What Are Horsetails Closely Related To?

Our maximum-likelihood analysis shows unambiguously that horsetails and ferns together are the closest relatives to seed plants. What are horsetails related to? Horsetail is derived from huge, tree-like plants that thrived 400 million years ago during the Paleozoic era. A close relative of the fern, horsetail is a nonflowering weed Read more…

Do Horses Have A Coccyx?

The horse has 5 sacral vertebrae and approximately 20 coccygeal vertebrae (8). In adults, the sacral vertebrae are fused, and in some cases, there may be fusion between the fifth sacral and first coccygeal vertebrae (9). What animals have a coccyx? The coccyx (PL: coccyges or coccyxes), commonly referred to Read more…

How Many Lumbar Do Horses Have?

6 lumbar vertebrae. The domestic horse, Shetland pony, zebras, Arabian horses and hybrids normally have 6 lumbar vertebrae, the donkeys and hemiones have 5 but exceptions were found in all classes. What does lumbar vertebrae do for a horse? Spiny processes in the lumbar vertebrae face forward towards the head, Read more…