Longfin Mako

Taxonomy

Longfin Mako

Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Lamniformes
Family: Lamnidae
Genus: Isurus
Species: Isurus retroflexus
Author Citation Agassiz, 1843

Geological Time Scale

Eon: Phanerozoic
Era: Cenozoic
Period: Neogene
Sub Period: None
Epoch: Pliocene

Stratigraphy

Goose Creek Limestone Formation

Provenance

Collector: Erin Osborne
Date Collected: 04/12/2024
Acquired by: Field Collection

Dimensions

Length: 35 mm
Width: 28 mm
Height: 39 mm
Thickness: 8 mm

Location

Berkeley County
South Carolina
United States

• isurus retroflexus
• shark
• south carolina
• summerville
• tooth

Comments

The Goose Creek Limestone (formation) is early-mid Pliocene and contains un-reworked Miocene-Pliocene fossils.  The Isurus retroflexus that I have found in the Summerville area have a variety of cusplet sizes and shapes - from multiple small "nubs" like those found on this tooth, to larger crenulated cusplets. 

 

ID references:

1. Gale, B. (2020). A Beachcomber's Guide to Fossils.  The University of Georgia Press.

2. Kocsis, L. (2007). Central paratethyan shark fauna (Ipolytarnóc, Hungary). GEOLOGICA CARPATHICA-BRATISLAVA-, 58(1), 27

3. Maisch IV, H., Becker, M., & Chamberlain Jr, J. (2015). Chondrichthyans from a lag deposit between the Shark River Formation (Middle Eocene) and Kirkwood Formation (Early Miocene), Monmouth County, New Jersey.  Paludicola, 10, 149-183.

 

Stratigraphy information references:

1. Boessenecker, R. (2008, May 13). The Ashley Phosphate Beds: the Reconstruction Era, Vertebrate Paleontology, Fossil Preservation, and Stratigraphic Confusion in Charleston, South Carolina. The Coastal Paleontologist. https://coastalpaleo.blogspot.com/2018/05/the-ashley-phosphate-beds.html.

2. Campbell, M. R., & Campbell, L. D. (1995). Preliminary biostratigraphy and molluscan fauna of the Goose Creek Limestone of eastern South Carolina. Tulane Studies in Geology and Paleontology, 27(1-4).