Crawford Mastodon (Pleistocene of the United States)

Also known as Abraham Halm Estate; East of Bucyrus

Where: Crawford County, Ohio (40.8° N, 83.0° W: paleocoordinates 40.8° N, 83.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Late/Upper Pleistocene (0.1 - 0.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; marl

• "The soil in which the bones were buried is entirely alluvial" but the local environment is clearly lacustrine
• "fresh-water-shell marl, about four feet thick... composed of argillaceous matter and fresh-water shells... covered by a layer of peat four feet thick" and "deposited in a stratum of yellowish clay, which forms the surface of the country"

Size class: macrofossils

Collected in 1838

Collection methods: salvage, quarrying

• specimens were found "in diggina mill-race" and were bought by the American Philosophical Society from Mr. D. Wood

Primary reference: W. E. Horner and I. Hays. 1843. Description of an entire Head and various other Bones of the Mastodon. Transactions of the American Philosophical Society 8:37-48 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 101394: authorized by John Alroy, entered by John Alroy on 21.12.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Heterostropha - Lymnaeidae
Lymnaea sp.
Lymnaea sp. Lamarck 1799 snail
 Heterostropha - Physidae
Physa sp.
Physa sp. Draparnaud 1801 snail
 Heterostropha - Planorbidae
Planorbis sp.
Planorbis sp. Muller 1774 snail
Bivalvia
 Lucinida - Lucinidae
"Cyclas sp." = Lucina (Cyclas)
"Cyclas sp." = Lucina (Cyclas) Klein 1853 clam
Mammalia
 Proboscidea - Mammutidae
Mammut americanum
Mammut americanum Kerr 1792 American mastodon
"mastodon"