I don’t know of any fossils with crossbills in them, but there are certainly ones with birds in them. In fact the most important and famous fossil ever found – archaeopteryx – is an ancestor of all the birds. Soooo cool.
Fossil starfish have been found, yes. But starfish skeletons sometimes fall apart when they die so only under special circumstances are nice intact fossils of starfish formed.
Here is a link to the webpage of Dr Imran Rahman who is an expert on echinoderm fossils and is one of the team championing the common starfish:
Another member of the common starfish team is Dr Tim Ewin, who is the curator of the echinoderm fossil collection at the Natural History Museum in London:
Thus far, no fossils have been found for the abyssal grenadier or its genus – Corphaenoides. There are fossils of fish starting the late Cambrian or about 500 million years ago. We do think that many of fish species, including the abyssal grenadier, found in the deep seas originated in freshwater and shallow seas about 100 million years ago. The deep sea was then colonized by these shallow and freshwater species about 66 million years, just after the extinction of dinosaurs. This explosion of diversity into the deep sea happened about the same time as the explosion of diversity with mammals and birds.
Comments
Baltic clam commented on :
clams often have very good fossil records, as the shells can preserve well. it depends on where they live. The best fossils are in muddy environments
Common starfish commented on :
Fossil starfish have been found, yes. But starfish skeletons sometimes fall apart when they die so only under special circumstances are nice intact fossils of starfish formed.
Here is a link to the webpage of Dr Imran Rahman who is an expert on echinoderm fossils and is one of the team championing the common starfish:
http://www.oum.ox.ac.uk/research/imran_rahman.htm
Another member of the common starfish team is Dr Tim Ewin, who is the curator of the echinoderm fossil collection at the Natural History Museum in London:
http://www.nhm.ac.uk/our-science/departments-and-staff/staff-directory/tim-ewin.html
If you have any specific questions about fossil echinoderms – Imran and Tim will be able to answer them.
Abyssal Grenadier commented on :
Thus far, no fossils have been found for the abyssal grenadier or its genus – Corphaenoides. There are fossils of fish starting the late Cambrian or about 500 million years ago. We do think that many of fish species, including the abyssal grenadier, found in the deep seas originated in freshwater and shallow seas about 100 million years ago. The deep sea was then colonized by these shallow and freshwater species about 66 million years, just after the extinction of dinosaurs. This explosion of diversity into the deep sea happened about the same time as the explosion of diversity with mammals and birds.