Halla Beds Formation
107 distinct taxa, from 146 fossil occurrences the Paleobiology Database records under this name, spanning 431–427 Mya.
Gotland · SE
107 taxa · 146 fossils · 431–427 MyaLoading coastlines…
2 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Kettnerites
- Atrypa reticularis
- Eospirifer radiatus
- Gypidula galeata
- Rhynchotreta cuneata
- Acervularia
- Anthozoa
- Bryozoa
- Calymene
- Conchicolites
- Cornulites
- Crinoidea
- Delthyris (Delthyris) elevata
- Fenestella
- Halysites catenularius
- Heliolites
- Howellella elegans
- Kozlowskiellina deltidialis
- Labechia conferta
- Leptaena rhomboidalis
- Leptaenoidea rugata
- Nuculoidea
- Ostracoda
- Platystrophia biforatus
- Podolites
- Proetus
- Ptilodictya lanceolata
- Resserella
- Stegerhynchus borealis
- Alastega lira
- Algae
- Ancillotoechia bidentata
- Arctinurus
- Arctoplax ornata
- Aulopora
- Brachiopoda
- Bumastus
- Caesariella lindensis
- Camarotoechia
- Chelodes actinis
The 40 most often recorded, of 107.
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.