Trigoides fossil map
Where fossils of Trigoides have been found, shown on the Earth as it looked about 525 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 525 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Ediacaran & Cambrian life |
|---|---|
| Lived | 521–514.5 million years ago (Stage 3) |
| Periods | Cambrian |
| Named by | Luo et al. 1999 |
| Fossil records | 2 occurrences at 2 locations (PBDB) |
| Found in | China |
| Rock formations | Yuanshan, Heilinpu |
About Trigoides
Trigoides aclis is an extinct species of comb jelly. The genus Trigoides is known from fossils from the Chengjiang Lagerstätte. It is proposed to be a type of ctenophore. A phylogenetic study of Cambrian stem-group ctenophores recovered Trigoides in Scleroctenophora, along with Galeactena, Maotianoascus, Thaumactena, Batofasciculus and Gemmactena.
Text in “About” is quoted from the Wikipedia article Trigoides (revision 1331356886), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q7841764.
