Keyphrases
Antarctic Peninsula
7%
Antarctica
10%
Asteriidae
7%
Asteroidea
55%
Asteroids
88%
Asterozoa
8%
Asterozoans
9%
Class Level
5%
Crinoids
7%
Crown Group
16%
Early Ordovician
8%
Echinodermata
100%
Echinoderms
11%
Fossil Record
5%
Goniasteridae
7%
Late Cretaceous
7%
Late Ordovician
6%
Ophiuroids
15%
Ordovician
16%
Ossicles
23%
Phylogeny
11%
Sea Star
11%
Seymour Island
7%
Shallow Water
6%
Skeletal Elements
5%
Texas
7%
Upper Cretaceous
5%
Valvatida
7%
Agricultural and Biological Sciences
Asteriidae
9%
Asteroidea
36%
Cladistics
20%
Crown Group
8%
Echinodermata
59%
Evolution
5%
Lineages
5%
New Genus
21%
New Species
22%
Paxillosida
6%
Somasteroidea
7%
Valvatida
6%
Earth and Planetary Sciences
Antarctic Region
5%
Early Ordovician
8%
Eocene
9%
Fossil
29%
Fossil Record
6%
Late Cretaceous
7%
Morphology
15%
New Genus
30%
New Species
32%
Ordovician
18%
Phylogenetics
16%
Shallow Water
6%
Silurian
6%
Texas
7%
Upper Cretaceous
5%