Gonyaulax spinifera

G. spinifera cells are slightly longer than broad. The epictheca has convex sides and a small epical horn. The hypotheca has a 2-4 antapical spines. The sulcus extends almoust the whole length of the cell. The cingulum is deeply excavated and displaced by 2 or more widths. G. spinifera is sometimes confused with Gonyaulax digitale.

Faust, M. A. 2391-2001, SEM: 64.3 x 48.24 µm; Stub No. 284; NMNH microscope PHILIPS XL30 ESEM W. Cells > 20um size

Faust, M. A. 2525-2002, SEM: 55.59 x 41.7 µm; Stub No. 290; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Belize, May 2002

Faust, M. A. 2920 B-2006, SEM: 83.9 x 62.94 µm; Stub No. 368; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Inside, Red tide,5/3/06 AM

Faust, M. A. 2920 B-2006, SEM: 82.95 x 62.22 µm; Stub No. 368; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Inside, Red tide,5/3/06 AM

Faust, M. A. 2920 B-2006, SEM: 79.74 x 59.82 µm; Stub No. 368; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Inside, Red tide,5/3/06 AM

Faust, M. A. 2918 B-2006, SEM: 106.51 x 79.9 µm; Stub No. 369; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, outside, red-tide, Belize 5/3/2006

Faust, M. A. 2525-2002, SEM: 67.91 x 50.95 µm; Stub No. 290; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Belize, May 2002

Faust, M. A. s.n., SEM: 63.93 x 47.95 µm; Stub No. 294; NMNH microscope PHILIPS XL30 ESEM W. Gulf Stream, North Carolina, 2002

Faust, M. A. 2920 B-2006, SEM: 118.73 x 89.07 µm; Stub No. 368; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Inside, Red tide,5/3/06 AM

Faust, M. A. 2523-2002, SEM: 40645.57 x 30491.8 nm; Stub No. 289; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Belize, May 2002

Faust, M. A. 2526-2002, SEM: 11246.82 x 8437.22 nm; Stub No. 291; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Belize, May 2002

Faust, M. A. 2523-2002, SEM: 60.62 x 45.47 µm; Stub No. 289; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Belize, May 2002

Faust, M. A. 2920 B-2006, SEM: 41475.47 x 31114.38 nm; Stub No. 368; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Inside, Red tide,5/3/06 AM

Faust, M. A. 2544-2002, SEM: 35337.41 x 26509.69 nm; Stub No. 293; NMNH microscope PHILIPS XL30 ESEM W. Manatee Cay, Belize, 2002

Faust, M. A. 2922 B-2006, SEM: 56.41 x 42.32 µm; Stub No. 377; NMNH microscope PHILIPS XL30 ESEM LaB6. The Gulf Stream, Fl, vertical net tow, sample collected 7/10/2006; sample # 2922, 2926, 2932

Faust, M. A. 2920 B-2006, SEM: 103.27 x 77.47 µm; Stub No. 368; NMNH microscope PHILIPS XL30 ESEM LaB6. Douglas Cay, Inside, Red tide,5/3/06 AM