author={David J. Cicimurri},
  booktitle={Journal of Paleontology},
  • D. Cicimurri
  • Published in Journal of Paleontology 1 May 2007
  • Biology
Sawfishes of the family Pristidae comprise a group of rays having dorsoventrally flattened, sharklike bodies and elongated rostra bearing a row of teeth on each side. Some species may attain total body lengths (TL) of 7 m or more (Compagno and Last, 1999). Unlike the similarly-shaped sawsharks of the family Pristiophoridae, the number of rostral teeth and their proportions are established in utero and maintained into adulthood (Slaughter and Springer, 1968; Miller, 1974), and if a tooth is lost… 
Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichthyes and Osteichthyes) of the lower-to-middle Eocene (Ypresian to Bartonian) Claiborne Group in Alabama, USA, including an analysis of otoliths
The Tallahatta Formation, Lisbon Formation, and Gosport Sand are the three lithostratigraphic units that make up the lower-to-middle Eocene Claiborne Group. In Alabama, these marine units are among
A rhinopristiform sawfish (genus Pristis) from the middle Eocene (Lutetian) of southern Peru and its regional implications
Modern sawfishes (Rhinopristiformes: Pristidae) are circumglobally distributed in warm waters and are common in proximal marine and even freshwater habitats. The fossil record of modern pristid
The biology of extinct and extant sawfish (Batoidea: Sclerorhynchidae and Pristidae)
Close examination of the morphology of pectoral fin basals and the internal structure of the rostrum reveals that sclerorhynchids and pristids evolved independently from rhinobatids, whereas pristiophorids are squalomorph sharks.
Priabonian Sharks and Rays (Late Eocene: Neoselachii) From Minqar Tabaghbagh In The Western Qattara Depression, Egypt
A Priabonian (late Eocene) neoselachian fauna of sharks and rays is known from marine strata in the foothills of Minqar Tabaghbagh, near the southwestern corner of the Qattara Depression in the
Sawfishes and Other Elasmobranch Assemblages from the Mio-Pliocene of the South Caribbean (Urumaco Sequence, Northwestern Venezuela)
It is hypothesize that the fossil chondrichthyan assemblages from the Urumaco sequence are evidence for marine shallow waters and estuarine habitats, using the habitat preference of the living representatives.
First record of the extinct sawfish Propristis schweinfurthi Dames, 1883 (Batoidea: Pristiformes: Pristidae) from the middle Eocene of Spain
In spite of some evidence to the contrary, Propristis probably preferred ecological conditions similar to extant sawfishes, i.e., inhabiting nearshore tropical to subtropical seas with occasional excursions into freshwater.
Taxonomy and morphological study on the vertebrate remains of Shark and rays fauna from the Middle and Late Eocene succession, Fayoum Depression, Egypt
Well preserved vertebrate remains of Shark and ray fauna from the Middle and Late Eocene succession of Fayoum depression, at Gebal Qasr El-Sagha area have been documented and studied in details. Four
Diversity and renewal of tropical elasmobranchs around the Middle Eocene Climatic Optimum (MECO) in North Africa: New data from the lagoonal deposits of Djebel el Kébar, Central Tunisia
Bulk sampling of an indurated glauconic sandstone horizon from Djebel el Kebar, Central Tunisia, yielded a moderately diversified assemblage of elasmobranchs (sharks and rays), dating from the late
A middle - late Eocene neoselachian assemblage from nearshore marine deposits, Mahajanga Basin, northwestern Madagascar
This fauna represents the first Cenozoic neoselachian fossil record from the Eocene of Madagascar and broadens the understanding of their evolutionary and biogeographic history in the southern hemisphere during this time.


Observations on the Developing Rostrum and Rostral Teeth of Sawfish: Pristis perotteti and P. cuspidatus
History of fish populations inferred from fish scales in anaerobic sediments off California and a review of the monotypic deep-sea anglerfish family Centrophrynidae: tax, distribution and osteology.
Sexual Dimorphism in Number of Rostral Teeth of the Sawfish, Pristis perotteti Müller and Henle, 1841
Rostral tooth counts were made of 211 sawfish from the Lake Nicaragua-Rio San Juan System and on the basis of only three males and three females, P. pectinatus does not appear to exhibit the same dimorphism.
A New Protocetid Whale (Cetacea: Archaeoceti) from the Late Middle Eocene of South Carolina
A new genus and species of protocetid cetacean is described from a partial skull, the posterior portion of both dentaries, 13 vertebrae, and elements of 15 ribs found in the Cross Member of the late middle Eocene Tupelo Bay Formation in Berkeley County, South Carolina.
The systematic position of the Cretaceous sclerorhynchid sawfishes (Elasmobranchii, Pristiorajea)
A hypertrophied roStral cartilage with lateral rostral spines was developed independently within several closely related clades according to the present hypotheses, and a new order, †Sclerorhynchiformes, is introduced.
Replacement of Rostral Teeth in Sawfishes and Sawsharks
The pattern of varying length of rostral teeth in adults of recent sawsharks (Selachii), which is explained by the appearance of both new and replacement teeth at intervals during growth, offers a possible explanation for the presence of roStral teeth of various lengths in the Cretaceous ganopristid sawfish Onchopristis numidus (Batoidei).
Schizorhiza: a unique sawfish paradigm from the Difunta Group, Coahuila, Mexico
The sclerorhynchid sawfish Schizorhiza is widespread in Upper Cretaceous marine strata of the Difunta Group of Coahuila, Mexico ranging from the latest Campanian to latest Maastrichtian. A
Lower vertebrates from the late Eocene Crow Creek local fauna, St. Francis County, Arkansas
ABSTRACT A diverse late Eocene fauna of lower vertebrates is described based on collections made at the Crow Creek Quarry, St. Francis County, Arkansas. Many of the taxa are reported from the late
Dentine structure in the rostral teeth of the sawfish Pristis (Elasmobranchii).
A revised Cenozoic geochronology and chronostratigraphy
Since the publication of our previous time scale (Berggren and others, 1985c = BKFV85) a large amount of new magneto- and biostratigraphic data and radioisotopic ages have become available. An
A Manual of the Anatomy of Invertebrated Animals
The work is one which, in proportion to its size, furnishes the student with the most compact account of the present aspect of the science of comparative anatomy in the English language.