Random triples
| Subject | Object |
|---|---|
| gptkb:Murex_(sea_snail) | tubercles |
| gptkb:Placenticeras | smooth |
| gptkb:Graphoceratidae | ribbed |
| gptkb:Hildoceras | ribbed |
| gptkb:Dumortieria | ribbed |
| gptkb:Acanthoceras | tuberculate |
| gptkb:Mortoniceras | tuberculate |
| gptkb:Oxynoticeratidae | smooth or weakly ribbed |
| gptkb:Kosmoceratidae | ribbed |
| gptkb:Leptaena | radiating ribs |
| gptkb:Hildoceras_bifrons | ribbed |
| gptkb:Placenticeras | weakly ribbed |
| gptkb:Aspidoceras | ribbed |
| gptkb:Leptaena | growth lines |
| gptkb:Aspidoceras | tuberculate |
| gptkb:Lytoceras | smooth |
| gptkb:Murex_(sea_snail) | lamellae |
| gptkb:Paracymatoceras | ribbed |
| gptkb:Acanthoceras | ribbed |
| gptkb:Cleoniceras | ribbed |