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Baculites inornatus
Taxonomy
Baculites inornatus was named by Meek (1862). It is a 3D body fossil.
Synonymy list
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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.
†Baculites inornatus Meek 1862
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Matsumoto 1959 | The shell is of medium size, the maximum diameter of the section being about 50 mm. Tapering is gradua1;the body chamber of the adult is almost parallel sided, but moderate tapering occurs sometimes in the young stage. The section i8 higher than broad, and nearly elliptical; the ventral area is somewhat more narrowly rounded than the dorsal area. The growth-lines indicate a sinus of moderate depth on the sides, a long linguiform rostrum on the ventral area, and a short and broad projection on the dorsal area;the ventral projection is not acute but moderately rounded at its top, the dorsal projection very broadly arcuate, alld the bottom of the sillus broadly concave. The surface of the shell is typically smooth, except for the growth-lines. It is, however, occasionally ornamented with widely spaced, blunt, broad, lateral undulations and also with numerous, weak corrugation on the siphonal area. The saddles and lobes of the suture (except for I) are broad, squarish, and massive; the incisions are fine but not deep, givillg rise to phylloid terminals to the minor saddles. The saddles on both sides of L are of subequal size, or the external one is slightly narrower and lower than the internal one;they are nearly symmetrically bifid. The three minor saddles at the bottom of L are equally small, the median one being slightly lower than the top of the latera1, minor saddles. The anti8iphonal lobe (I) is relatively narrow and small; the antisiphonal saddles are lower than lateral saddles. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Early/Lower Coniacian to the top of the Late/Upper Campanian or 89.30000 to 70.60000 Ma
Collections (28 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Turonian - Late/Upper Campanian | USA (California) | Baculites inornatus (207823) | |
| Coniacian | USA (California) | Baculites inornatus (44233 44234 44235) | |
| Early/Lower Coniacian | Venezuela (Trujillo) | Baculites inornatus (88268) | |
| Santonian | USA (California) | Baculites sp. (44278) | |
| Early/Lower Santonian | USA (California) | Baculites inornatus (158104) | |
| Campanian | USA (California) | Baculites inornatus (224988 224991 224992 225371 225377 225647 225829 225927) | |
| Early/Lower Campanian | USA (California) | Baculites chicoensis (220366) Baculites inornatus (176369) | |
| Late/Upper Campanian | Japan | Baculites inornatus (176805 176808 176809) | |
| Late/Upper Campanian | USA (California) | Baculites inornatus (98225 167702 185168 207815 215574 225326) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | USA (California) | Baculites inornatus (44268) | |
| Maastrichtian | USA (California) | Baculites inornatus (185509) |