Data from: Evolutionary–phylogenetic pathway of the Cretaceous ammonite genus Aegocrioceras and its relationship to Juddiceras spp. and Crioceratites spp.
Authors/Creators
- 1. Charles University
- 2. Ruhr University Bochum
- 3. Independent Sector
Description
The systematics of ammonoids are complicated by their large degree of intra-specific variation, which complicates a stable validation of species. Aegocrioceras is a heteromorph ammonite from the Lower Saxony Basin in the Hauterivian Boreal, and a prime example of a genus with an unstable internal systematic and external relationship to other ammonoids. Here, we use quantitative morphometrics on Aegocrioceras species from an assemblage collected in the clay pit Resse (north-west Germany) to evaluate the systematics and phylogeny of this Cretaceous genus. We simplify the systematic of the genus into the three entities A. bicarinatum [m]/A. semicinctum [M] complex (which potentially contains A. quadratum as well), A. raricostatum and A. spathi. The most likely phylogeny coincides very well with the stratigraphic record of the species and implies anagenetic adaptations in A. raricostatum and A. spathi after the origin of the species. Aegocrioceras most likely derived from warm-water adapted Tethyan Crioceratites species, and Boreal Crioceratites are potentially warm-water adapted descendants of the cold-water adapted Aegocrioceras but may alternatively represent renewed Tethyan invasions. Our data imply that Aegocrioceras' success against incumbent ammonites in the Boreal was rooted in abiotic change (Court Jester) processes due to its high adaptability, while selection within the Aegocrioceras clade was more likely based on biotic interaction (Red Queen) processes.
Notes
All these information are also included in README.txt to aid reusability of the data.
Weinkauf_2021_Aegocrioceras_AppendixS1.pdf
.pdf file
This file contains additional analytical results that are complementing the results presented in the manuscript.
- A description of the superimposition procedures and results illustrating the superimposition success.
- A depiction of the ARI40 data trajectories between species.
- The unrooted phylogenies.
- A metric multidimensional scaling to compare our consensus tree with the random trees.
- A comparison for different phylogenetic tree rootings.
- Phenotypic reconstructions of remaining conch character traits not presented in the manuscript.
Weinkauf_2021_Aegocrioceras_CollectionNumbers.xlsx
.xlsx file
This file contains the collection numbers of specimens used in this study in the Naturalis Biodiversity Centre in Leiden, The Netherlands and the Landesamt für Bergbau, Energie und Geologie (LBEG), Geozentrum Hanover, Germany.
Weinkauf_2021_Aegocrioceras_Morphology_Resse.csv
Comma-separated .txt file
This file contains extracted morphometric data of Aegocrioceras spp. from the clay pit Resse.
| Bed | Bed number |
| Specimen number | Specimen number within bed |
| Specimen name | Unique specimen name |
| Species | Species the specimen belongs to |
| Radial degrees | Radial degree of measurement along conch, corrected for superimposition |
| Diameter (mm) | Conch diameter dm (mm) |
| Whorl height (mm) | Conch whorl height wh (mm) |
| Whorl interspace (mm) | Conch whorl interspace wi (mm) |
| Umbilical width (mm) | Conch umbilical width uw (mm) |
| WER | Whorl expansion rate [dmi/(dmi−(whi+wii))]2 |
| WHER | Whorl height expansion rate (whi/whi+4)2 |
| RDW (n) | Ribs per demi-whorl (# ribs along 180 deg. segment toward juvenile) |
| ARI 40 (n) | ARI40 (# ribs within 40 mm circle) |
| ARI 20 (n) | ARI20 (# ribs within 20 mm circle) |
| UWI | Umbilical width index uwi/dmi |
| WII | Whorl-interspace index wii/whi |
Weinkauf_2021_Aegocrioceras_Morphology_TypeSpecimens.csv
Comma-separated .txt file
This file contains extracted morphometric data of the type specimen of Aegocrioceras densiradiatum, as depicted in Rawson (1975).
| Species | Species the specimen belongs to |
| Radial degrees | Radial degree of measurement along conch, corrected for superimposition |
| Diameter (mm) | Conch diameter dm (mm) |
| Whorl height (mm) | Conch whorl height wh (mm) |
| Whorl interspace (mm) | Conch whorl interspace wi (mm) |
| Umbilical width (mm) | Conch umbilical width uw (mm) |
| WER | Whorl expansion rate [dmi/(dmi−(whi+wii))]2 |
| WHER | Whorl height expansion rate (whi/whi+4)2 |
| RDW (n) | Ribs per demi-whorl (# ribs along 180 deg. segment toward juvenile) |
| ARI 40 (n) | ARI40 (# ribs within 40 mm circle) |
| ARI 20 (n) | ARI20 (# ribs within 20 mm circle) |
| UWI | Umbilical width index uwi/dmi |
| WII | Whorl-interspace index wii/whi |
References
RAWSON, P. F. 1975. Lower Cretaceous ammonites from north-east England: The Hauterivian heteromorph Aegocrioceras. Bulletin of the British Museum (Natural History) – Geology, 26 (4), 129–159.
Weinkauf_2021_Aegocrioceras_Morphology_Outgroup.csv
Comma-separated .txt file
This file contains extracted morphometric data of ammonoid from literature images to serve as outgroups.
| Publication | Publication from which the image was taken |
| Specimen name | Unique specimen name |
| Species | Species the specimen belongs to |
| Radial degrees | Radial degree of measurement along conch, corrected for superimposition |
| Diameter (mm) | Conch diameter dm (mm) |
| Whorl height (mm) | Conch whorl height wh (mm) |
| Whorl interspace (mm) | Conch whorl interspace wi (mm) |
| Umbilical width (mm) | Conch umbilical width uw (mm) |
| WER | Whorl expansion rate [dmi/(dmi−(whi+wii))]2 |
| WHER | Whorl height expansion rate (whi/whi+4)2 |
| RDW (n) | Ribs per demi-whorl (# ribs along 180 deg. segment toward juvenile) |
| ARI 40 (n) | ARI40 (# ribs within 40 mm circle) |
| ARI 20 (n) | ARI20 (# ribs within 20 mm circle) |
| UWI | Umbilical width index uwi/dmi |
| WII | Whorl-interspace index wii/whi |
References
KEMPER, E. and VAN DER BURGH, J. 1992. Die tiefe Unterkreide im Vechte–Dinkel-Gebiet (westliches Niedersächsisches Becken), mit einem paläobotanischen Beitrag von J. van der Burgh. Losser, Stichting het Staringmonument, 95 pp.
KEMPER, E. and WIEDENROTH, K. 1987. Klima und Tier-Migrationen am Beispiel der frühkretazischen Ammoniten Nordwestdeutschlands. 315–363. In KEMPER, E. and BATTEN, D. J. (eds). Das Klima der Kreidezeit – Mit Beiträgen zur Klima-Analyse der Kreide. Geologisches Jahrbuch Reihe A, Vol. 96. Schweizerbart Science Publishers, Stuttgart, 399 pp.
MUTTERLOSE, J. and WIEDENROTH, K. 2009. Neue Tagesaufschlüsse der Unter-Kreide (Hauterive–Unter-Apt) im Großraum Hannover–Braunschweig: Stratigraphie und Faunenführung. Berliner paläobiologische Abhandlungen, 10, 257–288.
Weinkauf_2021_Aegocrioceras_Morphology_Mutterlose.csv
Comma-separated .txt file
This file contains extracted morphometric data of two misidentified Aegocrioceras-species from literature images.
| Publication | Publication from which the image was taken |
| Specimen name | Unique specimen name |
| Species | Species the specimen belongs to |
| Radial degrees | Radial degree of measurement along conch, corrected for superimposition |
| Diameter (mm) | Conch diameter dm (mm) |
| Whorl height (mm) | Conch whorl height wh (mm) |
| Whorl interspace (mm) | Conch whorl interspace wi (mm) |
| Umbilical width (mm) | Conch umbilical width uw (mm) |
| WER | Whorl expansion rate [dmi/(dmi−(whi+wii))]2 |
| WHER | Whorl height expansion rate (whi/whi+4)2 |
| RDW (n) | Ribs per demi-whorl (# ribs along 180 deg. segment toward juvenile) |
| ARI 40 (n) | ARI40 (# ribs within 40 mm circle) |
| ARI 20 (n) | ARI20 (# ribs within 20 mm circle) |
| UWI | Umbilical width index uwi/dmi |
| WII | Whorl-interspace index wii/whi |
References
MUTTERLOSE, J. and WIEDENROTH, K. 2009. Neue Tagesaufschlüsse der Unter-Kreide (Hauterive–Unter-Apt) im Großraum Hannover–Braunschweig: Stratigraphie und Faunenführung. Berliner paläobiologische Abhandlungen, 10, 257–288.
Weinkauf_2021_Aegocrioceras_SimpleTree.tree
Phylogenetic tree in Newick format
This file contains our phylogenetic tree (unrooted) of Aegocrioceras and related species. It is based on the simple mean morphology of Aegocrioceras specimens and was calculated using the FastME algorithm (Desper & Gascuel 2002).
References
DESPER, R. and GASCUEL, O. 2002. Fast and accurate phylogeny reconstruction algorithms based on the minimum-evolution principle. 357–374. In GUIGÓ, R. and GUSFIELD, D. (eds). Algorithms in Bioinformatics: Second International Workshop, WABI 2002 Rome, Italy, September 17–21, 2002 Proceedings. Lecture Notes in Computer Science, Vol. 2452. Springer-Verlag, Berlin, Heidelberg, 554 pp.
Weinkauf_2021_Aegocrioceras_ConsensusTree.tree
Phylogenetic tree in Newick format
This file contains our phylogenetic tree (unrooted) of Aegocrioceras and related species. It is a consensus tree from 999 random trees (calculated using the FastME algorithm, Desper & Gascuel 2002) where the morphology within each Aegocrioceras-species was allowed to vary around the mean morphology following a Gaussian distribution, with the standard deviation estimated from the data. The consensus tree was calculated based on the Robinson-Foulds distance (Robinson & Foulds 1981), and the base tree (Weinkauf_2021_Aegocrioceras_SimpleTree.tree) was used as the starting point.
References
DESPER, R. and GASCUEL, O. 2002. Fast and accurate phylogeny reconstruction algorithms based on the minimum-evolution principle. 357–374. In GUIGÓ, R. and GUSFIELD, D. (eds). Algorithms in Bioinformatics: Second International Workshop, WABI 2002 Rome, Italy, September 17–21, 2002 Proceedings. Lecture Notes in Computer Science, Vol. 2452. Springer-Verlag, Berlin, Heidelberg, 554 pp.
ROBINSON, D. F. and FOULDS, L. R. 1981. Comparison of phylogenetic trees. Mathematical Biosciences, 53 (1–2), 131–147.
Weinkauf_2021_Aegocrioceras_Rawson1975Tree.tree
Phylogenetic tree in Newick format
This file contains a phylogenetic tree (unrooted) of Aegocrioceras created by Rawson (1975) based on the stratigraphic distribution of species in the Speeton clays (UK).
References
RAWSON, P. F. 1975. Lower Cretaceous ammonites from north-east England: The Hauterivian heteromorph Aegocrioceras. Bulletin of the British Museum (Natural History) – Geology, 26 (4), 129–159.
Funding provided by: PRIMUS Research Fellowship*
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Award Number: PRIMUS/20/SCI/019
Funding provided by: PROGRES Q45*
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Funding provided by: Deutsche Forschungsgemeinschaft
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001659
Award Number: HO- 4674/7-1
Funding provided by: PRIMUS Research Fellowship
Crossref Funder Registry ID:
Award Number: PRIMUS/20/SCI/019
Funding provided by: PROGRES Q45
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Weinkauf_2021_Aegocrioceras_AppendixS1.pdf
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- Is derived from
- 10.5061/dryad.83bk3j9r1 (DOI)