Bulletins of American paleontology . cm high). 4. Mediargo mediocris (Dall) 504 LSJU 138. Pliocene, Santa Maria District, California. Aper-turai view of late juvenile specimen; ( cm high). [Para-type of Gyrincum Icivisii Carson.] 5. Mediargo mediocris (Dall) 504 USNM 153900. Pliocene, Coos Bay, Oregon. Specimen turned45 from abapertural view; ( cm high). [Holotype ofGyrhiciim mediocre Dal!.] 6. Mediargo mediocris (Dall) 504 USNM 645876. Pliocene (possibly reworked Miocene) fromCoos Bay, Oregon. Aperturai view; (6 cm high). [Paratypeof Gyrineum mediocre Dall.] 8. Mediargo mediocris (Dall)
Bulletins of American paleontology . cm high). 4. Mediargo mediocris (Dall) 504 LSJU 138. Pliocene, Santa Maria District, California. Aper-turai view of late juvenile specimen; ( cm high). [Para-type of Gyrincum Icivisii Carson.] 5. Mediargo mediocris (Dall) 504 USNM 153900. Pliocene, Coos Bay, Oregon. Specimen turned45 from abapertural view; ( cm high). [Holotype ofGyrhiciim mediocre Dal!.] 6. Mediargo mediocris (Dall) 504 USNM 645876. Pliocene (possibly reworked Miocene) fromCoos Bay, Oregon. Aperturai view; (6 cm high). [Paratypeof Gyrineum mediocre Dall.] 8. Mediargo mediocris (Dall) 504 LSJU 114. Pliocene, Santa Maria District, California. Aper-turai view of adult specimen having incised spiral grooves;( cm high). [Holotvpe of Gyrineum Icivisii Carson.] 9. 9. Mediargo mediocris (Dall) 504 LSJU 9983 (formerly LSJU 31625). Pliocene, Kettleman Hills,California. Aperturai view of adult specimen having axialsculpture on the early whorls; ( cm high). Cf. fig. 8. Bull. Amer. Paleont., Vol. 56 Plate 47. Bull. Amer. Paleont., Vol. 56 Plate 48
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