Table 1 Comparison of Stillatuberoolithus storrsi, oogen. et oosp. nov. to similar ootaxa. Brackets indicate eggshell thicknesses including ornamentation.

From: Tiny, ornamented eggs and eggshell from the Upper Cretaceous of Utah represent a new ootaxon with theropod affinities

Ootaxon

Age

Formation

Location

Eggshell thickness (mm)

ML:CL

Ornamentation

Reference

Stillatuberoolithus storrsi, oogen. et oosp. nov

Campanian

Kaiparowits

Utah

0.31–0.4 [0.37–0.59]

1:1.1–1:1.5

Dispersituberculate with flat nodes

This paper; Holotype

Laevisoolithidae (diagnosis)

   

0.3–0.6

2:1–1:1

Smooth

22

Subtiliolithus kachchhensis

Maastrichtian

Lameta

India

[0.35–0.5]

1:1–1:2

Dispersituberculate

19,23

Subtiliolithus kachchhensis (revised)

Maastrichtian

Lameta

India

0.467–0.491

1:1–1:2

Dispersituberculate

27

Subtiliolithus microtuberculatus

Maastrichtian

Nemegt

Mongolia

0.3–0.4

3:1–2:1

Very fine tubercles

21

Subtiliollithus hyogoensis

Albian

Ohyamashimo

Japan

0.22–0.41

1:0.9–1:1.3

Dispersituberculate

25

Laevisoolithus sochavai

Campanian–Maastrichtian

Djadokhta & Nemegt

Mongolia

< 1.0

2:1–1:1

Smooth

21

Tipoolithus achloujensis

Maastrichtian

Irbzer

Morocco

0.4–0.65

1:1–1:2

Dispersituberculate

24

Laevisoolithidae

Maastrichtian

 

France

0.25–0.37

1:2.5–1:3

Smooth

26

Porituberoolithus warnerensis

Campanian

Kaiparowits

Utah

0.51–0.68 [0.57–0.91]

1:2

Dispersituberculate

4

P. warnerensis

Campanian

Oldman

Alberta

0.5–0.65

1:2

Dispersituberculate

28; Holotype

P. warnerensis

Campanian

Dinosaur Park & Oldman

Alberta

  

Disperistuberculate & Flat nodes

29

P. warnerensis

Maastrichtian

Willow Creek

Alberta

0.45–0.78 [0.72–1.12]

1:1–1:2

Disperistuberculate & Flat nodes

30

P. warnerensis cf

Santonian

Milk river

Alberta

0.37 [0.71]

  

31

Porituberoolithus sp.

Campanian

Fruitland

New Mexico

0.31–0.72

1:2

Disperistuberculate & Flat nodes

18

cf. Porituberoolithus

Campanian

Aguja

Texas

[0.57–0.73]

1:2

Flat nodes

32

Pseudogeckoolithus nodosus

Maastrichtian

Tremp

Spain

0.3–0.35

1:7–1:9

Dispersituberculate

33

Pseudogeckoolithus cf. nodosus

Maastrichtian

Densus-Ciula

Arén

Romania

Spain

0.28 [0.35]

1:3–1:9

Dispersituberculate

34

Pseudogeckoolithus aff. tirboulensis

Santonian

Campanian

Maastrichtian

Csehbánya

Sebes

Pui beds

Hungary

Romania

0.13–0.22 [0.2–0.25]

1:1–1:6

Dispersituberculate

34

Dimorphoolithus bennetti

Maastrichtian

Hell Creek

Montana

[0.561–0.850]

1:2.5

Bimodal dispersituberculate

35

Anguimorph

Early Cretaceous

 

Thailand

[0.446–0.537]

n/a

Dispersituberculate

36,37

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