Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Fundamentals of Invertebrate PalaeontologyConodonts

Fundamentals of Invertebrate Palaeontology: Conodonts [Conodonts (=coneCones-tooth in Greek) are usually microscopic (0.2–2 mm in length) organisms, although, rare larger specimens up to 25 mm have been recorded (Gabbott et al. 1995; Purnell 1995). Conodonts are elongateElongate, armorless, eel-shaped, and large-eyed marine animals (Briggs et al. 1983; Purnell 1995) (Fig. 1). They are soft-bodied, except for their apparatus of tooth-likeTooth phosphatic (bioapatite with a francolite-like structure) elementsElements situated in the mouth and/or the pharynx (Fig. 2(1)).Fig. 1Line drawing of the Early Carboniferous (Dinantian, Mississippian) Clydagnathus cf. cavusiformis Rhodes et al. (1969) from the Granton Shrimp Bed (Edinburgh, Scotland).Modified from Briggs et al. (1983)Fig. 2The conodont animal. 1: Line drawing of the conodont animal showing its major morphological features. 2: A natural assemblage of conodont elementsElements of Scottognathus typicus (Rhodes) from Pennsylvanian rocks in Illinois (Scottognathus is a junior synonym of Idiognathodus) (after Sweet and Donoghue 2001). 3: The postero-ventral view of the head of the conodont animal showing the position of elementsElements (apparatus) of the Lochkovian (earliest Devonian) Pandorinellina rernscheidensis (Ziegler) (modified after Dzik 1991). 4: Illustration of conodont’s M, S and P elementsElements in relationship to one another within the animal’s exposed oralOralcavityCavity. 5: Enlarged view of the two sets of P elementsElements (P1 and P2) (modified from Purnell and Jones 2012)] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

Fundamentals of Invertebrate PalaeontologyConodonts

Download PDF
22 pages

Loading next page...
 
/lp/springer-journals/fundamentals-of-invertebrate-palaeontology-conodonts-NJiyTVkcHA
Publisher
Springer India
Copyright
© Springer Nature India Private Limited 2020
ISBN
978-81-322-3960-4
Pages
93 –115
DOI
10.1007/978-81-322-3962-8_5
Publisher site
See Chapter on Publisher Site

Abstract

[Conodonts (=coneCones-tooth in Greek) are usually microscopic (0.2–2 mm in length) organisms, although, rare larger specimens up to 25 mm have been recorded (Gabbott et al. 1995; Purnell 1995). Conodonts are elongateElongate, armorless, eel-shaped, and large-eyed marine animals (Briggs et al. 1983; Purnell 1995) (Fig. 1). They are soft-bodied, except for their apparatus of tooth-likeTooth phosphatic (bioapatite with a francolite-like structure) elementsElements situated in the mouth and/or the pharynx (Fig. 2(1)).Fig. 1Line drawing of the Early Carboniferous (Dinantian, Mississippian) Clydagnathus cf. cavusiformis Rhodes et al. (1969) from the Granton Shrimp Bed (Edinburgh, Scotland).Modified from Briggs et al. (1983)Fig. 2The conodont animal. 1: Line drawing of the conodont animal showing its major morphological features. 2: A natural assemblage of conodont elementsElements of Scottognathus typicus (Rhodes) from Pennsylvanian rocks in Illinois (Scottognathus is a junior synonym of Idiognathodus) (after Sweet and Donoghue 2001). 3: The postero-ventral view of the head of the conodont animal showing the position of elementsElements (apparatus) of the Lochkovian (earliest Devonian) Pandorinellina rernscheidensis (Ziegler) (modified after Dzik 1991). 4: Illustration of conodont’s M, S and P elementsElements in relationship to one another within the animal’s exposed oralOralcavityCavity. 5: Enlarged view of the two sets of P elementsElements (P1 and P2) (modified from Purnell and Jones 2012)]

Published: Dec 13, 2019

There are no references for this article.