﻿First population-level study of the ammonite genus Hildoglochiceras Spath, and the Lower Tithonian record of the Hildoglochiceras Horizon in the Kachchh Basin, India

Dhirendra Kumar Pandey; Franz T. Fürsich; Matthias Alberti; Ranajit Das; Federico Olóriz Sáez

doi:10.3897/zitteliana.96.73892

Research Article

Zitteliana 96: 1-49
https://doi.org/10.3897/zitteliana.96.73892 (02 Mar 2022)

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Article title
Abstract
Keywords
Introduction
Location, geological section, and environmental conditions
- Remarks on selected biostratigraphic interpretations of taramelliceratins and Hildoglochiceras, and their palaeoenvironmental and stratigraphic context in epicontinental shelves surrounding the Trans-Erythraean Trough, and the adjacent SE-Neotethyan palaeomargin
  - Taramelliceratins
  - SE-Neotethyan palaeomargin (Himalayas: Spiti, Nepal)
  - Selected data of the Indo-Malagasy margins
  - Selected data of the East African margin
- Hildoglochiceras
  - SE-Neotethyan palaeomargin (Himalayas: Spiti, Nepal)
  - Selected data of the Indo-Malagasy margins
  - Selected data of the East African margin
  - Reports from different areas in the Americas
- Ammonite-based correlations including Hildoglochiceras: Attempts of a global synthesis
- Abridged, updated interpretation of Hildoglochiceras biostratigraphy based on ammonite data
- Correlations based on microfossils
- A stratigraphic context for interpreting the biostratigraphic range of Hildoglochiceras
Taxonomy
- Methodology
  - Order Ammonoidea Zittel, 1884
  - Family Oppeliidae Bonarelli, 1894
  - Superfamily Perisphinctoidea Steinmann, 1890
- Statistical analysis of the specimens of Hildoglochiceras
- Data base
Results
- Hierarchical clustering analysis (HCA)
- Linear regression and likelihood ratio test (LRT)
Discussion of statistical analyses
- Hierarchical clustering analysis (HCA)
- Principal component analysis (PCA)
- Linear regression and likelihood ratio test (LRT)
Conclusions
Acknowledgements
References