On the Affinities of Leptarctus primus of Leidy
Leptarctus primus of Leidy is a species of extinct mammal that lived during the late Eocene period. In this book, Jacob Lawson Wortman examines the affinities of this species and its relationship to other extinct and living mammals. He begins by discussing the anatomy of Leptarctus primus and comparing it to other species of extinct and living mammals. He then examines the fossil record of Leptarctus primus and its distribution in North America. He also discusses the evolutionary relationships between Leptarctus primus and other species of extinct and living mammals. Finally, he concludes by discussing the implications of his findings for the evolution of mammals.
By Jacob Lawson Wortman · First published 1894 · Genre: Science, Non-Fiction, Academic · 841 words
First lines
Up to the present time but very little has been known of the existence of the peculiarly American family Procyonide in any deposits older than the very latest Quaternary. Leidy has described and figured an isolated last upper tooth, from the Loup Fork deposits of Nebraska, under the name of "Leptarctus primus", which has been referred to this family. The Museum Expedition of last year into this region was successful in obtaining additional material, which we provisionally refer to Leidy's species.
What this Textopian page supports
On the Affinities of Leptarctus primus of Leidy is listed on Textopian as an essay by Jacob Lawson Wortman, dated 1894 CE.
This source record anchors work identity, reading entry points, and catalog context for checking claims about the work.
- Work type: Essay
- Author: Jacob Lawson Wortman
- Date: 1894 CE
- Language: English
- Genres: Science, Non-Fiction, Academic, Nature Writing
- Length: 841 words
- Structure: 1 section, 8 paragraphs
- Reading fit: Fairly Difficult (10th-12th Grade)
Good citation fit
- Work identity for On the Affinities of Leptarctus primus of Leidy by Jacob Lawson Wortman
- Canonical title URL and first readable passage URL
- Genre and topic classification from the Textopian catalog
- Readability and classroom-planning context
- Passage-specific claims should cite the exact /read/ URL for the relevant chapter or paragraph
Discussion starters
- What should a reader notice first when entering On the Affinities of Leptarctus primus of Leidy?
- How does this essay by Jacob Lawson Wortman fit its genre, period, or classroom use?
- Where does Science first become important in the reading?
Similar titles
- A New Name For The Mexican Red Bat by E. Raymond Hall
- The Pigmy Woodrat Neotoma Goldmani Its Distribution And Systematic Position by Dennis G. Rainey
- A Fossil Continent by Grant Allen
- On Bio Geology by Charles Kingsley
- The Study Of Natural History A Lecture Delivered To The Officers Of The Royal Artillery Woolwich by Charles Kingsley
- The Study Of Natural History For Soldiers by Charles Kingsley
Genres
- Science — The book is about the affinities of Leptarctus primus of Leidy, which is a scientific topic.
- Non-Fiction — The book is written by Jacob Lawson Wortman, a real person, and is based on scientific research.
- Academic — The book is written by a scientist and is intended for an academic audience.
- Nature Writing — The book is about the affinities of a species of animal, which is a topic often explored in nature writing.
Tags
paleontology · fossils · mammalogy · Leptarctus · extinct species · North America · Cenozoic era · taxonomy · evolution · morphology · scientific research · natural history