Knightia is an extinct genus of clupeid bony fish that lived in the freshwater lakes and rivers of North America and Asia during the Eocene epoch. The genus was erected by David Starr Jordan in 1907, in honor of the late University of Wyoming professor Wilbur Clinton Knight, "an indefatigable student of the paleontology of the Rocky Mountains."

Knightia, (Knightia eocaena,) a prehistoric herring that left countless fossils in Wyoming, was named the state fossil. Prehistoric type of herring, closely related to today's Clupea herrings - lived 50 million years ago in a freshwater lake in what is now southwestern Wyoming.

2024年11月19日 · Both K. eocaena and K. alta are frequently discovered in mass mortality plates, some containing up to 100 fish per square meter. This suggests that, like their modern relatives, the Knightia species were sensitive to environmental changes.

2017年3月17日 · Most fossils from the Eocene epoch are well out of the reach of ordinary consumers, but not so the small prehistoric fish Knightia, thousands of specimens of which have been discovered in Wyoming's Green River formation (in …

2024年1月17日 · 在美國進行開發大西部熱潮期間, 大批傳教士及探險家進入懷俄明州這片不毛之地, 於1840 年代發現了艾氏魚 (Knightia)化石, 並以懷俄明州第一位地質學家 Wilbur Clinton Knight 的名字來命名。 於1907 年 首次定義為 Knightia humilis， 後為定義化石於始新世的岩層所發現，原先的humilis就認為Knightia eoceaena。 艾氏魚 (Knightia)是一種淡水魚, 喜歡群游, 它的頭部較大, 有四個鰭, 攝食藻類、浮游生物及昆蟲為生; 它又被較大的魚及鱷魚等捕獵,組成了綠河組一串 …

Knightia eocaena is perhaps the most common complete vertebrate fossil in the world. It is Wyoming's state fossil. National Park Service photo. Enlarge image.

Knightia is an extinct genus of freshwater herring found in the Green River Formation of Wyoming, USA. They are well known across the world due to the extreme abundance of their fossils. Knightia existed 50-40 million years ago during the Eocene epoch. Hundreds of these fish can be found in a square yard of fossiliferous rock.

2024年9月4日 · This study of Knightia eocaena (sensu Jordan 1907; Grande 1982) employed optical thin section petrography and field emission scanning electron microscopy (FESEM) with energy dispersive spectroscopy (EDS) analysis. These techniques document the presence of preserved bacteriomorph microfossils and bacteria metabolic byproducts.

Knightia is an extinct genus of freshwater fish that lived in the lakes and rivers of North America and Asia during the Eocene epoch. It was discovered by David Starr Jordan in 1907. Knightia is Wyoming 's state fossil, belonging to the same taxonomic family as herring and sardines.

Knightia is known only from deposits of probable freshwater origin. A new clupeid genus, pGosiutichthys, is described from early Middle Eocene deposits of the Green River Formation in Wyoming. Gosiutichthys parvus, new species, is a small herring that, unlike iKnightia (the other Green River clupeid), has two supramaxillary bones, thin ...