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Trachybaculites columna

Cephalopoda - Ammonitida - Baculitidae

Taxonomy
Baculites columna was named by Morton (1834).

It was recombined as Trachybaculites columna by Landman and Cobban (2003).

Synonymy list
YearName and author
1834Baculites columna Morton p. 44 figs. pl. 19, fig. 8
1941Baculites columna Stephenson pp. 405 - 406 figs. PL 76, figs. 1-4
1959Baculites columna Matsumoto p. 161 figs. Pl.30, fig. 1a-c; Pl.34, fig. 4a-c; Pl.43, fig. 4a-c; Text-figs. 80a, b, 81
2003Trachybaculites columna Landman and Cobban p. 21 fig. 16

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAncyloceratinaWiedmann 1966
superfamilyTurrilitoidea(Gill 1871)
familyBaculitidaeGill 1871
genusTrachybaculites
speciescolumna(Morton 1834)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Trachybaculites columna Morton 1834
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Diagnosis
ReferenceDiagnosis
T. Matsumoto 1959The shell is small and shows slow tapering. The section is higher than.畑oad and nearly elliptical, with the venter slightly more narrowly rounded than the dorsum. The shell is ornamented with widely spaced ribs of moderate illtensity, which start from the thickest point near the dorsolateral shoulder, run obliquely forward on the main part of the flank, and cross the center with projection and undiminished strength;the extensions of the ribs to the antisiphonal area are weakened and show less, pronounced forward curve on the dorsum. The suture is simple, with shallow minor incisions. The saddles are broad, the one between E and L being the broadest. They are symmetrically bifid. The lobes are much narrower than the saddles, but their stems are not constricted.
Measurements
No measurements are available
Composition: aragoniteo
Environment: marinec
Locomotion: fast-movingo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:27:03
Modified: 2009-10-08 14:14:55
Source: o = order, c = class
References: Kiessling 2004, Kiessling 2003

Age range: base of the Late/Upper Maastrichtian to the top of the Early/Lower Maastrichtian or 70.60000 to 66.00000 Ma

Collections (38 total)


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.1 - 66.0USA (California) Baculites columna (185495 185758 220358 225825)
Maastrichtian72.1 - 66.0USA (Texas) Baculites columna (4601)
Early/Lower Maastrichtian70.6 - 66.0USA (Alabama) Baculites columna (4240 4247)
Early/Lower Maastrichtian70.6 - 66.0USA (California) Baculites fairbanksi (225632)
Early/Lower Maastrichtian70.6 - 66.0USA (Mississippi) Baculites columna (4101)
Late/Upper Maastrichtian70.6 - 66.0USA (Alabama) Baculites columna (4175 4177 4187 4194 4195 4197 4199 4201 4202 4203 4214 4215 4216 4225 4228 4230 4231 4236 83225) Trachybaculites columna (205799 205803)
Late/Upper Maastrichtian70.6 - 66.0USA (South Carolina) Baculites columna (4344 4351)
Late/Upper Maastrichtian70.6 - 66.0USA (Colorado) Trachybaculites columna (178289)
Late/Upper Maastrichtian70.6 - 66.0USA (Texas) Baculites columna (7446)
Late/Upper Maastrichtian70.6 - 66.0USA (South Dakota) Baculites columna (88510)
Late/Upper Maastrichtian70.6 - 66.0USA (Mississippi) Baculites columna (4160 4161 4164)