Lochkovian Age

What happened during this time?

• Bryophytes such as Sporogonites are on the landscape

• Eophytes and horneophytes, which both probably appeared in the Silurian, populate water edges

  • Eophytes are only known from Lochkovian sediments of the Welsh Borderland, but may represent the final days for this group which probably appeared in the Ordovician Period based upon cryptospores

• Early tracheophytes, such as rhyniophytes and cooksonoids continue to inhabit wet areas

  • Rhyniophytes: Aberlemnia, Cooksonia, Eocooksonia (=Cooksonella), Culullitheca, Fusitheca (=Fusiformitheca), Grisellatheca, Pertonella, Resilitheca, Salopella, Sporathylacium, Tarrantia, Tortilicaulis, Uskiella

• Ancestral lycophytes, continue to diversify

  • Zosterophyllopsida: Deheubarthia, Gosslingia, Hicklingia, Jugumella, Sawdoniales, Thrinkophyton, Xitunia, Zosterophyllum

  • Lycopods such as Drepanophycales diversify

  • Barinophytes like Protobarinophyton

  • Early Devonian lycophyte from Cottonwood Canyon (WY) shows evidence for a rooting system preserved in growth position (Matsunaga and Tomescu 2016)

• Ancestral trimerophytes, such as Psilophyton, also appear on the land.

• Other unclassified plants include: Balchaschella, Bowerophylloides, Hostinella, Isidrophyton, Juliphyton, Mointina, Pseudosajania, Psilophytites, Salairia, Stolophyton, Taeniocrada, Tastaephyton, Uksunaiphyton