https://doi.org/10.5061/dryad.ffbg79cz6

GENERAL INFORMATION

1. Title of Dataset: Supplements for: Review and revision of the Olivoidea (Neogastropoda) from the Paleocene and Eocene of the U.S. Gulf Coast Plain.

2. Author Information

Corresponding Investigator

Name: Dr. Warren Allmon

Institution: Paleontological Research Institution, Ithaca, New York; Cornell University, Ithaca, New York

Email: wda1@cornell.edu

Co-investigator 1

Name: Dr. Dana Friend

Institution: Paleontological Research Institution, Ithaca, New York

3. Date of data collection: 2019-2021

4. Geographic location of data collection: U.S. Gulf Coastal Plain

5. Funding sources that supported the collection of the data: National Science Foundation

6. Recommended citation for this dataset: Allmon, W.D. & Friend, D.S. (2022), Supplements from: Review and revision of the Olivoidea (Neogastropoda) from the Paleocene

and Eocene of the U.S. Gulf Coastal Plain, Dryad, Dataset

DATA & FILE OVERVIEW

1. Description of dataset

These data were generated to investigate the evolutionary relationships of olivoid gastropods living in the Paleocene and Eocene of the U.S. Gulf Coastal Plain. Nineteen species, representing three genera of Olividae and seven of Ancillaridae, were included along with Recent species Agaronia testacea (Lamarck, 1811) and Oliva sericea (Roding, 1798). Calipers were used to measure and code these specimens for 27 discrete characters: 10 binary, and 17 multistate. Character suites were coded to capture variation among (1) suture; (2) callus; (3) bands (including the olivoid, anterior, subsutural, and body whorl bands); (4) columella and plications; (5) ornamentation and texture; and (6) shell shape. Eoancilla was designated as the outgroup because the genus is a putative ancestor of the other ancillariids.

2. File List:

File 1 Name: Supplement 1.docx

File 1 Description: Nexus files used in phylogenetic analysis

File 2 Name: Supplement 2 morphometric data.xlsx

File 2 Description: Caliper measurements of specimens

METHODOLOGICAL INFORMATION

Our preliminary phylogenetic analysis included nineteen Paleocene-Eocene species representing three genera of Olividae and seven genera of Ancillariidae. We also included the Recent species Agaronia testacea (Lamarck, 1811) and Oliva sericea (Röding, 1798) for comparison. We used type and figured material to code each species for the following discrete character suites: (1) suture; (2) callus; (3) bands (including the olivoid, anterior, subsutural, and body whorl bands); (4) columella and plications; (5) ornamentation and texture; and (6) shell shape. In instances where museum specimens were unavailable, taxa were coded using primary taxonomic figures and literature. Species were coded for 27 discrete characters, 10 binary, and 17 multistate (Table 2), that were selected to capture morphological variation among the clades and are inferred to represent homologous structures among sampled taxa. Eoancilla was designated as the outgroup because the genus is a putative ancestor of the other ancillariids (Garvie, 2013).

A parsimony analysis was conducted in PAUP* v. 4.0a147 (Swofford, 2003) using a heuristic search with 10,000 random addition sequences. TBR (tree bisection reconnection) was used for the branch-swapping algorithm with no reconnection limit, and collapsing all branches with a maximum branch length of zero. All characters were left unordered and equally weighted. Nexus files utilized are provided as Supplement 1. Values for the consistency index (CI) and retention index (RI) were recorded for the recovered trees, and bootstrap values and Bremer support were calculated using PAUP*.

DATA-SPECIFIC INFORMATION FOR: Supplement 1.docx

1. Dimensions of data matrix for phylogenetic analysis:

# taxa: 21

# characters: 27

Character codes: 01234

missing: ?

2. Details of Phylogenetic analysis:

Weighting: all characters have equal weight

Ordering: all characters are unordered

Analysis type: Parsimony

Program: PAUP* v. 4.0a147

Search Parameters: heuristic search with 10,000 random addition sequences. Tree bisection reconnection used for the branch-swapping algorithm with no connection limit

-All branches collapsed with a branch length of zero.

DATA-SPECIFIC INFORMATION FOR: Supplement 2 morphometric data.xlsx

1. Number of variables: 12

2. Number of rows: 230

3. Variable List:

Location: Locality where specimen was collected

Case #: Number of shell out of total analyzed in study

Var1: Measurement (1) as indicated on text-fig 11, "Maximum height"

Var2: Measurement (2) as indicated on text-fig 11, "Maximum width in apertural view"

Var3: Measurement (3) as indicated on text-fig 11, "Width at posterior end of aperture"

Var4: Measurement (4) as indicated on text-fig 11, "Aperture length"

Var5: Measurement (5) as indicated on text-fig 11, "Height from posterior-most point of parietal callus"

Var6: Measurement (6) as indicated on text-fig 11, "Maximum height minus aperture length"

Var7: Measurement (7) as indicated on text-fig 11, "Maximum width of callus on ventral side"

Var8: Measurement (8) as indicated on text-fig 11, "Maximum width of aperture"

Var9: Measurement (9) as indicated on text-fig 11, "Width of anterior canal"

Var10: Measurement (10) as indicated on text-fig 11, "Maximum width from left side"

4. Missing data codes:

***: Unknown/ not available to be measured for specified shell.

5. Other relevant information:

Measurements taken on specimens using electronic calipers.