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| Kakabadze, M.V.; Hoedemaeker, P.J.. |
| Thirty seven species and subspecies of ammonites of the families Ancyloceratidae Gill, 1871, and Heteroceratidae Spath, 1922, are described. The following new taxa are described; Crioceratites (Paracrioceras) leyvaensis, C. (P.) royogomezi, C. (P.) cabreraensis, Pedioceras multicostatum, Pseudocrioceras guanense, Kutatissites creutzbergi, K. densecostatus compactus, K. etayosernai, K. grandis, K.? galanensis, Ammonitoceras galanense, A. giganteum, Hamiticeras ventrotuberculatum, H. longum, Hemihoplites (Matheronites) ridzewskyi sachicaensis, Colchidites riosuarezi, C. pseudovulanensis, C. guanensis and C. striatosulcatus. Moreover, one new genus, Laqueoceras gen. nov., with the type species L. laqueus sp. nov., is proposed. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Heteromorphic ammonites; Barremian; Aptian; Colombia; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214458 |
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| Sharikadze, M.Z.; Kakabadze, M.V.; Hoedemaeker, P.J.. |
| Seventy nine species and subspecies of the following ammonite genera and subgenera of the families Douvilleiceratidae Parona & Bonarelli, Acanthohoplitidae Stoyanow, and Parahoplitidae Spath are described from the study area. Fourteen species are new; Cheloniceras rectangulatum, Ch. guanense, Epicheloniceras wiedmanni, E. douvillei, E. bradleyiformis, Vectisites (Zambranoites) nodosus, V. (Z.) etayosernai, V. (Z.) obscurus, V. (Z.) grandis, Gargasiceras subpulcher, Colombiceras formosum, Protacanthoplites originalis, Riedelites latecostatus, R. microtuberculatus. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ammonites; Systematics; Aptian; Albian; Colombia; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214460 |
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| Kakabadze, M.V.; Hoedemaeker, P.J.; Bogdanova, T.N.; Sharikadze, M.Z.. |
| On the basis of new and published palaeontological and stratigraphical data, the qualitative and quantitative variations in the Barremian-early Albian ammonite fauna of Colombia have been documented and analyzed. The position adopted here is that in the early Barremian the Andean Province became replaced by the Caribbean Subprovince in Colombia. The Caribbean Subprovince became separated as an independent unit from the Andean Province on the generic level (Buergliceras, Pedioceras), but especially on the species level. In the middle/upper Aptian many new endemic genera and subgenera appeared; Juandurhamiceras, Neodeshayesites, Laqueoceras, Zambranoites, Riedelites and Pseudoptychoceras. Besides, many endemic middle Aptian species of other, non-endemic... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Palaeobiogeography; Early Cretaceous; Ammonites; Colombia; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214461 |
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| Kakabadze, M.V.; Hoedemaeker, Ph.J.. |
| Twenty-two species (among which six new ones) of the following Early Cretaceous ammonite genera are described: Crioceratites (C. leivaensis sp. nov.), Pedioceras (P. asymmetricum sp. nov.), Paracrioceras, Hamulinites, Karsteniceras (K. multicostatum sp. nov.), Hamiticeras (H. chipatai sp. nov.), Tonohamites, Ancyloceras, Pseudocrioceras, Pseudoaustraliceras, Ptychoceras, Colchidites, Protanisoceras [P. (P.) creutzbergi sp. nov.]. One new genus is proposed: Monsalveiceras gen. nov. (M. monsalvense sp. nov.). The Barremian and middle Aptian heteromorph assemblages show close affinities with synchronous assemblages of the Mediterranean Faunal Region. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/317530 |
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| Kakabadze, M.V.; Hoedemaeker, P.J.. |
| The stratigraphic ranges and systematics of heteromorphic ammonites from Lower Cretaceous (Hauterivian-Barremian) deposits in Lower Saxony, northern Germany, are revised. Nine genera and fortyseven species of the family Ancyloceratidae Gill, 1871, are described. One genus (Fissicostaticeras) and 20 species are new; Emericiceras ressense, E. sornayiforme, E. serpentinum, E. subtilicostatum, E. gotti, E. hannoverense, E. kemperi, Crioceratites hastensis, C. subisocostatus, C. vermiformis, Fissicostaticeras claviferum, F. aequicostatoides, F. rarocinctoides, Paracrioceras kleini, Acrioceras (Acrioceras) sarstedtense, A. (A.) crassicostatum, A. (A.) aegidii, A. (A.) longum, A. (A.) astrictum and Uhligia aegidii. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Heteromorphic ammonites; Systematics; Hauterivian; Barremian; Stratigraphy; Northern Germany; New taxa; 38.22. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/329769 |
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| Kakabadze, M.V.. |
| The variability in the dimensions of the shell, and some changes in suture line, sculpture, whorl section and mode of coiling in the late ontogenetic stages, have in some cases no taxonomic significance for the recognition of genera and higher taxa of Cretaceous heteromorph ammonites. In many cases, such phenomena are due to intraspecific variation or variation within a genus. The intrageneric variations of some Cretaceous heteromorphs are discussed in detail in the light of new, rich Colombian material. In relation to these problems in systematics, some questions on the systematics of the superfamily Ancyloceratoidea Gill are considered. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ammonites; Heteromorphs; Dimorphism; Systematics; Cretaceous; 38.22; 42.73. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/214457 |
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