Question

. Knightia fish specimens. Classify these animals. They were found in the Green River shale, and lived during the Eocene. Identify anatomical f animals that distinguish them from other kinds of fish that you can see on these specimens. There is also a specimen of Diplomystus, another Green River shale fish in one of the exhibits near the Ordovician sea. You can compare this animal to the Knightia specimens. Distinguishing fossil birds from reptiles of similar body form is often difficult. With Recent spec the advantages of examining soft tissues going to examine some characters that may be present in both birds and reptilian and/or dinosaurian relatives. ies we have and other features that are not preserved in fossils. Therefore, we are

Answer 1

Knightia fish:

It is an extinct genus of clupeid clupeiform bony fish habitat in fresh water. It is belongs to Eocene epoch and taxonomic family as herring and sardines

Anatomy features:

1. It has rows of dorsal side and ventral scutes from the back of the head to medial fins.

2. knightia fish contains heavy scales and small conical teeth their size is vary species to species

Note:

i. knightia eocaena was longest upto 25 centimeters

ii. knightia atla was shorter and average between 6 to 10 centimeters