Cast of Baculites grandis, copyright Ninjatacoshell.

Belongs within: Aptychophora.

The Baculitidae are a Cretaceous group of ammonites whose conchs have an initial coiled section followed by a more or less straight juvenile and adult section (Enseger & Keupp 2002).

    |--Eubaculites Spath 1926 KM08
    |    `--E. carinatus (Morton 1834) KM08 (see below for synonymy)
    |--Sciponoceras K79
    |    |--S. bohemicum K79
    |    |--S. gracile K79
    |    `--S. kossmati K79
    `--Baculites Lamarck 1799 EK02 [incl. Rugaptychus Sp98]
         |--B. anceps K79
         |--B. aquilasensis K79
         |--B. asper K79
         |--B. asperiformis K79
         |--B. baculus K79
         |--B. boulei K79
         |--B. capensis K79
         |--B. chicoense K79
         |--B. claviformis Stephenson 1941 OZ89
         |--B. clinolobatus K79
         |--B. columna K79
         |--B. compressus K79
         |--B. crickmayi K79
         |--B. cuneatus K79
         |--B. eliasi K79
         |--B. gilberti K79
         |--B. grandis K79
         |--B. gregoryensis K79
         |--B. inornatus K79
         |--B. jenseni K79
         |--B. kirki K79
         |--B. lomaensis K79
         |--B. maclearni K79
         |--B. obtusus K79
         |--B. occidentalis K79
         |--B. ovatus W77
         |--B. perplexus K79
         |--B. pseudovatus K79
         |--B. rectus St98
         |--B. reesidei K79
         |--*Rugaptychus’ rugosus (Sharpe 1857) Sp98
         |--B. rex K79
         |--B. schenki K79
         |--B. scotti K79
         |--B. sulcatus M08
         |--B. undatus K79
         |--B. vertebralis K79
         `--B. yokoyamai K79

Nomen nudum: Baculites sheringomensis Crick 1924 KM08

Eubaculites carinatus (Morton 1834) KM08 [incl. Baculites vagina var. ootacodensis KM08, E. ootacodensis K79, B. vagina var. simplex KM08]

*Type species of generic name indicated


[EK02] Engeser, T., & H. Keupp. 2002. Phylogeny of the aptychi-possessing Neoammonoidea (Aptychophora nov., Cephalopoda). Lethaia 35: 79–96.

[K79] Kauffman, E. G. 1979. Cretaceous. In: Robison, R. A., & C. Teichert (eds) Treatise on Invertebrate Paleontology pt A. Introduction. Fossilisation (Taphonomy), Biogeography and Biostratigraphy pp. A418–A487. The Geological Society of America, Inc.: Boulder (Colorado), and The University of Kansas: Lawrence (Kansas).

[KM08] Klinger, H. C., & N. Malchus. 2008. The first record of Agerostrea ungulata (von Schlotheim, 1813) (Bivalvia: Ostreoidea) from the Upper Maastrichtian of KwaZulu, South Africa, with a discussion of its distribution in southeast Africa and Madagascar. African Natural History 4: 11–16.

[M08] McMillan, I. K. 2008. Reappraisal of foraminiferal assemblages of the Santonia-Campanian Mzamba Formation type section, and their correlation with the stratigraphic succession of the KwaZulu Basin. African Natural History 4: 25–34.

[OZ89] Olivero, E. B., & W. J. Zinsmeister. 1989. Large heteromorph ammonites from the Upper Cretaceous of Seymour Island, Antarctica. Journal of Paleontology 63 (5): 626–636.

[Sp98] Spaeth, C. 1998. Cretaceous cephalopods. Lethaia 31: 28.

[St98] Stilwell, J. D. 1998. Late Cretaceous Mollusca from the Chatham Islands, New Zealand. Alcheringa 22 (1): 29–85.

[W77] White, C. A. 1877. Report upon the invertebrate fossils collected in portions of Nevada, Utah, Colorado, New Mexico, and Arizona, by parties of the expeditions of 1871, 1872, 1873, and 1874. U.S. Geographical Surveys West of the One Hundredth Meridian 4 (1): 1–219, pls 1–21.

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