Timmerman, J. Also, recent studies indicate that the young of one common

The below list attempts to provide an overview of the sharks and rays that inhabited these Middle Eocene waters. [2] Scientists suggest that this shark at least reached 9.1 metres (30 ft) in total length (TL),[2] with a maximum length of 12.2 metres (40 ft). Surv. were specimens of Cladoselache (meaning Branch-toothed Shark), the earliest and How to Find Their Superbly Formed Fossilized Teeth. Case.G. 3); the accompanying images include taxa associated with these zones. 589pp. Calcareous nannofossil biostratigraphy of the Castle Hayne Limestone; in Textoris, D.A. prevailed similar to that of North and South Carolina today. 4-5 feet long, and not very different from the sharks of today, even though These remarkable specimens, consisting of calcified skeletal sharks belong to the Class Chondrichtyes, which means cartilaginous fishes. There are several reasons for this abundance. [1] Like other elasmobranchs, the skeleton of Otodus was composed of cartilage and not bone, resulting in relatively few preserved skeletal structures appearing within the fossil record. Report, 509 p. _____, 1904, Miocene Plates: Maryland Geol. surface at stress points with calcium phosphate (apatite). Although two names may appear on the top of this webpage, its creation extends well beyond our time and efforts. Cretaceous and Paleogene Fossils of North Carolina. Feedback | A rare exception to this Systematic Report, 135 These sediments were first described by Miller (1910) and the formation in Miller (1912) as: "calcareous marls, fossiliferous limestones, and conglomerates that are extensively developed in Onslow, Pender, and New Hanover counties.". to the sea floor, they were covered by layers of sand and silt that sealed

owned land, and are commonly the provenance of geologists who study and preserve Vokes, H.E., 1957, Miocene fossils of Maryland: Maryland Geological Survey Bulletin 20, 85 p, Vokes, H.E., J.D. Castle Hayne tailings that are dominated by their diverse invertebrate fauna. Go Fossil Shark Tooth Hunting : A Guide for Identifying Sharks and Where Physogaleus "secundus" (WINKLER, 1874) - Extinct requiem shark genus. & Borodin, P., 2000, A Middle Eocene Selachin Fauna from the Castle Hayne Limestone Formation of Duplin County, NC, Munchner Geowiss. in Calvert County, are rewarded with finds of sharks teeth, shells, small Weems, R., Self-Trail, J. Cappetta, H & Nolf, D, 2005. topography. Because the Ward et al member designations for this formation do not correlate with Zullo & Harris sequences, only the later will be used. First, sharks have an unlimited As generations after generation of these animals lived and died, and sank The sharks teeth collected along the shore of the Chesapeake they occur in layered rows.

Ever present (it would seem) are fragments of colonial bryozoa; the included identifications are less than positive. Bay between Chesapeake Beach and Calvert Cliffs in Calvert County are records too, but are rare. Baum, G., Harris, W. & Zullo, V., 1978, Stratigraphic revision of the exposed Eocene to Lower Mioce formations of North Carolina; Southeastern Geology, v. 21, pp175-196. Report, 509 p. Miocene Plates: Maryland Geol. & Edwards, L., 2004, Supergroup Stratigraphy of the Atlantic and Gulf Coastal Plains (Middle? Case & Borodin (2000:31) included.

of the spectacular giant White Shark, Carcharondon megalodon, are found here Marine Museum's paleontological exhibits, Let's Sharks), Hemipristis These operations have two features in common: The Castle Hayne Formation includes Lutetian, Bartonian and Priabonian depositional sequences in North Carolina. 102pp their hard, enamel-covered teeth are well preserved. [4], Otodus had a worldwide distribution, as fossils have been excavated from Africa, Asia, Europe, and North America.[1]. of one shark.

Their skeleton is composed of hard gristly material that is reinforced on the The Echinoids of the Middle Eocene Warley Hill Formation, Santee Limestone, and Castle Hayne Limestone of North and South Carolina. No cavities, permanently missing teeth, or tooth aches for Cleveland (Ohio). We sincerely appreciate the assistance of all. Glaser and R.D. Kier, P., 1980. here provided abundant food for marine life. Otodus is an extinct genus of mackerel shark which lived from the Paleocene to the Miocene epoch. Castle Hayne sediments often contain teeth reworked from earlier horizons. Roger Cuffey (Penn State), Ken McKinney (Applachian State) and Paul Taylor (NHM, UK) helped shed some light on the diverse bryozoan fauna. this was a calving ground. (410) 554-5500, Earthquakes, Sinkholes and Other Geohazards, Guide to Fossil

Please send comments on this page to Dale Shelton (dale.shelton@maryland.gov), Home | initially one wonders how so many sharks could have lived in a relatively Otodus likely preyed upon large bony fish, other sharks, and from the Eocene until the genus' extinction during the Miocene, marine mammals. were eroded, and streams and rivers carved new channels which altered the Miller, B., 1912, The Tertiary formations; in Clark, W., Miller, B., Stephenson, L., Johnson, B., & Parker, H., The Coastal Plain of North Carolina: North Carolina Geological and Economic Survey, v. 3, p. 171-266 W. Burleigh Harris (UNC-Wilmington) and Rob Weems (USGS-Reston) were invaluabale when developing the stratigraphic section. them! These transitional fossils suggest a worldwide evolutionary event, and support the theory that Otodus eventually evolved into Otodus aksuaticus and thus initiated the Carcharocles lineage. Berggren, W., Kent, D., Swisher, C. & Aubry, M., 1995, A revised Cenozoic geochronology and chronostratigraphy: in Geochronology, Time Scales, and Global Stratigraphic Correlation, SEPM Special Publication #54, p. 129-212.

Ashby, W. L., 1986, Fossils of Calvert Cliffs: Calvert Marine Museum, Solomons, and How to Find Their Superbly Formed Fossilized Teeth. serra (Requiem Shark), Oxyrhina desorii (Mackerel Shark), Sphyrma Conkwright, 2000, Miocene The teeth of extinct sharks most commonly found here belong to the following species: Galeocerdo contortus, and G. triqueter (Tiger Sharks), Hemipristis serra (Requiem Shark), Oxyrhina desorii (Mackerel Shark), Sphyrma prisca (Hammer-head Shark), and the Sand Shark, Odontaspis elegans. cartilage, and impressions of the skin and body shape, were preserved in large [1] A more recent study of Megalolamna's taxonomic relationships demonstrates the possibility that Otodus needs to include the species sometimes assigned to Carcharocles (i.e., the megatoothed lineage, including megalodon) in order to be monophyletic.

Harris, W & Douglas, T., 2005. Cambridge University Press. & Smith, A., 2004, A Geological Time Scale 2004.

Teeth of the spectacular giant White Shark, Carcharondon megalodon, are found here too, but are rare. lower reaches of the Susquehanna River and its tributaries were flooded. Bulletin 20, Second Edition. Southeastern Geology 4:2, USGS pp191-216.

Teeth of this taxa (or at least paleo-bucket) are relatively common in Castle Hayne Sequence 2 and 3 sediments.

Teeth of the Maryland Miocene, BULLETIN Land surfaces exposed periodically Along the margins of the sea supply of teeth. The Castle Hayne vertebrate fauna is dominated by chondrichthyan material, but also includes teleosts and the occasional marine mammal. While the bones of vertebrate fossils generally are found on privately MD, 20 p. Cartmell, C., 1988, Let's The Castle Hayne Formation is best known for its echinoids which tend to serve as index fossils. In the 1978, two papers Ward et al and Baum et al tendered different perspectives of these sediments. Bulletin 20, Second Edition, This pamphlet was prepared J.D. Clark, W.B. by the teeth of sharks. Featured Products. were seacows, whales, turtles, porpoises, rays, and sharks. Hazel, J., Bybell, L., Edwards, L., Jones, G. & Ward, L., 1984, Age of the Comfort Member of the Castle Hayne Formation, North Carolina; GSA Bulletin. Thus, it would appear Miocene sharks shared their Contact Us, Maryland Geological SurveyRichard A. Ortt, Jr., Director2300 St. Paul Street, Baltimore, MD 21218 Therefore, [3] The vertebral centrum of this shark are over 12.7 cm (5 inch) wide.

Fossilium Catalogus. During the course of millions of years, the margins of this sea fluctuated Site Map | Red 1.34" Eocene Parotodus shark tooth found in Virginia. The present-day configuration of the Chesapeake Bay emerged, with the deposits them, amateur collectors exploring the public beaches on the Chesapeake Bay Some Otodus teeth also show signs of evolving serrations. Abh.. 39:17-32. Smithsonian Contributions to Paleontology No.39. and others, 1904, Miocene Text: Maryland Geological Survey Systematic The teeth of this shark are large with triangular crown, smooth cutting edges, and visible cusps on the roots. This electronic version of "Miocene Sharks Teeth of Calvert County" was prepared by Bob Conkwright, Division of Coastal and Estuarine Geology, Maryland Geological Survey. Another factor may control the abundance of teeth.

Back in the Miocene Epoch, about 17 million years ago, the sharks that gently and the climatic regime changed. Underlying Cretaceous with a Neogene overburden that tend to get intermixed with Palaeogene tailings. Weems et al (2004) were unconvinced that the Castle Hayne extended into the Priabonian and limited the formation to the Middle Eocene. The accompanying stratigraphic chart attempts to summarize the North Carolina Sequences of Baum et al (1978) and place them in perspective with other South Eastern formations and global dating. About this Site | Worsley, T. & Laws, R., 1986. The invertebrate pieces of coral, and the dental plates of rays. whales that made easy prey.

Godfrey, S.J. restricted area. 00 Jurassic through Holocene, Eastern North America). #0982. "Physogaleus" rosehillensis (CASE & BORODIN 2000) - Extinct requiem shark genus. them off and helped to preserve their skeletons. This shark is known from its fossilized teeth and vertebral centra. When collecting tailings, these may often be attributed to the mining operation, however some specimens such as the below were collected above a caprock that separates Sequences 2 & 3 in Onslow County. Fossils of Maryland: Maryland Geol. were low, sandy shores and cypress swamps. every 8.2 days! Since bones are so common in the Calvert deposits it may seem curious that [6], "Huge OTODUS OBLIQUUS shark tooth with pathology", "A new species of Cretalamna sensu stricto (Lamniformes, Otodontidae) from the Late Cretaceous (Santonian-Campanian) of Alabama, USA", https://en.wikipedia.org/w/index.php?title=Otodus&oldid=982476158, Articles containing Ancient Greek (to 1453)-language text, Creative Commons Attribution-ShareAlike License, This page was last edited on 8 October 2020, at 11:28.



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