocopa, in turn a subclass of the Ostracoda. The Myodocopida are distinguished by a worm-like seventh limb, and, usually, a rostrum above an incisure (notch) from which the antennae can protrude. Unlike other ostracods, many species of the Myodocopida have lateral compound eyes Research on the cypridinid species Macrocypridina castanea have shown that the ‘window’ above its eyes—a transparent area on the shell—contains a nanostructure that transmits an unusually high 99% of blue light —the predominant light in its environment—allowing it to efficiently reach the eyes. Over the last thirty years there has been much research into the morphology, behaviour and distribution of myodocopids. More recently, DNA sequences have been used to investigate the phylogeny of various groups.

Myodocopida

Anna33 at English Wikipedia · CC BY 2.5 · 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
MyodocopaPBDB
Diet
suspension feeder, detritivorePBDB
Life habit
planktonicPBDB
Motility
actively mobilePBDB, for Ostracoda
Vision
limitedPBDB
Environment
marinePBDB, for Ostracoda

Time the record covers

At least 445 million years on record.

The record covers at least 445.2 Mya to 129 ka. No occurrence read is dated outside 452.8 Mya to 11.7 ka.

Ordovician — about 1 of 534 occurrencesSilurian — about 28 of 534 occurrencesDevonian — about 56 of 534 occurrencesDevonianCarboniferous — about 23 of 534 occurrencesCarboniferousPermian — about 113 of 534 occurrencesPermianEarly Triassic — about 13 of 534 occurrencesMiddle Triassic — about 72 of 534 occurrencesLate Triassic — about 16 of 534 occurrencesEarly Jurassic — about 157 of 534 occurrencesMiddle Jurassic — about 30 of 534 occurrencesLate Jurassic — about 3 of 534 occurrencesEarly Cretaceous — about 9 of 534 occurrencesEarly CretaceousLate Cretaceous — about 6 of 534 occurrencesPaleocene — about 0 of 534 occurrencesEocene — about 2 of 534 occurrencesOligocene — about 1 of 534 occurrencesMiocene — about 2 of 534 occurrencesPliocene — about 0 of 534 occurrencesPleistocene — about 1 of 534 occurrences462–446 Mya — about 0.8 occurrences446–431 Mya — about 2 occurrences431–416 Mya — about 29 occurrences416–400 Mya — about 3 occurrences400–385 Mya — about 1 occurrence385–369 Mya — about 28 occurrences369–354 Mya — about 23 occurrences354–339 Mya — about 5 occurrences339–323 Mya — about 2 occurrences323–308 Mya — about 2 occurrences308–293 Mya — about 21 occurrences293–277 Mya — about 9 occurrences277–262 Mya — about 21 occurrences262–246 Mya — about 101 occurrences246–231 Mya — about 64 occurrences231–216 Mya — about 3 occurrences216–200 Mya — about 7 occurrences200–185 Mya — about 70 occurrences185–169 Mya — about 112 occurrences169–154 Mya — about 5 occurrences154–139 Mya — about 3 occurrences139–123 Mya — about 3 occurrences123–108 Mya — about 3 occurrences108–92 Mya — about 5 occurrences92–77 Mya — about 2 occurrences77–62 Mya — about 1 occurrence62–46 Mya — about 0.2 occurrences46–31 Mya — about 2 occurrences31–15 Mya — about 1 occurrence15–0 Mya — about 3 occurrences445.2 Mya129 ka462 Mya0 Mya

534 occurrences of Myodocopida on record, most of them in the Early Jurassic. The Paleobiology Database records this as a living group. 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

534 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

87 formations

Marelb — 45.07°N, 28.78°EJurensismergel — 47.95°N, 7.82°EVale das Fontes — 40.03°N, 8.47°WTurmiel — 41.31°N, 0.81°WNaujoji Akmené — 54.67°N, 24.17°ENaujoji Akmené — 54.42°N, 22.78°ENaujoji Akmené — 55.78°N, 21.83°ENaujoji Akmené — 54.55°N, 22.80°ENaujoji Akmené — 55.75°N, 22.50°ENaujoji Akmené — 54.52°N, 24.13°ENaujoji Akmené — 54.77°N, 24.23°ENaujoji Akmené — 54.82°N, 23.93°ENaujoji Akmené — 54.48°N, 24.62°ENaujoji Akmené — 54.25°N, 25.62°ENaujoji Akmené — 55.72°N, 23.07°ENiewachlów — 50.78°N, 20.94°ENiewachlów — 50.83°N, 20.74°ESão Gião — 40.03°N, 8.47°WBrian de Vère — 44.07°N, 1.74°EUzum Bair — 45.07°N, 28.78°EOpalinuston — 47.95°N, 7.82°EEpiskopi — 37.31°N, 23.42°EEpiskopi — 37.32°N, 23.50°EPóvoa da Lomba — 40.03°N, 8.47°WDalong — 22.27°N, 107.69°EChangxing — 31.08°N, 119.71°EChangxing — 25.73°N, 117.74°EAkhura — 38.98°N, 45.53°ELemede — 40.03°N, 8.47°WYinkeng — 31.08°N, 119.70°ENagyvisnyo — 48.14°N, 20.43°ENagyvisnyo — 48.15°N, 20.50°ENagyvisnyo — 48.15°N, 20.44°EBeacon Limestone — 50.94°N, 2.85°WBeacon Limestone — 50.94°N, 2.85°WCardano — 42.97°N, 0.87°WBeykoz — 41.63°N, 33.28°EAli Bashi — 38.73°N, 45.58°EAli Bashi — 39.01°N, 45.43°EHuglu Tuffite — 36.92°N, 34.24°ENam Maholan — 17.11°N, 101.88°E

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The named rock units Myodocopida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 63 further formations hold fewer occurrences each and are not listed. 120 occurrences have no formation on record, which is common for older literature.

Myodocopida and its relatives

Early Jurassic

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

Found in the same rock

1,700 taxa

The Paleobiology Database records 336 sites for Myodocopida, 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

105 references

Each of the 534 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. 93 further references are not listed. 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 Myodocopida

Credit
Anna33 at English Wikipedia
Licence
CC BY 2.5
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itMyodocopa through timeFormations of the Early JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sars 1866