Morrowites

Morrowites, named by Cobban and Hook, 1983, is a moderate to large-sized ammonite with quadrangular to depressed whorls, broadly rounded to depressed venter, low ribs, umbilical and inner and outer ventrolateral tubercles and smooth early whorls except for occasional ribs along weak constrictions. The suture is moderately simple and has an unusually broad bifid first lateral lobe. It is so far restricted to the Lower Turonian stage, in the mid Cretaceous.

No picture of Morrowites was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Morrowites, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
EuomphaloceratinaePBDB
Diet
carnivorePBDB, for Ammonoidea
Life habit
nektonicPBDB, for Ammonoidea
Motility
fast-movingPBDB, for Ammonoidea
Vision
well-developedPBDB, for Cephalopoda
Environment
marinePBDB, for Cephalopoda

Time the record covers

At most 4.1 million years on record.

Every occurrence read is dated to somewhere between 93.9 Mya and 89.8 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 18 of 18 occurrencesLate Cretaceous94–94 Mya — about 0.0 occurrences94–94 Mya — about 0.7 occurrences94–94 Mya — about 0.7 occurrences94–93 Mya — about 0.7 occurrences93–93 Mya — about 0.7 occurrences93–93 Mya — about 0.7 occurrences93–93 Mya — about 0.7 occurrences93–93 Mya — about 0.7 occurrences93–93 Mya — about 0.7 occurrences93–92 Mya — about 0.7 occurrences92–92 Mya — about 0.7 occurrences92–92 Mya — about 0.7 occurrences92–92 Mya — about 0.7 occurrences92–92 Mya — about 0.7 occurrences92–92 Mya — about 0.7 occurrences92–91 Mya — about 0.7 occurrences91–91 Mya — about 0.7 occurrences91–91 Mya — about 0.7 occurrences91–91 Mya — about 0.7 occurrences91–91 Mya — about 0.7 occurrences91–90 Mya — about 0.7 occurrences90–90 Mya — about 0.7 occurrences90–90 Mya — about 0.7 occurrences90–90 Mya — about 0.7 occurrences90–90 Mya — about 0.7 occurrences90–90 Mya — about 0.0 occurrences94.4 Mya89.3 Mya

18 occurrences of Morrowites on record, most of them in the Late 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

18 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

7 formations

Mancos Shale — 35.73°N, 110.82°WMancos Shale — 34.74°N, 108.84°WMancos Shale — 34.77°N, 108.78°WMancos Shale — 34.44°N, 107.47°WMancos Shale — 34.08°N, 106.65°WOjinaga — 30.75°N, 105.18°WMarnes verts a Exogyres — 45.83°N, 0.65°WMarnes verts a Exogyres — 45.84°N, 0.63°WEze-Aku Shales — 6.43°N, 7.82°EBrießnitz — 51.00°N, 13.77°ESalinas — 14.25°S, 12.36°EGreenhorn Limestone — 39.53°N, 97.65°W

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The named rock units Morrowites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Morrowites and its relatives

Late Cretaceous

Where Morrowites and its relatives were recorded in the Late Cretaceous.

Found in the same rock

48 taxa

The Paleobiology Database records 14 sites for Morrowites, 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

13 references

Each of the 18 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. 1 further reference is 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 content0

No picture of Morrowites was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Morrowites, or no answer at all. This entry cannot say which.

No 3D scan of Morrowites 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 itEuomphaloceratinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cobban and Hook 1983