parastyle
parastyle
[′par·ə‚stīl] (vertebrate zoology)
A small cusp anterior to the paracone of an upper molar.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive
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Paracone bears a quite low parastyle. An anterior cavity is crescent shaped and shallow, found between protocone and paracone.
PT was defined as 'parastyle' when it is located on upper molars and as 'protostylid' when it is located on lower molars (Dahlberg, 1945; Dahlberg, 1950).
P4 with distinct protocone, and an incipient to well-developed parastyle. Mandible much elongated with diastemata between the premolars.
The preprotocrista runs from the protocone to the parastyle, forming a wide shelf anterior to the paracone and preparacrista.
Occlusal surface of molars complex with labial and lingual styles; well-developed parastyle and mesostyle, and protostyle and enterostyle (Fig.
Diagnosis.--Differs from all other Heptacodon (where known) in its smaller size and in having a moderately-developed mesiobuccal cingulum on the upper molar parastyle and relatively greater buccal projection of parastyle.
The parastyle, mesostyle and metastyles are present labially.
The paracone rib lies close to the parastyle. A strong entostyle is present in the upper molars (Fig.
The parastyle is connected to the anteroloph, and separated from the protoloph by a wide and deep valley.
The preprotocrista is continuous with a precingulum extending to the parastyle. The lingual cingulum is interrupted on the talon and at the base of the protocone.
The parastyle is heavy, the mesostyle is high and the metastyle is incipient.
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