Lagerstätten Flashcards
It is a rock formation with wonderful preservation.
From the German language meaning “Mother Lode”.
Lagerstatten
These are fossils sites from which exception fossils come, with many fossils exhibiting extraordinary quality and completeness of preservation and/or a wide diversity of fauna and/or flora.
Lagerstatten
Two types of Lagerstatten.
Konzentrat-Lagerstatten and Konservat-Lagerstatten
Anomolously high amounts of fossil material.
Possibly by decreased rate of sedimentation.
Possibly by increased rate of organism reproduction (“bloom”).
Possibly by increased rate of organismal death.
Konzentrat-Lagerstatten
— Major categories:
Konzentrat-Lagerstatten
Unusually well-preserved fossils.
Often requires anoxic bottom conditions (so no
scavenging), quiet water (so bodies are not disturbed), rapid burial (to reduce possibility of mechanical destruction of material)
Sometimes preserves not only hard parts, but
impressions and/or carbonizations of soft parts; possibly even mineralized soft.
Konservat-Lagerstatten
The most common genus of fish found in the Green River Formation.
Knightia Eocaena
The _______ _______ is a fossil-bearing deposit exposed in the Canadian Rockies of British Columbia, Canada.
Burgess Shale
is a ~20 cm Enatiornithine Bird preserved in ventral view on a single slab.
Sulcavis Geeorum
Are small, fossilized remains of organisms (animal, plant, or protozoa) that require magnification for study. They usually derive from the hard parts of organisms (skeletons, shells, jaws, teeth, seed coverings, etc). ___________ may be imbedded in rock or exist as loose particles within soft substrate.
Microfossils
What can be the size of the smallest microfossils?
0.001 mm or 1 micron
What can be the size of the largest microfossils?
1-2 mm
Fossils that are greater than 2 mm in size.
Macrofossils
Are tiny teeth-like apparatuses belonging to an extinct, worm-like, marine organism. They first appeared in the fossil record as far back as the Precambrian, but did not diversity fully until the Cambrian.
They lived in a wide range of habitats, and can be found in most marine rocks. The organisms were most diverse during the Ordovician and Devonian, and were wiped out during the Triassic- Jurassic mass extinction.
Conodonts
Multi-chambered shell.
Foraminifera
Oogonia
Charophyte Algae
Spicules
Sponge
Branching or fenestrate exoskeletal tubes.
Bryozoa
Coiled shell
Snail
Long, Conical Shell
Tentaculite
Jaws
Polychaete
Bivalve Carapace
Ostracod
Articulating, Bivalved Shells
Brachiopod
Articulating, internal skeletal ossicles
Crinoid
Jaw Apparatus
Conodont Animal
Tests
Radiolarians
What are the Konzentrat-Lagerstatten locations?
- Mongolia’s Gobi Desert
- Zhucheng, China
- Doehle Pool, Germany
What are the Konservat-Lagerstatten locations?
- Solhofen, Bavaria, Germany
- Mason Creek Lagerstätte, lilinois, USA
- Green River Formation
- Burgess Shale in the Canadian Rockies of British Columbia, Canada
- Hunsrück Schiefer, Rhineland, Germany
- Holzmaden Deep Water Shale, Swabia, Germany
- Yixian and Jiufotang Formations in China
What are the numerous amount of fossils and how many are found in Mongolia’s Gobi Desert?
15 Infant Protoceratops
Concentrated amount of this fossil species are found in Zhucheng, China.
Sapeornis
Two species in which concentrated amounts of their fossils are found in Doehle, Pool in Germany.
Pantelosaurus and Saxonicus
Age of Konservat-Lagerstatten in Solhofen, Bavaria, Germany.
Late Jurassic
Age of Konservat-Lagerstatten in Mason Creek, Lagerstatte, Illinois, USA
Carboniferous — Pennsylvanian
Age of Konservat-Lagerstatten in Green River Formation.
Eocene Age
Age of Konservat-Lagerstatten in Burgess Shale in the Canadian Rockies of british Columbia, Canada.
Middle Cambrian
Age of Konservat-Lagerstatten in Hunsruck Scheifer, Rhineland, Germany
Early Devonian
Age of Konservat-Lagerstatten in Holzmaden Deep Water Shale, Swabia, Germany
Lower Jurassic
Age of Konservat-Lagerstatten in Yixian and Jiufotang Formations in China.
Early Cretaceous
The third specimen found in Solhofen Limestone and the most spectacular specimen found to date due to its very fine feather impressions
Archaeopteryx
A Cambrian-aged fossil from the Burgess Shale
Hallucigenia
The specimen abundant in Holzmaden Deep Water Shale, Germany
Ichtyosaurs
A famous fossil of a horseshoe crab with its wandering trace it left before dying
Death March
A famous fossil containing multiple well-preserved baby and one Subadult Psittacosaurus that were buried alive by an ancient volcanic debris flow
Babysitter Bone Bed
Fossil specimen found in Jianshangou Bed of the Yixian Formayion in West Laioning Province, China
Confuciusornis Sanctus
