Chondrites

Chondrites is a trace fossil ichnogenus, preserved as small branching burrows of the same diameter that superficially resemble the roots of a plant. The origin of these structures is currently unknown. Chondrites is found in marine sediments from the Cambrian period of the Paleozoic onwards. It is especially common in sediments that were deposited in reduced-oxygen environments.

A picture published with the record for Chondrites. What it shows has not been checked.

Eberhard Fraas; digitized by Hl1948 · 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.

On record

Recorded, not inferred
Sits inside
IchnofossilsPBDB

Time the record covers

At least 515 million years on record.

The record covers at least 521 Mya to 5.333 Mya. No occurrence read is dated outside 530.7 Mya to 3.6 Mya.

Cambrian — about 5 of 135 occurrencesCambrianOrdovician — about 7 of 135 occurrencesSilurian — about 4 of 135 occurrencesDevonian — about 18 of 135 occurrencesDevonianCarboniferous — about 9 of 135 occurrencesCarboniferousPermian — about 1 of 135 occurrencesPermianEarly Triassic — about 0 of 135 occurrencesMiddle Triassic — about 0 of 135 occurrencesLate Triassic — about 0 of 135 occurrencesEarly Jurassic — about 10 of 135 occurrencesMiddle Jurassic — about 13 of 135 occurrencesLate Jurassic — about 18 of 135 occurrencesEarly Cretaceous — about 33 of 135 occurrencesLate Cretaceous — about 11 of 135 occurrencesPaleocene — about 0 of 135 occurrencesEocene — about 2 of 135 occurrencesOligocene — about 1 of 135 occurrencesMiocene — about 3 of 135 occurrencesPliocene — about 1 of 135 occurrencesPleistocene — about 0 of 135 occurrences541–523 Mya — about 3 occurrences523–505 Mya — about 2 occurrences505–487 Mya — about 0.2 occurrences487–469 Mya — about 3 occurrences469–451 Mya — about 2 occurrences451–433 Mya — about 3 occurrences433–415 Mya — about 3 occurrences415–397 Mya — about 9 occurrences397–379 Mya — about 9 occurrences361–343 Mya — about 3 occurrences343–325 Mya — about 2 occurrences325–307 Mya — about 4 occurrences271–253 Mya — about 0.9 occurrences253–235 Mya — about 0.1 occurrences216–198 Mya — about 1 occurrence198–180 Mya — about 8 occurrences180–162 Mya — about 14 occurrences162–144 Mya — about 15 occurrences144–126 Mya — about 18 occurrences126–108 Mya — about 13 occurrences108–90 Mya — about 7 occurrences90–72 Mya — about 3 occurrences72–54 Mya — about 5 occurrences54–36 Mya — about 2 occurrences36–18 Mya — about 2 occurrences18–0 Mya — about 3 occurrences521 Mya5.333 Mya541 Mya0 Mya

135 occurrences of Chondrites on record, most of them in the Early Cretaceous. 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

135 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

57 formations

Kap Leslie — 70.48°N, 21.97°WSchrambach — 47.91°N, 14.35°EOpalinuston — 47.43°N, 8.15°EMoscow — 42.81°N, 77.90°WMoscow — 42.77°N, 77.83°WMoscow — 42.82°N, 77.57°WMoscow — 42.78°N, 77.33°WMoscow — 42.67°N, 76.95°WPrairie Bluff — 33.03°N, 88.56°WPrairie Bluff — 32.23°N, 87.50°WPrairie Bluff — 32.14°N, 87.42°WPrairie Bluff — 32.04°N, 86.78°WMospyne — 48.23°N, 39.21°EMospyne — 48.24°N, 39.34°EKiowa — 37.22°N, 99.90°WKiowa — 37.44°N, 99.08°WKiowa — 37.44°N, 99.18°WSpartan Glacier — 70.75°S, 68.50°WHigh Tor Limestone — 51.63°N, 3.97°WPraha — 49.42°N, 15.86°EGrès verts helvétiques — 45.99°N, 6.71°EGrès verts helvétiques — 45.99°N, 6.58°EHunsrueck Slate — 49.87°N, 7.38°EHunsrueck Slate — 49.85°N, 7.32°EMural — 30.13°N, 110.70°WMural — 31.27°N, 110.03°WShemshak — 36.43°N, 54.47°EAl Rose — 36.96°N, 118.09°WRacine — 43.04°N, 87.91°WFolkestone — 51.08°N, 1.18°ESandgate — 51.23°N, 0.58°WEdwardsville — 39.00°N, 86.25°WFossil Hill Limestone — 33.00°S, 149.00°ECraie de Villedieu — 45.00°N, 0.37°EChotec Limestone — 49.92°N, 14.07°ETal — 30.45°N, 78.08°EChotec — 50.08°N, 14.43°E

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The named rock units Chondrites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 33 further formations hold fewer occurrences each and are not listed. 19 occurrences have no formation on record, which is common for older literature.

Chondrites and its relatives

Early Cretaceous

Where Chondrites and its relatives were recorded in the Early Cretaceous.

Found in the same rock

1,382 taxa

The Paleobiology Database records 122 sites for Chondrites, 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

67 references

Each of the 135 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. 55 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 content2

Picture of Chondrites

Credit
Eberhard Fraas; digitized by Hl1948
Licence
Public Domain
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

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 itIchnofossils through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. von Sternberg 1833