Data from: Intraspecific variability through ontogeny in early ammonoids

 

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Title Supplementary Appendix
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Description Further explanations concerning the localities and taxonomy used in this paper. It also contains the additional references cited in the supplementary material, but not in the main text.
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Title Supplementary Figure 1
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Description A, The study area (enlarged in B) is marked by the rectangle (modified from Klug 2001). B, Geological map showing the early Emsian localities of the eastern Moroccan Anti-Atlas (modified from Klug 2001). Studied specimens derive from the localities marked by a black dot. C, Paleogeographic reconstruction of the Emsian (modified from Scotese 2001) showing known occurrences of Anetoceras, Erbenoceras and other early Emsian ammonoid faunas discussed in the text and the supplementary appendix. References not listed in the main text can be found in the supplementary appendix.
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Title Supplementary Figure 2
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Description Bivariate plots of whorl interspace index WII (A) and whorl expansion rate WER (B) of Group I (black fillings, white lines) and Group II (white fillings, black lines) against diameter. Note the similarity between the graph of WER and whorl height index WHI of Figure 3A. Multiple measurements of the same specimen through ontogeny are connected by a line.
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Title Supplementary Figure 3
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Description Specimens of Group I (“Anetoceras”) and Group II (“Erbenoceras”) arranged according to umbilical width index UWI (A-R) and according to rib per demi-whorl counts (S-AJ) at 70 mm diameter. Note that some of the specimens were mirrored to enhance comparability. All specimens were coated with NH4Cl. All parts exceeding 70 were cut off in the image processing software. Group I has a grey background and Group II has a white background. A, PIMUZ-29653. B, PIMUZ-29656. C, PIMUZ-29637. D, PIMUZ-29652. E, PIMUZ-29643. F, PIMUZ-28430. G, PIMUZ-29636. H, PIMUZ-29792. I, PIMUZ-29789 J, PIMUZ-29783. K, PIMUZ-29806. L, PIMUZ-29797. M, PIMUZ-29779. N, GPIT-1849-2002. O, PIMUZ-29810. P, PIMUZ-29802. Q, PIMUZ-29805. R, PIMUZ-29815. S, PIMUZ-29637. T, PIMUZ-29656. U, PIMUZ-29653. V, PIMUZ-29643. W, PIMUZ-29652. X, PIMUZ-29806. Y, GPIT-1849-2002. Z, PIMUZ-29810. AA, PIMUZ-29797. AB, PIMUZ-29636. AC, PIMUZ-28430. AD, PIMUZ-29779. AE, PIMUZ-29792. AF, PIMUZ-29802. AG, PIMUZ-29789 AH, PIMUZ-29783. AI, PIMUZ-29805. AJ, PIMUZ-29815.
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Title Supplementary Figure 4
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Description Histograms showing (A) the distribution of maximum size (maximum dm) and associated distributions of (B) whorl height index WHI, (C) umbilical width index UWI, (D) whorl interspace index WII, and (E) ribs per half-whorl RDW for all specimens of Group II (“Erbenoceras”). The two peaks at the 70-75 mm bin (falls in the 1.7-1.8 logarithmic size class) and the 90-95 mm bin (falls in the 1.9-2.0 logarithmic size class) are highlighted in black and grey respectively. Note, that there is no clear separation in frequency distribution of the conch or rib spacing parameters at these diameters, which are highlighted in the same colors. The bimodal distribution of the whorl height index WHI probably results from a sampling bias as this peak disappears when all measurements through ontogeny of more complete specimens are also plotted.
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Title Supplementary Table 1
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Description Measurements of the Moroccan specimens. Abbreviations localities: AE = Achguig East, BT = Bou Tchrafine, EK = El Kahla, GEA = Gart El Anz, GM = Gara Mdouara, HT = Hassi Tachbit, OCE = Ouidane Chebbi East, QCE = Qued Chebbi East. Abbreviations collectors: DB = Kenneth De Baets, H = Marcus Hebeisen, K = Christian Klug, Ko = Christian Kolb, T = Frank Trostheide, W = Martin Wasmer. Abbreviations levels: C = Unit C of Klug (2001), D = Unit D of Klug (2001). All specimens deriving from a single slab of Unit D (see supplementary appendix) are marked in bold. Additional references cited in the supplementary material, but not in the main text are listed in the supplementary appendix.
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Title Supplementary Table 2
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Description Measurements of the specimens from the literature (Erben 1960, 1962; Bogoslovsky 1969; Ruan 1981; Yatskov 1990; Chlupáč and Turek 1983; De Baets et al. 2009). Abbreviations: HT = holotype, LT = lectotype. Additional references cited in the supplementary material, but not in the main text are listed in the supplementary appendix.
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When using this data, please cite the original publication:

De Baets K, Klug C, Monnet C (2013) Intraspecific variability through ontogeny in early ammonoids. Paleobiology 39(1): 75-94. http://dx.doi.org/10.1666/0094-8373-39.1.75

Additionally, please cite the Dryad data package:

De Baets K, Klug C, Monnet C (2013) Data from: Intraspecific variability through ontogeny in early ammonoids. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.k9b14
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